The efficient utilization of sunlight is an important research direction in the field of new energy. Photocatalysis, a technologyharnessing sunlight for pollutants degradation, carbon dioxide reduction, water decomposition in hydrogen production, radioactive elementsreduction and separation, photocatalytic nitrogen fixation and other difficult reactions under normal temperature and pressure, has the advantages of cheap, environmental protection, sustainable and so on. In the heterogeneous photocatalytic reaction, in order to prevent thesolid phase photocatalyst from agglomeration or loss in the liquid phase or gas phase reaction environment, suitable supporting materialsare needed to protect and fix the photocatalyst. Carbon aerogel has been widely studied in the field of photocatalysis because of its conductivity, chemical inertia and high specific surface area of carbon materials. Biomass-based carbon aerogels using biomass materials as precursors, have the advantages of environmental protection, lower cost, and wide sources of raw materials, compared to conventional carbonaerogels. In the paper, the characteristics of biomass-based carbon aerogels were summarized and the development status of biomassbased carbon aerogels as a new type of carbon aerogels was discussed. Finally, with the existing research, the feasibility and advantages ofbiomass-based carbon aerogels as photocatalyst supporting materials were proved, and suggestions for future research directions of biomass-based carbon aerogels were provided. Currently, biomass-based carbon aerogels have begun to show their prominence in many fieldssuch as adsorption of heavy metals, oil-water separation, flexible capacitors, and electromagnetic wave absorption. In the field of photocatalysis, the method of loading photocatalysts on biomass-based carbon aerogels is still in its nascent stages, with a primary focus on theselection of biomass raw materials and the method of loading photocatalysts. Two main research directions include the preparation of carbonaerogels from cellulose aerogels and the preparation of carbon aerogels from porous plants as precursors. Compared with other biomass extracts such as protein and starch, cellulose aerogels stand out for the wide sources of raw materials, high carbon content, and easier construction of complex gel networks. The process of preparing carbon aerogels using porous plants as precursors can be faster and simpler,and the natural complex structure of biomass materials can become a natural template for carbon aerogels. These biomass materials containa variety of P, S, and other elements,which can also provide natural heteroatom support for different subsequent development directionsof carbon aerogels. Up to now, the actual effect of biomass-based supported photocatalysts has been verified. In the future, research on biomass-based supported photocatalysts can be based on existing results, analyze the elemental composition of different biomass precursorsand the impact of three-dimensional pore structures on loading, and combine with other proven photocatalytic modifications and load method. At the same time, it can also try to give full play to the characteristics of biomass, such as cultivating plants as precursors of carbonaerogels to obtain better carbon aerogel templates. Ultimately, multi-faceted research results can be integrated to further improve the catalytic ability and loading capacity of biomass-based carbon aerogel-loaded photocatalysts, and provide new solutions for cheap and environmentally friendly photocatalytic systems.

焦月(1993—),女,黑龙江大庆人,讲师,博士。E-mail:yjiao123@126.com

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JIAO Yue,DING Jiaxuan,MEI Changtong,et al.Advances in preparation and properties of biomass-based carbon aerogelphotocatalysts[J].Clean Coal Technology,2023,29(12):19-33.