纳米纤维素基吸附材料

Nanocellulose-Based Adsorption Materials

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 refers to a family of novel cellulose materials with the nanosized （2 - 100 nm） cellulose microfibrils in diameter. Because of the high aspect ratio, large specific surface area, exceptional mechanical properties as well as ease for surface modification, nanocelluose has become a research focus of biosorbent materials areas. In this article, the achievements in the nanocellulose-absorbent materials in recent years are summarized, and the research progress of absorbent materials based on nanocrystalline cellulose （NCC）, nanofibrillated cellulose （NFC）, and bacterial cellulose （BC） in the aspects of removing dyes, heavy metal ions, CO2 gas, and other pollutants （e. g. antibiotics, aromatic organic compounds, radioactive elements, and volatile organic compounds） , are reviewed, respectively. Besides, the existing problems of nanocellulose-based adsorbent materials are discussed, and their future development prospects are presented.