Aerogels have low density,high specific surface area and porosity,and can efficiently absorb gases such as carbon dioxide and pollutants in water,such as heavy metals,organic dyes,drugs,pesticides,etc.However,traditional aerogels are difficult to degrade and have poor biocompatible.Aerogels made from biomass have the advantages of low cost,green and renewability and ease of functionalization,and have been developed rapidly in the past decade.Biomasses are significantly different,thus the difficulty and key points of preparing aerogels are different too.In this paper,aerogels were classified according to the types of biomass raw materials,such as cellulose aerogels,lignin aerogels,water-soluble polysaccharide aerogels gel,etc.The preparation methods,adsorption properties and adsorption mechanisms of various biomass aerogels in recent years were briefly described.The challenges for the development of biomass aerogel adsorbents were explored,and their future development direction was envisioned.
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基金资助
粤港合作项目(2017A050506055);广东省教育厅项目(2017KZDXM045和2017KTSCX098);广州市对外合作项目(201907010033);广东省科技计划项目(2016A020210066)
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