30 March 2022, Volume 53 Issue 3
    

  • Select all
    |
    Focuses & Concerns (The Project of Chongqing Press Fund in 2021)
  • Synthesisand characterization of large-diameter self-matting core-shell acrylic resin coating
    PENG Hao, WEI Huan, XIANG Jun, CHEN Yi, FAN Haojun
    Journal of Functional Materials. 2022, 53(3): 3001-3010. https://doi.org/10.3969/j.issn.1001-9731.2022.03.001
    Abstract ( ) Download PDF ( ) Knowledge map Save
    A core shell structure, large particle self-extinction acrylic resin emulsion is prepared by semi continuous feeding method through seed emulsion polymerization-three successive nucleation growth and shell polymer ization. The effects of different feeding methods on the particle size of seed latex particles and the method of continuous growth of core latex particles are investigated. Simultaneously, the influence of latex particle size, core-shell structure and crosslinking degree on the extinction of acrylic resin coating is also studied. The results show that the seed latex particles with large particle size can be obtained by semi-continuous feeding method. By controlling the concentration of emulsifier and monomer, the nucleation mechanism is oligomer nucleation, and the growth of latex particles is dominant in the reaction, so as to obtain the seed latex particles with large particle size (about 200 nm). After three times growth, the particle size of seed latex particles can reach about 700 nm. Finally, after shell-shell polymerization, the particle size of core-shell latex is increased to about 800 nm. Latex particle size has an important influence on the gloss of the coating. Large latex particle size will produce rough microstructure on the coating surface and reduce the gloss of the coating, while the soft core-hard shell structure makes it difficult for latex particles to deform and integrate during film formation, leading to improve the roughness and extinction of the coating. At the same time, the shell density is also an important factor affecting the gloss of coating. After the introduction of crosslinking agent, the density of shell structure increases and the degree of freedom of polymer chains decreases, which retards the latex particles deform and fuse. As a result, the roughness of the coating surface is further increased, and the gloss of the PVC leather coating can be adjusted to 1.2°.
  • Photocatalytic degradation of tetracycline hydrochloride by NaYF4:Yb,Tm@TiO2 composite catalyst
    RAO Han, MA Yongmei, LI Siyue
    Journal of Functional Materials. 2022, 53(3): 3011-3019. https://doi.org/10.3969/j.issn.1001-9731.2022.03.002
    Abstract ( ) Download PDF ( ) Knowledge map Save
    The extensive application and difficult degradation of antibiotics have caused great harm to the ecological environment. Effectively and economically removing antibiotic has become a hot topic and challenge. Here, NaYF4:Yb,Tm@TiO2, a multi-band active composite photocatalyst is prepared by hydrothermal method for high efficiency removal of tetracycline hydrochloride (TC), a representative antibiotics in water. The upconversion material in the composite catalyst can convert near-infrared (NIR) light to ultraviolet (UV) light, which is synergistically used for the efficient photocatalytic degradation of TC. The effects of photocatalyst dosage, initial concentration of TC and pH value on photocatalytic degradation efficiency are also studied. The results show that the degradation process of TC conforms to the pseudo-first-order kinetic equation. The optimal conditions of photocatalyst dosage, initial concentration of TC and pH value for TC photocatalytic degradation are 0.67 g/L, 10-5 mol/L and 6, respectively. The maximum reaction rate constant is 0.105. This study reveals that the composite photocatalyst modified by up-conversion material can effectively degrade environmental pollutants such as antibiotics by using multiband sunlight, which is beneficial to the water environment protection.
  • Research progress of oxide antiferromagnetic Cr2O3 thin film
    MA Xiumei
    Journal of Functional Materials. 2022, 53(3): 3020-3025. https://doi.org/10.3969/j.issn.1001-9731.2022.03.003
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Oxide antiferromagnetic Cr2O3 thin films have extensive applications in spintronic devices. The early basic research on antiferromagnetic Cr2O3, as well as the research progress of antiferromagnetic Cr2O3 thin film in exchange bias and magnetoelectric effect is reviewed in this article. Finally, part of the problems presented in the study of oxide antiferromagnetic Cr2O3 thin films are pointed out, and the future development are also prospected.
  • Preparation and properties of new hybrid nano film materials
    BAO Chen, GUO Chenyu, GUANG Shanyi, XU Hongyao
    Journal of Functional Materials. 2022, 53(3): 3026-3030. https://doi.org/10.3969/j.issn.1001-9731.2022.03.004
    Abstract ( ) Download PDF ( ) Knowledge map Save
    A colorless and transparent crosslinked polymer film with high elastic state is quickly prepared by polyethylene glycol 2000 diacrylate (PEGDA-2000) and N-vinyl-2-pyrrolidone (NVP) onto POSS-SH via click reaction using UV initiator. The polymer film has certain absorbability for some solvents, and its absorbability rate are calculated. Its thermal stability Td5% reaches 300 ℃. The polymer is a hydrophobic and oil-philic film with better stability and durability in neutral and acidic environments. The critical point of oil flux of the hydrophobic and oil-philic composite press cloth appears at 17 s, at which the average oil flux before the critical point of oil-water mixture is 15 651 L/(m2·h), and the separation efficiency reaches 96%.
  • Preparation and application of polyamide nanofiltration membrane modified by UiO-66-X
    LI Lu, DENG Huiyu, BANG Yu, CHEN Qingchun, JIN Tianxiang, NA Bing
    Journal of Functional Materials. 2022, 53(3): 3031-3038. https://doi.org/10.3969/j.issn.1001-9731.2022.03.005
    Abstract ( ) Download PDF ( ) Knowledge map Save
    In order to construct nanofiltration membrane with anti-“trade off” effect, polyamide nanofiltration membranes are modified by metal-organic framework UiO-66-NH2 and UiO-66-(COOH)2, respectively. The results indicate that the introduction of UiO-66-X can enhance the hydrophilicity and anti-protein adsorption performance of the membrane. Different from the expectation, compared with polyamide nanofiltration membrane without MOFs, the MgCl2 removal rate of the membrane with UiO-66-(COOH)2 can nearly remain stable when the content of UiO-66-(COOH)2 changes from 0.01 g to 0.03 g, but that of Na2SO4 decreases obviously. However, salts rejection rate of the polyamide nanofiltration membrane for MgCl2 and MgSO4 can both keep nearly stable by introduction of UiO-66-NH2 when the loading ranged from 0.01g to 0.04 g. Meanwhile, the flux improves with increasing the dosage of UiO-66-NH2. Moreover, the flux of the membrane with UiO-66-NH2 is higher than that of the membrane containing UiO-66-(COOH)2. When the dosage of UiO-66-NH2 is 0.03 g (NF-NH2-3), the removal rates of MgCl2 and MgSO4 are 83% and 95% respectively, and the flux is about 40.7 L/(m2·h), which is 2.6 times of the membrane without MOFs. When NF-NH2-3 is used to remove bisphenol A from water, the removal rate is about 93%. It shows potential applications in water softening and treatment of wastewater containing endocrine disrupting chemicals.
    • Review & Advance
  • Preparation and biomedical application of hydroxyapatite microspheres
    WANG Xuefeng, NIU Xiaolian, QIN Miao, WEI Yan, HAN Zhijun, HUANG Di
    Journal of Functional Materials. 2022, 53(3): 3039-3047. https://doi.org/10.3969/j.issn.1001-9731.2022.03.006
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Hydroxyapatite microspheres have been widely used in biomedical field because of their unique spherical structure, regular morphology, good fluidity, large specific surface area, good biocompatibility and biological activity. In this paper, different preparation methods of hydroxyapatite microspheres are summarized, such as template method, hydrothermal method, spray drying method, microemulsion method, precipitation method, and so on. The effects of different preparation methods on the morphology, size and crystallinity of hydroxyapatite microspheres are analyzed. The formation mechanism of hydroxyapatite microspheres under different methods is discussed. Finally, the application progress of hydroxyapatite microspheres in biomedical fields such as drug sustained release, bone tissue repair, environmental purification and biomolecule separation is introduced.
  • Progress in preparation and electrical properties of two dimensional materials MXene
    WANG Jie, HAO Wei, XU Shengyuan, XIE Kefeng, GAO Wensheng
    Journal of Functional Materials. 2022, 53(3): 3048-3057. https://doi.org/10.3969/j.issn.1001-9731.2022.03.007
    Abstract ( ) Download PDF ( ) Knowledge map Save
    The two-dimensional material MXene with layered structure has attracted the attention of most researchers due to its outstanding conductivity, good hydrophilicity and rich surface chemical structure. This paper focuses on the advanced preparation methods and processes of transition metal carbonitrides, and reviews the research progress of their electrical aspects (including supercapacitors, battery materials and electrocatalysis). In MXene supercapacitors, compared with conventional aqueous electrolytes, organic electrolytes or ionic electrolytes can often provide higher output voltage, resulting in higher energy density. At the same time, the chemical properties of solvents also have a great influence on the molecular/ionic arrangement in MXene. As far as mxene based battery materials are concerned, the layered structure prepared by changing the assembly method of mxene sheet and electrode manufacturing method can prevent aggregation and reaccumulation, and the introduction of cation vacancy can also effectively improve the performance of MXene based battery materials. In addition, several strategies to improve the performance of MXene based materials for electrocatalytic water decomposition are discussed. The purpose of this paper is to review the preparation, structure, application and optimization of MXene in electricity, and to discuss the future research direction and possible challenges.
  • The application progress of two-dimensional MXene materials in the field of gas sensor
    YIN Youyou, LIU Chenhui, WANG Fang, YANG Li, HAN Aitong, GAO Jiyun
    Journal of Functional Materials. 2022, 53(3): 3058-3065. https://doi.org/10.3969/j.issn.1001-9731.2022.03.008
    Abstract ( ) Download PDF ( ) Knowledge map Save
    MXene materials are inorganic compounds composed of pre-transition metal carbon and nitride. Two-dimensional MXene and its composites have graphene-like lamellar structure, high specific surface area, excellent electrical conductivity and abundant surface active sites, which have become a research hotspot in the field of materials in recent years. This paper focuses on the application prospects of two-dimensional MXene materials in the field of gas sensors, and reviews from the perspectives of MXene and gas sensitivity. It focuses on the preparation methods and sensor performance of MXene and its (inorganic/organic) composite materials as gas-sensitive materials. The opportunities and challenges in material design strategy and sensitivity mechanism of two-dimensional MXene in gas sensitive field are proposed, which can provide reference for the potential application of this kind of new materials in gas sensitive field.
  • Progress in application of carrageenan hydrogel in biomedicine
    LIU Panpan, ZHANG Shuli, GAO Li, WANG Haibin, GUO Jianfeng, HUANG Jingjing, LIU Linlin
    Journal of Functional Materials. 2022, 53(3): 3066-3073. https://doi.org/10.3969/j.issn.1001-9731.2022.03.009
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Carrageenan (carrageenan, CG), a kind of natural sulfated polysaccharide extracted from red seaweed, is a reliable green matrix, which has excellent biocompatibility, biodegradability, antioxidant, anti-virus and anti-tumor properties. Based on carrageenan, hydrogels with various structures and properties (mechanical strength, gel properties and cell affinity) can be widely applied in biomedicine field by combining with other biomaterials and physical or chemical crosslinking. In this review, several types of Cara glue gels and their applications in drug delivery, wound healing, tissue engineering, and biosensor are reviewed, providing theoretical basis for the development of carrageenan in biomedicine.
  • Controlled synthesis of polymer brushes via atom transfer radical polymerization and the most recent advancements of applications
    YUAN Yuka, LIU Yudong, HUA Jing
    Journal of Functional Materials. 2022, 53(3): 3074-3083. https://doi.org/10.3969/j.issn.1001-9731.2022.03.010
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Polymer brushes consist of a linear backbone or the surface of a planar or spherical solid densely grafted with polymeric side chains. The result of steric repulsion leads to chain stretching and less chain entanglement/overlapping. As a result of special macromolecular structures, polymer brushes are imparted with a series of distinctive physical performances such as low viscosity, high rheology, outstanding solvability, etc., together with unique chemical characteristics such as a substantial amount of terminal functional groups. Therefore, polymer brushes exhibit extensive application prospects in the fields of biomedicine and advanced material design. Among the different controlled/“living” polymerization techniques, the atom transfer radical polymerization technique (ATRP) is chemically versatile and robust in the preparation of various well-defined and novel polymers especially for the exploration of new functional materials. Moreover, ATRP has been most extensively used to produce polymer brushes with different properties and structures. This article concentrates exclusively on the most recent advancements of polymer brushes prepared via atom transfer radical polymerization and various applications in the preparation of advanced materials with precise size and structure control. This perspective focuses on the preparation, properties, and applications of polymer brushes.
    • Research & Development
  • Microstructure and properties of magnesium rich nickel slag-fly ash based geopolymer excited by Na2SO4/Na2SiO3
    FENG Chunfu, LIU Yun, LIU Yang, YANG Shengwei, WANG Mitang
    Journal of Functional Materials. 2022, 53(3): 3084-3091. https://doi.org/10.3969/j.issn.1001-9731.2022.03.011
    Abstract ( ) Download PDF ( ) Knowledge map Save
    In this paper, the effects of Na2SO4/Na2SiO3 mixed activator on the strength, microstructure and network structure of magnesium rich nickel slag fly ash based geopolymer were investigated by scanning electron microscope, X-ray diffraction, Fourier transform infrared spectrometer and pressure testing machine. The results showed that the compressive strength of magnesium rich nickel slag fly ash based geopolymer specimen may reach 27.5 MPa after 28 days curing, which was 24.4% higher than that excited by Na2SiO3.In the initial stage of geological polymerization, the addition of Na2SO4 delayed the gelation rate. With the extension of curing time, the reaction of Na2SO4 and Cao in the system consumes Ca2+, generates NaOH, increased the alkalinity of the reaction environment, was conducive to the dissolution of active SiO2 and Al2O3, speeded up the hydration process, and played a synergistic excitation effect. The asymmetric stretching vibration of SO2-4 resulted in the phenomenon of "shifting peak" in the system. In the system, [SO4] group replaced [SiO4] group, accelerating the dissolution of active alumina, generating a large number of needle shaped and plate-like ettringite (AFt), and promoting the formation of sodium magnesium aluminate silicate gel (N-M-A-S).
  • Effect of sol-gel process parameters on quality and properties of CuZnSnS thin films
    WANG Jin, YUAN Yanyan, WANG Jiuhe, Li Tao, ZHANG Lin
    Journal of Functional Materials. 2022, 53(3): 3092-3099. https://doi.org/10.3969/j.issn.1001-9731.2022.03.012
    Abstract ( ) Download PDF ( ) Knowledge map Save
    In this paper, CuZnSnS thin films are prepared by sol-gel method. Firstly, precursor solution is prepared using copper acetate (Cu(CH3COO)2·H2O), zinc acetate (Zn(CH3COO)2·H2O), sthenous chloride (SnCl2·2H2O) and thiourea (CH4N2S) in a certain ratio. Then triethanola mine (C6H15NO3) and ethanola mine (C2H7NO) are as stabilizers to preprare Cu2ZnSnS4 thin films. The surface morphology, phase structure, composition and optical properties of the films are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray energy dispersive spectroscopy (EDS) and UV-visible-near-infrared spectroscopy. The effects of sintering temperature, rotating speed and stabilizer addition on the morphology, phase structure and optical properties of copper, zinc, tin and sulfur (CZTS) films are investigated. The results show that the Cu2ZnSnS4 phase structure films are obtained when the concentration of precursor solution is 0.2 mol/L in the condition of 1 000 r/min spin speed and 10 s coating time, and the sintering temperature is set as 280 ℃. When concentration is set as 0.3 mol/L and the spin speed is set as 3 500 r/min with 15 s coating time, the surface appearance of CZTS films prepared by adding ethanola mine (MEA) stabilizer at sintering temperature of 260 ℃ is greatly improved. The granular morphology of CZTS films prepared by adding 1.5 mL triethanola mine (TEA) and ethanola mine (MEA) stabilizer is observed, and the surface uniformity of CZTS films is improved. However, the crystal quality of the thin film is not as good as that of the sample prepared by 0.2 mol/L solution. The loss of Sn and S elements is founded and leads to the formation of other phases, resulting in a large bandwidth of the thin film. In addition, the crystallization of the sample becomes better with the extension of sintering time, but no large size grains are formed.
  • Study on preparation of temperature-responsive Fe@PNIPAM foam and its oil-water separation performance
    GUO Fengyu, ZHANG Rui, LI Qing, LAI Jingjuan, AN Peng, WU Yuanpeng, LI Zhenyu, ZHAO Chunxia, XIANG Dong, LI Hui, WANG Bin
    Journal of Functional Materials. 2022, 53(3): 3100-3107. https://doi.org/10.3969/j.issn.1001-9731.2022.03.013
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Using foam iron as the substrate, the temperature-sensitive poly-N-isopropylacrylamide (PNIPAM) was modified on the surface of the foam iron substrate by a simple one-step free radical polymerization method to prepare a temperature-responsive oil with controllable surface wettability. When the temperature of the system is lower than the critical solution temperature (LCST): the prepared material exhibits super-hydrophilicity with a water contact angle of 0°, when the temperature of the system is higher than LCST, the surface of the prepared material appears hydrophobic and the contact angle can reach high to 135.2°. The material can realize temperature-sensitive controllable separation of oil and water under the control of external temperature. At the same time, it has magnetic response properties and can be used for remote magnetic-controlled oil-water separation. In the separation process, the material has high flux and can achieves rapid and efficient separation of various oil-water mixtures, and its separation efficiency is higher than 98.1%.
  • Fe3O4@C study on the interface modification and drug transport properties of nanoparticles
    ZENG Yingyi, LONG Hua, WEI Guoying, WU Qiong
    Journal of Functional Materials. 2022, 53(3): 3108-3114. https://doi.org/10.3969/j.issn.1001-9731.2022.03.014
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Recently Fe3O4 nanoparticles have been widely used in drug delivery systems due to their excellent magnetic properties and good biocompatibility. However,the surface of Fe3O4 nanoparticles is prone to agglomeration if it is not modified, which will affect its application performance. In this paper, Fe3O4 is hydrolyzed by ethyl orthosilicate (TEOS) and coated with SiO2 layer. Then the carbon layer is coated by hydrothermal reaction. Finally, SiO2 is etched by NaOH to form a kind of Fe3O4@C core-shell nanomaterials. The structure and morphology of Fe3O4@C nanoparticles were characterized by FT-IR, TEM and UV-Vis absorption spectroscopy, and the interface modification and related properties of nanoparticles are studied. The results show that the magnetic properties of Fe3O4 are not affected by the modified Fe3O4@C, and the specific surface area and the loading rate of Fe3O4 are improved. The loading rate of Fe3O4 reaches 98.9%. The drug release behavior of the compound interface modified Fe3O4@C under different pH conditions is further studied to explore the possibility that pH value could be used as a 'switch' for controlled drug release.
  • Preparation and corrosion resistance of modified g-C3N4 doped polyurethane coating
    AI Xinzhi, DONG Binghai, CHEN Zesheng, WU Congcong, ZHAO Li, WANG Erjing, WAN Li, LI Wenlu, WANG Shimin
    Journal of Functional Materials. 2022, 53(3): 3115-3123. https://doi.org/10.3969/j.issn.1001-9731.2022.03.015
    Abstract ( ) Download PDF ( ) Knowledge map Save
    The modified g-C3N4/polyurethane composite is prepared by blending the modified g-C3N4 and polyurethane through the modification of g-C3N4 by silane coupling agent (OTS). The effects of different mass fractions of modified g-C3N4 on the corrosion resistance and other properties of modified g-C3N4/polyurethane composite are studied. The structure and properties of g-C3N4 are characterized by FT-IR, XRD, XPS and particle size analysis. Meanwhile, the morphology and properties of g-C3N4 composite are characterized by contact angle analysis, scanning electron microscopy, transmission electron microscopy and electrochemistry. The results show that the dispersion of g-C3N4 is enhanced after modification, and the average particle size decreases from 682 nm to 118 nm. The modified g-C3N4 doping enhances the hydrophobicity of polyurethane and increases the contact angle by 25°. The corrosion resistance of the modified g-C3N4/polyurethane composite increases first and then decreases with the increase of the mass fraction of modified g-C3N4. When the mass fraction of modified g-C3N4 is 3%, the corrosion resistance of the composite increases by 58.74% and 46.34%, respectively.
  • Effect of Mn content on the properties of Al-based protective coatings on NdFeB magnets
    LI Hui, LU Fei, LIU Shufeng , ZHANG Shuai, WEN Yongqing, LIU Xiaoyu
    Journal of Functional Materials. 2022, 53(3): 3124-3129. https://doi.org/10.3969/j.issn.1001-9731.2022.03.016
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Al-based protective coatings with different Mn contents (w(Mn)=0-30 wt%) are sprayed on sintered NdFeB magnets by plasma spraying. The phase composition, surface stacking state, hardness and adhesion strength of the coating are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), micro-hardness tester and multi-functional surface property tester. The corrosion behavior of the coating is measured by potentio dynamic polarization tests and neutral salt spray test. The results show that the hard brittle Al-Mn intermetallic compound phase in the coating increases gradually with the increase of Mn content, which leads to the increase of hardness of the coating and the appearance of cracks on the surface of the coating with high Mn content (w(Mn)=25 wt%, 30 wt%) . The surface of the coating with the Mn content of 20 wt%. is compact, without obvious crack and pore defect, the hardness is over 400 HV, the adhesion strength is over 19 N, and the salt spray corrosion time is over 300 h, which could meet the need of the high-strength corrosion resistance coating on the surface of the magnet.
  • Study on the structure and wet catalytic oxidation performance of mesoporous Ag/CeO2 materials
    LIANG Hui, LI Changbo, ZHAO Guozheng, WANG Shuo, XU Hongzhu, FU Yuting
    Journal of Functional Materials. 2022, 53(3): 3130-3135. https://doi.org/10.3969/j.issn.1001-9731.2022.03.017
    Abstract ( ) Download PDF ( ) Knowledge map Save
    The mesoporous Ag/CeO2 composites with different Ag loadings are prepared using cerium nitrate and silver nitrate as raw materials and the block polymer F127 as templating agent, and the materials are characterized by XRD, N2 adsorption-desorption, XPS, SEM and EDS. The results show that the Ag/CeO2 composites are mesoporous structures with a large specific surface area with the presence of Ce3+, Ce4+ and uniform loading of Ag ions on the CeO2 surface. A number of factors affecting the catalytic degradation of phenol are examined. At an initial pH of 6 at 65 ℃, the removal of 100 mg/L phenol COD is 79.19% with the addition of 2 g/L Ag/CeO2(a) catalyst and 1 mL H2O2, and the catalytic effect is still above 50% after five applications.
  • P-doped Co9S8@VS2 nanotube arrays: preparation and performance of water-based zinc-ion mixed supercapacitors
    ZAHNG Hao, LIU Mengjie, QIAN Hui, ZHANG Hui
    Journal of Functional Materials. 2022, 53(3): 3136-3145. https://doi.org/10.3969/j.issn.1001-9731.2022.03.018
    Abstract ( ) Download PDF ( ) Knowledge map Save
    In recent years, vanadium disulfide (VS2), as a transition metal sulfide with two-dimensional layered structure and high surface activity, has been widely used as a cathode material for zinc ion batteries (ZIBs). However, the disadvantages of growth stack and low energy density seriously hinder its application in energy storage equipment. Therefore, Co9S8@P-VS2 NTAs with core-shell structure is prepared by coating P-doped layered VS2 nanosheets on the surface of Co9S8 nanotube arrays (NTAs), which effectively avoids the bulk VS2 nanosheet stacking growth and make layered VS2 disperse uniformally on the surface of the nanotubes. In addition, appropriate doping of P element further improves the conductivity of the heterojunction between Co9S8 nanotubes and VS2 nanosheets. Therefore, benefiting from the synergistic effect of P-dopping and nano-core-shell structure, the prepared Co9S8@P-VS2 NTAs presents excellent electrochemical energy storage properties when a novel zinc-ion hybrid supercapacitor (ZHSCs) as a capacitive positive electrode and a battery-type zinc negative electrode is assembled. When the amount of phosphorus source in the precursor solution is 30 μL/35 mL, the prepared Co9S8@P-VS2 NTAs (Co9S8@P-VS2-30 NTAs) obtains an ultra-high an area specific capacity of 6.72 F/cm2 (current density: 2 mA/cm2) in 2 mol/L ZnSO4 electrolyte, which is much higher than Co9S8@ VS2 NTAs (2.98 F/cm2). At the power density of 1.6 W/cm2, its energy density can reach 2.39 mWh/cm2. Moreover, the ZHSCs maintains good cycle stability, the area specific capacity can still be maintained as 74.26% of the initial specific capacitance after 1000 cycles at 2 mA/cm2.
  • Structure and electrostrain of xSrMAlO4 (M=La, Y) doped BNT-based lead-free piezoelectric ceramics
    ZHAO Guiyuan, WANG Di, LIU Runzheng, ZHENG Yongzhuo, LYU Rongna, HAO Jigong, LI Wei
    Journal of Functional Materials. 2022, 53(3): 3146-3152. https://doi.org/10.3969/j.issn.1001-9731.2022.03.019
    Abstract ( ) Download PDF ( ) Knowledge map Save
    In recent years, bismuth sodium titanate (BNT)-based piezoelectric materials have shown large electro-strain response due to their unique field-induced phase transition, and have shown a great potential in actuator application. In our work, (Bi0.5Na0.5)0.935Ba0.065TiO3-xSrMAlO4 (xSrMAlO4, M=La, Y) lead-free piezoelectric ceramics with good electrostrain performance and temperature stability are prepared by the traditional solid-phase synthesis process. The effect of SrMAlO4 (M=La, Y) component on the phase structure and electrical properties of the ceramics is studied. The results show that the introduction of SrMAlO4 component induces a phase transformation from rhombohedral-tetragonal coexisting phases to a single pseudo-cubic phase, and destroys the ferroelectric order of the matrix material and induces the appearance of weakly polar phase. Thus, the field-induced strain is significantly imported. When the SMA content is 0.9 mol%, the materials exhibit large strain response. Under a 70 kV/cm electric field, the unipolar strain is 0.39% (M = La) and 0.44% (M = Y), respectively, and the corresponding large signals d*33 is 557 pm/V (M = La) and 629 pm/V (M = Y), respectively. The high strain response is derived from the reversible transition from the ergodic relaxation state to the ferroelectric state driven by the electric field. In addition, it is found that 0.9 mol% SrMAlO4 (M = Y) modified ceramic shows excellent temperature stability from room temperature to 100 ℃, which is promising for actuator applications.
  • Preparation and electrochemical properties of SOFC cathode material La0.7Sr0.3Co1-xFexNi0.1O3-δ
    NI Yang, LI Songbo, AN Shengli, DU Xu, XUE Liangmei
    Journal of Functional Materials. 2022, 53(3): 3153-3157. https://doi.org/10.3969/j.issn.1001-9731.2022.03.020
    Abstract ( ) Download PDF ( ) Knowledge map Save
    La0.7Sr0.3Co1-xFexNi0.1O3-δ(x=0.3-0.6) series cathode powders are prepared by sol-gel method. The morphology of the powder is respected by scanning electron microscope (SEM). The phase structure and thermal expansion property of the powder are examined by X-ray diffraction (XRD) and thermal dilatometer, respectively. It is noted that the crystal structure does not change and the thermal expansion coefficient decreases with the increase of Fe doping content. Furthermore, the electrical conductivity and electrochemical impedance spectroscopy of the materials are tested. The results show that the conductivity reaches the peak when the doping amount of Fe is 0.4, and the conductivity is 332.71 S/cm at 400 ℃. In addition, the electrochemical impedance spectra of La0.7Sr0. 3Co0.5Fe0.4Ni0.1O3-δ is shown that the area specific resistance of La0.7Sr0. 3Co0.5Fe0.4Ni0.1-O3-δ is 0.55 Ω cm2 at 800 ℃, which shows that it has the potential to be used as a cathode material for IT-SOFC.
  • Fe71Mo9P13C7 bulk metallic glass with near room-temperature magnetocaloric effect
    GAO Mengqi, WU Kenan, LI Qiang, HUO Juntao, MU Baoxia, MA XU
    Journal of Functional Materials. 2022, 53(3): 3158-3161. https://doi.org/10.3969/j.issn.1001-9731.2022.03.021
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Fe71Mo9P13C7 bulk glassy alloy rod with the maximum diameter of 1.3 mm is fabricated by a combination method of fluxing treatment and J-quenching technique, and the thermodynamic, magnetic and magnetocaloric properties of this alloy have been investigated in the present work. The results show that the Fe71Mo9P13C7 bulk metallic glass (BMG) exhibits the saturation magnetization of 0.55 T the maximum isothermal magnetic entropy change of 2.57 J/(kg·K) and the refrigerant capacity of 305.57 J/kg under an applied magnetic field of 5 T. More importantly, the Curie temperature of the Fe71Mo9P13C7 BMG is as low as 355 K, which is close to room-temperature, and thus it is expected to become a candidate material for room-temperature magnetic refrigeration.
  • Preparation of PLA/rGO nanofiber membrane by electrospinning method and its application in oil-water separation
    DU Guoyong, DUAN Yi, YUAN Qiao, HU Siwei
    Journal of Functional Materials. 2022, 53(3): 3162-3166. https://doi.org/10.3969/j.issn.1001-9731.2022.03.022
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Graphene oxide is prepared by improved Hummers method, and reduced by ascorbic acid to prepare rGO with hydrophobic properties. PLA/rGO nanofiber membrane is prepared by electrospinning, and the effect of the amount of rGO on the hydrophobicity of PLA nanofiber membrane is investigated. The infrared and Raman spectra of PLA/rGO nanofiber films show that PLA and rGO are physically mixed, and there is no chemical change in the process of electrospinning. It is found that the contact angle of nanofiber membrane increases from 118° to 139.2° when the amount of rGO is 0.14%, and the experiment shows that the membrane has good acid-base resistance. When titrating the contact angle of different pH, the contact angle of the membrane can reach more than 125°. From the oil-water separation experiment, it is found that the oil flux of PLA/rGO nanofiber membrane can reach 141.3 L/(m2·h), and the oil-water separation efficiency can reach 98.6%.
    • Process & Technology
  • Studyon synthesis and performance of BPA-PA phenolic epoxy resin conductive adhesive
    GUO Rui, LI Pingan, ZHAO Yunfei
    Journal of Functional Materials. 2022, 53(3): 3167-3174. https://doi.org/10.3969/j.issn.1001-9731.2022.03.023
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Using bisphenol A paraformaldehyde phenolic resin (BPA-PA phenolic resin) and epichlorohydrin as raw materials, BPA-PA phenolic epoxy resin is obtained through nucleophilic substitution reaction. FTIR and 1HNMR are used to confirm the structure. The optimal synthesis process conditions of BPA-PA novolac epoxy resin are obtained through single factor and orthogonal experiments: the amount of epichlorohydrin of 80 g, the amount of catalyst of 0.5 g, the reaction temperature of 80 ℃ and the reaction time of 3 h. When the amount of 10 wt% NaOH is 15 g, the epoxy value reaches 0.565. Then combined non-isothermal DSC, T-β extrapolation line and FT-IR analysis, the best curing process conditions are studied. Finally, the BPA-PA phenolic epoxy resin is used as the matrix resin, and conductive fillers and additives are added to prepare a medium-temperature conductive adhesive. Tensile shear strength, volume resistivity, thermogravimetry and scanning electron microscopy test are conducted for its conductive adhesive. The results show that the self-made BPA-PA phenolic epoxy resin conductive adhesive has a tensile shear strength of 17.04 MPa, a volume resistivity of 8.65×10-4 Ω·cm, and a residual carbon content of 65.28%. Compared with the commercially available conductive adhesive made of E-51 epoxy resin, the self-made BPA-PA phenolic epoxy resin conductive adhesive has increased tensile shear strength by 2.59 MPa, reduced volume resistivity by 2.65×10-4 Ω·cm, and increased carbon residue by 3.88%.
  • Preparation and high-temperature electrochemical properties of
    ZHANG Jinfang, WANG Yuanyuan, LIU Rong, ZHANG Genyan, LI Xiaofeng
    Journal of Functional Materials. 2022, 53(3): 3175-3179. https://doi.org/10.3969/j.issn.1001-9731.2022.03.024
    Abstract ( ) Download PDF ( ) Knowledge map Save
    In this study, a single ion polymer electrolyte of PEGMEM-co-AMPS-Li was developed via free radical polymerization reaction, using 2-Acrylamido-2-methyl-1-propanesulfonic acid (AMPS) and poly (ethylene glycol) methyl ether methacrylate (PEGMEM) as polymeric monomers. Li+ was grafted onto copolymer matrix by lithium reaction of lithium hydroxide solution. PEGMEM provides migration path for lithium-ion. Grafting segments of AMPS could effectively inhibit the crystallization of ethylene oxide (EO) chain segments in PEGMEM, and introduce Li+ onto copolymer matrix to form single-ion electrolyte. The electrolyte exhibits good lithium-ion migration number and electrochemical window, and good interface compatibility with positive and negative electrodes, demonstrating the potential application value of high-performance single-ion polymer electrolyte in improving the safety and rate cycle stability of lithium-ion battery.
  • Preparation and characterization of nano-graphite modified paraffin phase change microcapsules
    ZHANG Yunfeng, LAN Zhixing, ZHANG Lu, LIU Peng
    Journal of Functional Materials. 2022, 53(3): 3180-3185. https://doi.org/10.3969/j.issn.1001-9731.2022.03.025
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Nano-graphite modified paraffin phase change microcapsules (NGPCM) are prepared by solvent evaporation method with paraffin as core material, polysulfone as shell material and nano-graphite as modifier. The PCMs are characterized by SEM, FT-IR, DSC, and TGA to study the effects of different doses of nanographite on the chemical structure, phase change characteristics, surface morphology, thermal stability, and encapsulation rate of PCMs. The results show that when the addition amount of nano-graphite is 1.5%, the overall performance of the microcapsules is the best. The average particle size of the microcapsules is 326.6 μm, the melting temperature and melting enthalpy are 29.87 ℃ and 94.00 J/g, the crystallization temperature and crystallization enthalpy are 23.61 ℃ and 92.95 J/g, and the encapsulation rate of the microcapsules is 61.46%, showing good thermal stability.
  • High temperature thermal reduction graphene aerogel/epoxy resin electromagnetic shielding composites
    ZHANG Yifan, LU Chengzhi, YANG Xueqin, TANG Zicheng, LIU Yong, ZHANG Hui
    Journal of Functional Materials. 2022, 53(3): 3186-3192. https://doi.org/10.3969/j.issn.1001-9731.2022.03.026
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Graphene hydrogels are prepared by a simple one-step hydrothermal reduction method using GO aqueous dispersion as raw material. Two kinds of graphene aerogels with different structures are prepared by freeze drying through directional freezing and conventional freezing. Thermal annealing is conducted at different temperatures. Thermal annealed graphene aerogel/epoxy resin composites with different structures are prepared by vacuum assisted impregnation backfill method. The results show that when the content of graphene is only 0.16 wt%, the radial EMI SE of the TAGA/EP composite is 32 dB, which can be used in industrial or commercial electronic products. Meanwhile, the compressive strength and energy storage modulus of the composite are greatly improved compared with that of pure epoxy resin with the introduction of three-dimensional graphene skeleton. This study provides a simple, green and feasible scheme for the preparation of resin matrix composites with high electromagnetic shielding efficiency.
  • Moleculardynamics simulation of hydrogen bond structure and damping properties of organic polar small molecules/ACM composite system
    CHEN Xiaoyu, WANG Zhenhui, LIU Haibo, ZHAO Xing, XING An, FAN Baoyan, LIU Xiaoyan
    Journal of Functional Materials. 2022, 53(3): 3193-3198. https://doi.org/10.3969/j.issn.1001-9731.2022.03.027
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Molecular dynamics simulation is used to study the hydrogen bond structure and damping properties of hindered phenol AO-70/acrylate rubber (ACM) and hindered amine GW-622/ACM system. The solubility parameters of AO-70 are closer to ACM, the AO-70/ACM system is more stable, and its compatibility is better than that of the GW-622/ACM system. Radial distribution function and hydrogen bond analysis show that intermolecular and intramolecular hydrogen bonds are existed in both systems. As the content of AO-70 and GW-622 increases, the number of hydrogen bonds generated increases, and the probability of bonding increase. When the content of AO-70 and GW-622 are the same, the number of intermolecular hydrogen bonds are the same in both composite systems, but the compatibility of AO-70 and ACM is better, and thus AO-70/ACM system possess better damping performance. The increased number of intermolecular hydrogen bonds in the composite system induce the increase of intermolecular interaction force, decrease of free volume fraction, increase of cohesive energy density. Furthermore, the molecular chains are stacked tighter, the energy consumption in the process of breaking and forming bonds increase, and the damping performance improve. The simulation results provide some references for studying the relationship between hydrogen bond structure and damping performance of high-damping organic composite materials.
  • Study on sound insulation properties of hollow glass microspheres/nitrile rubber polyvinyl chloride composites
    ZHAO Xuelei , CAI Jun, QIN Ming, CHANG Chongxuan, HUO Zhibao
    Journal of Functional Materials. 2022, 53(3): 3199-3205. https://doi.org/10.3969/j.issn.1001-9731.2022.03.028
    Abstract ( ) Download PDF ( ) Knowledge map Save
    HGM/NBR-PVC composites are prepared by melt blending with nitrile butadiene rubber (NBR) and polyvinyl chloride (PVC) as matrix materials and hollow glass microspheres (HGM) as filler. The structural morphology and mechanical properties of HGM/NBR-PVC are tested separately by SEM and universal material testing machine. The sound insulation performance is tested by four channel impedance tube system, and the sound insulation mechanism of the composite material is further analyzed. The results show that the addition of HGM can effectively improve the sound insulation performance of NBR-PVC composites, and its addition amount and radius have significant effects on the sound insulation performance of the composites. The sound insulation performance and elastic modulus of the material increase with the increase of HGM content, and the sound insulation effect is the best when the addition amount is 40 g. The sound insulation performance and elastic modulus of the material decrease gradually with the increase of HGM radius. When the addition amount of HGM is 40 g and the particle diameter is less than 40 μm, the sound insulation performance of the composite reach best, and the average sound insulation loss is 31.6 dB.
  • Effect of heat treatment process on the microstructure and properties of magnetostrictive coating prepared by HOVF
    QI Qingli, SHEN Gongtian, ZHENG Yang, PAN Qingchuan, HUANG Songling
    Journal of Functional Materials. 2022, 53(3): 3206-3209. https://doi.org/10.3969/j.issn.1001-9731.2022.03.029
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Fe-Ga magnetostrictive coating is prepared by high velocity oxy-fuel spraying (HVOF) process as a sensitive element in magnetostrictive guided wave sensors. The effects of different heat treatment temperatures from 300 ℃ to 700 ℃ on the quality of Fe-Ga coatings are investigated, and the microstructure and properties of the coatings are analyzed by SEM, XRD and magnetostrictive tester. Results show that the Fe-Ga coating maintains a single A2 phase structure during the heat treatment process. The deformed grains in the particles gradually recrystallize at the temperature ranging from 300 to 600 ℃, and completed recrystallization occurs at 700 ℃. The magnetostrictive properties increase with the increase of heat treatment temperature, and the corresponding saturation magnetic field gradually decreases. The maximum magnetostriction reaches 46 ppm with the coating annealed at 700 ℃. This study shows that appropriate annealing process can improve the magnetostrictive properties, which is a guideline for the preparation of high-efficiency transducer materials.
  • Schottky contact characteristics of rGO-AuNPs/n-Si
    DUAN Jinyu, ZHANG Hui, LI Yapeng, FENG Junjun, PU Zhuolin, WANG Huiqi , LIU Yu
    Journal of Functional Materials. 2022, 53(3): 3210-3215. https://doi.org/10.3969/j.issn.1001-9731.2022.03.030
    Abstract ( ) Download PDF ( ) Knowledge map Save
    By spin coating method, gold-loaded reduced graphene oxide (rGO-AuNPs) is prepared by the hydrothermal method, which is coated on the surface of silicon single crystal and successful preparation of rGO-AuNPs/n-Si Schottky contact is achieved. The results show that the diffraction peak of rGO-AuNPs is mainly composed of elemental Au, while the diffraction peak of graphene is weak. Au nanoparticles (AuNPs) are evenly distributed on the surface of graphene, indicating the reduced graphene oxide of the load Au is successfully synthesized. It can be seen from the current-voltage (I-V) curve that the rGO-AuNPs/n-Si Schottky contact has a rectification characteristic. Under a load of this paper, with the increase of Au content, the height of the Schottky barrier increases, the ideal factor decreases, but the leakage current increases, perhaps due to the presence of defects in the reduction process of graphene oxide. Tunnel currents and mirror forces are generated, which reduces the transverse uniformity of the Schottky barrier.
  • Effect of TEOS additive on the morphology and performance of PVDF film
    SHI Ze, LI Yuechan, GAO Xuesong, XIE An
    Journal of Functional Materials. 2022, 53(3): 3216-3220. https://doi.org/10.3969/j.issn.1001-9731.2022.03.031
    Abstract ( ) Download PDF ( ) Knowledge map Save
    A series of polyvinylidene fluoride membranes (PVDF) and TEOS modified PVDF membranes are prepared using N,N-dimethylacetamide (DMAc) as the solvent and the immersion precipitation phase inversion method (NIPS). The morphology of the film is observed with a scanning electron microscope, and the influence of the concentration of the casting solution and the TEOS additive on the properties of the film material is investigated through the contact angle, porosity, water permeability and other performance characteristics. The results show that compared with pure membranes, the addition of ethyl orthosilicate can improve the overall performance of hybrid membranes. The concentration of the casting solution is 17%, and the PVDF hybrid membrane prepared by adding 1% TEOS has a contact angle of 86.06°, a porosity of 42.86%, and a water permeability of 2.080 L/(m2·h). At this time, the synthesis of the hybrid membrane achieves the best performance.
Author Center
Review Center
Journal Online
Copyright © Jorunal of Functional Materials
Tel: 023－68264739　 　
E-mail: gnclbjb@126.com　
Total visitors:
Visitors of today:
Now online:
渝公网安备50010902000552号　渝ICP备2022001025号-1