Polyaniline-TiO2 composite photocatalysts for light-driven hexavalent chromium ions reduction

作     者：Xiaoming Deng Yao Chen Jieya Wen Yun Xu Jian Zhu Zhenfeng Bian 邓晓明;陈瑶;闻洁雅;徐赟;朱建;卞振锋

作者机构：The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional MaterialsShanghai Normal UniversityShanghai 200234China 

基　　金：supported by the National Natural Science Foundation of China(21876114,21761142011,and 51572174) Shanghai Government(19160712900) International Joint Laboratory on Resource Chemistry(IJLRC),and Ministry of Education of China(PCSIRT_IRT_16R49) supported by The Program for Professor of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning Shuguang Research Program of Shanghai Education Committee 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2020年第65卷第2期

页      码：105-112,87页

摘      要：In order to develop efficient photocatalysts,great efforts have been made to reduce hexavalent chromium to trivalent *** photocatalytic efficiency of this reduction depends largely on the adsorption and diffusion of hexavalent chromium ions on the surface of the *** this paper,polyanilineTiO2 composite can effectively improve the photocatalytic reduction performance and stability of hexavalent chromium *** effect of polyaniline(PANI) thickness on Cr(VI) activity and stability of photocatalytic reduction was studied by adjusting the content of PANI on Mesoporous TiO2(MT) *** the irradiation conditions,the reaction results showed that the reduction rate was 100%,and the maximum reaction rate reached 0.62 min-1 when the PANI modification was 3.0%.Moreover,the results showed that the reduction performance remained 100% after ten *** main reason is that the PANI modified on the surface of TiO2 is rich in positively charged amino group,which can efficiently adsorb the reactant Cr(VI),and make the product Cr(III) leave the reaction interface quickly,thus ensuring the performance of photocatalyst.

主 题 词：Polyaniline Titanium dioxide Photo-reduction Hexavalent chromium Trivalent chromium 

学科分类：083002[083002] 0830[工学-生物工程类] 081705[081705] 07[理学] 08[工学] 0817[工学-轻工类] 09[农学] 0903[农学-动物生产类] 0713[0713] 

核心收录：

D　O　I：10.1016/j.scib.2019.10.020

馆 藏 号：203878522...