Applied Catalysis2022，Vol.30112.DOI:10.1016/j.apcatb.2021.120787

Heterotopic reaction strategy for enhancing selective reduction and synergistic oxidation ability through trapping Cr (VI) into specific reaction site: A stable and self-cleaning ion imprinted CdS/HTNW photocatalytic membrane

Xu, Yangrui Wang, Panpan Yan, Huan Song, Minshan Ma, Changchang Han, Song Liu, Xinlin Lu, Ziyang Zhou, Guosheng Li, Bing
Applied Catalysis2022，Vol.30112.DOI:10.1016/j.apcatb.2021.120787
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  • NSTL
  • Elsevier

Heterotopic reaction strategy for enhancing selective reduction and synergistic oxidation ability through trapping Cr (VI) into specific reaction site: A stable and self-cleaning ion imprinted CdS/HTNW photocatalytic membrane

Xu, Yangrui 1Wang, Panpan 1Yan, Huan 1Song, Minshan 2Ma, Changchang 3Han, Song 1Liu, Xinlin 4Lu, Ziyang 1Zhou, Guosheng 1Li, Bing1
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作者信息

  • 1. Jiangsu Univ, Sch Environm & Safety Engn, Inst Environm Hlth & Ecol Secur, Zhenjiang 212013, Jiangsu, Peoples R China
  • 2. Jiangsu Univ Sci & Technol, Sch Sci, Zhenjiang 212003, Jiangsu, Peoples R China
  • 3. Dongguk Univ, Dept Chem, Seoul 04620, South Korea
  • 4. Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Jiangsu, Peoples R China
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Abstract

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.

Key words

Heterotopic reaction strategy/Enhanced synergistic photocatalytic ability/Selective reduction of trapped Cr (VI)/Ion imprinted CdS/HTNW/Stable and self-cleaning membrane

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量38
参考文献量72
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