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Ag nanoparticles modified oxygen-vacancy-rich BiOCl boost photocatalytic degradation of antibiotics
Zhiyuan Pang, Bin Wang*, Taiquan Yang, Yang Zhan, Jiexiang Xia*, Huaming Li*
https://doi.org/10.1016/j.cjsc.2026.101098
BiOCl; Ag photodeposition; oxygen vacancy engineering; photocatalytic activity; defect-metal co-modulation
ABSTRACT
Designing photocatalysts that can simultaneously accelerate charge separation and maintain strong redox capability is essential for improving visible-light catalytic efficiency. However, achieving these two requirements within a single material system remains difficult. In this work, Ag-decorated oxygen-vacancy-rich BiOCl photocatalysts, denoted as Ag/Vo-BiOCl, were developed by integrating oxygen vacancies with photodeposited Ag nanoparticles. Oxygen vacancies reshape the electronic landscape of BiOCl, enhance visible-light absorption, and promote bulk charge separation, whereas Ag nanoparticles act as efficient electron-utilization centers that facilitate interfacial electron extraction and oxygen activation. Comprehensive structural, optical, and microscopic analyses confirm the successful introduction of vacancies and the uniform dispersion of Ag on the BiOCl surface. Benefiting from the complementary roles of bulk defects and surface Ag, the optimized 3 wt% Ag/Vo-BiOCl exhibits markedly improved photocatalytic performance toward ciprofloxacin (CIP) and tetracycline (TC) degradation under visible light. Electrochemical measurements further reveal accelerated carrier transport and enhanced interfacial reaction kinetics. This study demonstrates an effective defect–metal synergistic strategy for overcoming intrinsic carrier-transport limitations in BiOCl-based materials and offers guidance for designing high-efficiency visible-light photocatalysts.
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CN 35–1112/TQ, ISSN 0254–5861, Online ISSN: 2949-768X Copyright @ 2022 Chinese Journal of Structural Chemistry-www.Chinese Journal of Structural Chemistry.net. All Rights Reserved 闽ICP备2022002645号-1