Abstract: Aerogel, a type of three-dimensional nano-structured porous material, has attracted extensive attention since it was developed, which has comprehensive applications in fields of aeronautics and astronautics, petrochemical engineering, environmental protection, architectural engineering, chemical catalysis, and medical and health. Aerogels made from polysaccharides, including cellulose, chitosan, alginate, etc., have been recognized as a type of emerging materials, because they not only show high porosity, high specific surface area, and extremely low density similar to the conventional aerogels, but also feature with renewability, biodegradability and excellent biocompatibility. Metal organic frameworks (MOFs), which are constructed through coordination between metal ions and organic linkers, have shown great application potential in fields of adsorption, catalysis, sensing, drug delivery and so on. Along with the increasing requirement for capability, processability and reusability of materials, growing attention has been paid to polysaccharide/MOFs hybrid aerogels. Since the first report about cellulose-nanocrystals/MOFs hybrid aerogel was published in 2016, different polysaccharides and MOFs have been composited for constructing polysaccharide/MOFs aerogels, and their applications in variou fields have been explored. In this review, three commonly used strategies for preparing polysaccharide-MOFs hybrid aerogels are summarized: (1) direct mixing of pre-prepared MOFs with polysaccharides to make hybrid aerogels; (2) MOFs formed on the surface of polysaccharides before self-assembly and drying to form hybrid aerogels; (3) MOFs formed on the surface of pre-formed polysaccharide aerogels to make hybrid aerogels. The characteristics of these different strategies are introduced and compared in combination with corresponding recent examples. Afterwards, the applications of these hybrid aerogels in different fields are also reviewed. In the end, the possible challenges and the outlook regarding polysaccharide/MOFs hybrid aerogels are illustrated.
王杨鑫, 邓强, 李成贵, 温永宇. 多糖/金属有机框架(MOFs)复合气凝胶的制备及应用进展[J]. 材料导报, 2022, 36(4): 20080197-10.
WANG Yangxin, DENG Qiang, LI Chenggui, WEN Yongyu. Research Progress on Preparation and Application of Polysaccharides-Metal Organic Frameworks Hybrid Aerogels. Materials Reports, 2022, 36(4): 20080197-10.
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