Novel oxygen vacancies-enriched AgI/Cu-BiVO (ACBV) S-scheme heterojunction catalysts were constructed to boost photocatalytic organics degradation and inactivation with peroxymonosulfate (PMS) assistance. Specific interfacial charge transfer and abundant active centers were guided by introducing Cu doping and AgI coupling into BiVO, with the catalytic activity and mechanism systematically investigated. The optimal 0.25-ACBV heterojunction exhibited 97.6% tetracycline (TC) degradation under PMS-assisted visible light and achieved effective inactivation of within 20 min (78.8%). The S-scheme heterostructure from Cu-BiVO to AgI and synergistic effects endowed the system with high-energy carrier transfer kinetics and strong oxygen reduction capability. Meanwhile, the redox cycling of Cu/Cu and surface oxygen defects served as electron acceptors to accelerate interfacial charge separation and as adsorption activation sites for PMS, promoting efficient mass transfer in the non-homogeneous system. This study inspires the design of high-performance S-scheme photocatalytic activators and expands their potential applications in environmental remediation.

中文翻译：

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通过 S 型 AgI/Cu-BiVO4 异质结增强过一硫酸盐活化，实现高效光催化有机物降解和铜绿微囊藻灭活：性能、界面工程和机制见解

构建了新型富氧空位 AgI/Cu-BiVO (ACBV) S 型异质结催化剂，在过一硫酸盐 (PMS) 的辅助下促进光催化有机物降解和失活。通过在 BiVO 中引入 Cu 掺杂和 AgI 偶联来引导特定的界面电荷转移和丰富的活性中心，并系统地研究了催化活性和机理。最佳的0.25-ACBV异质结在PMS辅助可见光下表现出97.6%的四环素(TC)降解，并在20分钟内实现有效灭活(78.8%)。 Cu-BiVO到AgI的S型异质结构和协同效应赋予该体系高能载流子转移动力学和强氧还原能力。同时，Cu/Cu的氧化还原循环和表面氧缺陷作为电子受体加速界面电荷分离，并作为PMS的吸附活化位点，促进非均质系统中的有效传质。这项研究启发了高性能S型光催化活化剂的设计，并扩展了其在环境修复中的潜在应用。