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[期刊论文]

Simultaneous water sterilization and photocatalytic degradation by full-spectrum responsive Zn3In2S6/WO3−x S-scheme heterojunction: Mechanism insight and toxicity assessment

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author:

Liu, Xiaofeng (Liu, Xiaofeng.) [1] | Meng, Zhenbang (Meng, Zhenbang.) [2] | Chen, Weirui (Chen, Weirui.) [3] | Unfold

Indexed by:

EI

Abstract:

It is crucial to develop highly efficient full-spectrum-responsive S-scheme heterojunctions for wastewater purification. Herein, an innovative Zn3In2S6/WO3−x heterojunction was synthesized, featuring full-spectrum responsiveness. It achieved 100 % inactivation of methicillin-resistant Staphylococcus aureus (MRSA) in 45 min and 90.34 % photocatalytic degradation of tetracycline (TC) in 120 min. Its effectiveness was mainly due to rapid charge separation via the S-scheme electron transfer pathway and near-infrared light absorption from the Localized Surface Plasmon Resonance (LSPR) effect of WO3−x. Importantly, it showed robust photocatalytic capacity under diverse conditions. Quenching experiments and EPR analysis confirmed that ·OH and ·O2− played essential roles in photocatalytic degradation. Intermediate products were identified using LC-MS, 3D EEMs, and TOC, revealing the degradation pathway. Quantitative structure–activity relationship (QSAR) analysis suggested reduced ecotoxicity of pollutants. A potential mechanism for enhanced sterilization and photocatalytic degradation was proposed. This study provides a theoretical and experimental basis for designing novel heterojunctions for solar-assisted water purification. © 2025 Elsevier Ltd

Keyword:

Chemicals removal (water treatment) Infrared absorption Photocatalytic activity Photodegradation Sterilization (cleaning) Surface plasmon resonance Wastewater treatment

Community:

  • [ 1 ] [Liu, Xiaofeng]School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou; 510006, China
  • [ 2 ] [Meng, Zhenbang]School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou; 510006, China
  • [ 3 ] [Chen, Weirui]School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou; 510006, China
  • [ 4 ] [Huang, Rui]School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou; 510006, China
  • [ 5 ] [Chen, Qiaoshan]School of Environmental Science and Engineering, Fuzhou University, Fujian; 350108, China
  • [ 6 ] [He, Qi]School of Public Health, Southern Medical University, Guangzhou; 510515, China
  • [ 7 ] [Chen, Ri]School of Electromechanical Engineering, Guangdong Polytechnic Normal University, Guangdong, Guangzhou; 510665, China
  • [ 8 ] [Zhou, Lihua]School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou; 510006, China
  • [ 9 ] [Wang, Wenxia]School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou; 510006, China

Reprint 's Address:

  • [wang, wenxia]school of biomedical and pharmaceutical sciences, guangdong university of technology, guangzhou; 510006, china

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Source :

Chemical Engineering Science

ISSN: 0009-2509

Year: 2025

Volume: 312

4 . 1 0 0

JCR@2023

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

30 Days PV: 1

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