MnO Z-scheme heterojunction exhibits a strong redox capacity, thereby it has great potential in the field of photocatalysis for gaseous benzene oxidation to address environmental pollution. However, the self-oxidation of MnO due to the accumulation of photogenerated holes severely restricts its practical application. Herein, a highly coupled MnO/MnO Z-scheme heterojunction modified by CoO co-catalyst grown on ammoniated carbon cloth (MnO/CoO@ACC) was constructed through electrodeposition and applied for efficient photocatalytic benzene degradation. The optimized MnO/CoO@ACC presents high-efficient degradability, mineralization rate and high stability after 60 cycles (30 h). CoO served as a hole collector to promote the extraction of photogenerated holes from the MnO surface, suppressing the photocorrosion of MnO. Additionally, the by-product CO was more easily absorbed and activated on MnO/CoO@ACC surface due to the introduction of CoO The electrodeposition-photocatalysis strategy developed in this work shows great application prospects for environmental contaminant remediation.

中文翻译：

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Co3O4助催化剂修饰的高耦合MnO2/Mn5O8 Z型异质结：一种高效稳定的气态苯分解光催化剂


MnO Z型异质结表现出很强的氧化还原能力，因此在气态苯氧化光催化解决环境污染领域具有巨大潜力。然而，MnO由于光生空穴的积累而发生自氧化，严重限制了其实际应用。在此，通过电沉积构建了在氨化碳布上生长的 CoO 助催化剂修饰的高度耦合的 MnO/MnO Z 型异质结（MnO/CoO@ACC），并将其用于高效光催化苯降解。优化后的MnO/CoO@ACC在60次循环（30小时）后表现出高效的降解性、矿化率和高稳定性。 CoO作为空穴收集器，促进光生空穴从MnO表面的提取，抑制MnO的光腐蚀。此外，由于CoO的引入，副产物CO更容易在MnO/CoO@ACC表面上被吸收和活化。这项工作中开发的电沉积-光催化策略在环境污染物修复方面显示出巨大的应用前景。