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纳米纤维素是一大类微纤单元直径在纳米级(2~100 nm)的新型纤维素材料,因其长径比高、比表面积大、力学性能优异及表面易于化学修饰,成为现今生物质吸附材料领域的研究热点。本文总结了近年来纳米纤维素基吸附材料方面的研究成果,介绍了以纳晶纤维素(NCC)、纳纤化纤维素(NFC)以及细菌纤维素(BC)为基材的吸附材料,及其在移除染料、重金属、CO_2气体和其他污染物(如抗生素、芳香族有机物、放射性元素、易挥发的有毒有机物)的研究进展。最后,本文对纳米纤维素基吸附材料存在的问题进行探讨,并对其未来发展前景进行了展望。
Nanocellulose is a new type of cellulose material with a diameter of nanometer (2 ~ 100 nm). The nanostructured cellulose is a new type of cellulose material with nanometer (2-100 nm) in diameter. Due to its high aspect ratio, large specific surface area, excellent mechanical properties and easy surface chemical modification, Adsorption materials in the field of research. This paper summarizes the research results of nanocellulose-based adsorbents in recent years, and introduces the adsorption materials based on nanocrystalline cellulose (NCC), nanofibrillar cellulose (NFC) and bacterial cellulose (BC) Its research progress in the removal of dyes, heavy metals, CO 2 gas and other pollutants (such as antibiotics, aromatic organic compounds, radioactive elements, volatile organic compounds). Finally, the paper discusses the problems existing in the nano-cellulose-based adsorbents and prospects its future development.