Review & Advance
In view of the advantages of cellulose and its various applications, how to obtain cellulose from biomass and make it into a configuration that fits the target application scenario is of great importance. Firstly, the extraction methods of cellulose were summarized, including acid-alkali, ozonolysis, ionic liquids, deep eutectic solvents, organic solvent, and steam explosion. The pros and cons of these extraction methods were compared and analyzed. Secondly, the preparation methods of fibrous membranes were elaborated, including electrospinning, melt spinning and wet spinning. The electrospinning, a simple and cheap technique, is considered to be a commonly used method. More importantly, nanoscale fibers with high specific surface areas can be fabricated by this method and are expected to provide significant contributions to many properties and make a positive impact on the applications. In addition, these recent and excellent applications of fibrous membranes in substance separation, fabrics, photoelectricity and medicine were overviewed. Finally, the perspectives and challenges in cellulose extraction, fibrous membrane preparation and application were outlined.