Abstract To improve the photocatalytic oxidation reaction activity for NO removal, photocatalysts with excellent activity are required to activate molecular oxygen. Solid solution and heterojunction were suggested as effective strategies to enhance the molecular oxygen activation viaexciton and carrier photocatalysis. In this study, a solid solution and heterojunction containing BiOBr0.5I0.5/BiOI catalyst was synthesized, and it showed improved photocatalytic activity for removing NO. The photocatalytic NO removal mechanism indicated that synergistic effects between the solid solution and heterojunction induced the enhanced activity for molecular oxygen activation. The photogenerated holes, superoxide, and singlet oxygen generated by the carrier and exciton photocatalysis supported the high photocatalytic NO removal efficiency. This study provides new ideas for designing efficient Bi-O-X (X = Cl, Br, I) photocatalysts for oxidation reactions.

中文翻译：

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BiOBr0.5I0.5/BiOI利用固溶体和异质结的协同作用增强分子氧活化用于光催化NO去除

摘要 为了提高光催化氧化反应去除NO的活性，需要具有优异活性的光催化剂来活化分子氧。固溶体和异质结被认为是通过激子和载流子光催化增强分子氧活化的有效策略。本研究合成了一种含固溶体和异质结的 BiOBr0.5I0.5/BiOI 催化剂，其光催化去除 NO 的活性有所提高。光催化NO去除机理表明，固溶体和异质结之间的协同作用诱导了分子氧活化的增强活性。载体和激子光催化产生的光生空穴、超氧化物和单线态氧支持高光催化 NO 去除效率。