期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 301, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2021.120787
关键词
Heterotopic reaction strategy; Enhanced synergistic photocatalytic ability; Selective reduction of trapped Cr (VI); Ion imprinted CdS/HTNW; Stable and self-cleaning membrane
资金
- National Natural Science Foundation of China [21908080]
- Natural Science Foundation of Jiangsu Province [BK20180884]
- Zhenjiang Key Research & Development Project [SH2018021]
- Jiangsu Government Scholarship for Overseas Studies [JS-2018-243, JS-2018-241]
- Young Scientific and Technological Talents Support Project of Jiangsu Association for Science and Tech-nology
- Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment
The IM-Cd/HT membrane, prepared by assembling HTNW and IM-CdS, showed excellent synergistic balanced removal effect for chromium and tetracycline through selective migration and reaction, achieving dual removal. The membrane exhibited high chromium flux and rejection rate.
Ion imprinted CdS/HTNW photocatalytic membrane (IM-Cd/HT membrane) was prepared by assembling the oxidation type H2TinO2n+1 center dot xH(2)O nanowires (HTNW) and the reduction type ion imprinted CdS (IM-CdS) for the removal of Cr6+ and tetracycline. Due to the imprinted cavities, Cr6+ was preferentially adsorbed and trapped at specific reaction sites for reduction reactions under the interference of other ions, and the selective reduction coefficients reached 80.01-fold and 91.92-fold. More intriguingly, Cr6+ and tetracycline reacted on the IM-Cd/HT membrane in a heterotopic manner, Cr6+ migrated to IM-CdS for selective reduction, while tetracycline migrated to HTNW for synergistic oxidation, and there was no interference between the two reactions, thereby IM-Cd/HT membrane exhibited a good synergistic balanced removal effect for Cr6+ and tetracycline. Besides, the Cr6+ flux of IM-Cd/HT membrane reached about 2952 L m(-2) h(-1) bar(-1), and the rejection rate of Cr6+ was 62.02%. This study provides a reference for the design of functional self-cleaning membrane with good synergistic photocatalytic ability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据