标题：Chitosan-based recyclable composite aerogels for the photocatalytic degradation of rhodamine B

作者：Chen Jiajia, Li Hao, Ma Lulu, Jiang Guoxia, Li Dan, Wu Yang, Shi Xiaowen, Li Dan, Wang Xu*, Deng Hongbing*

来源出版物: Carbohydrate Polymers卷: 273 期: 1 页: 118559 DOI: 10.1016/j.carbpol.2021.118559 出版年: 2021

摘要：TiO2 based photocatalyst with sufficient reusability for the degradation of water pollutants remains a challenge. Here, we report a composite chitosan-based aerogel containing TiO2 nanoparticles, multiwalled carbon nanotubes and layered silicate rectorite with sufficient mechanical strength for Rhodamine B degradation. The aerogels with homogeneous oriented lamellar structure were successfully prepared via a unidirectional freeze-casting technique. As-prepared aerogels showed specific surface area of 84.59 m2/g. The addition of rectorite and carbon nanotubes accelerated the photodegradation and rectorite significantly enhanced the overall mechanical performance. Rapid degradation of rhodamine B (95% in 100 min) was observed on aerogels with 2 wt% and 4 wt% of rectorite. After 3 cycles, 75% degradation of Rhodamine B was achieved with CTCR4, confirming its reusability. Thus, the composite chitosan aerogels show high photocatalytic degradation efficiency towards Rhodamine B during cycle use.

作者关键词: Oriented lamellar structure; Unidirectional freeze-casting method; Photocatalytic degradation; Multi-walled carbon nanotubes; Rectorite

地址：

(1) Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China

(2) SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China

(3) Three Gorges Base Development, Co. Ltd, Yichang 443002, China

通讯作者地址: Wang Xu, Deng Hongbing;

Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China

电子邮件地址： xu.wang@whu.edu.cn (Wang Xu .), hbdeng@whu.edu.cn (Deng Hongbing)

影响因子：9.381