Abstract A novel oxygen vacancy (OVs) modified Bi2MoO6/WO3 hybrid electrode based on the ITO glass was successfully fabricated by a facile two-step hydrothermal and solvothermal method with one calcination process between two reactions. The result exhibited an enhanced optical harvesting and photogenerated electron migration capability. In the degradation process of rhodamine B (RhB), the hybrid electrode showed a better photoelectrocatalytic removal ratio of 80.1% within 4 h under visible light irradiation and 2.0 V bias, which is mainly ascribed to the synergistic promotion of surface OVs, heterostructure and external bias. The optical features and band structures of the composite catalyst were analyzed to give out the possible electrode system mechanism of the PEC degradation process. This work not only constructs a newly designed OVs Bi2MoO6/WO3 photoelectrode but also provides some investigations in fabricating and controlling process of photoelectrodes.

中文翻译：

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氧空位修饰的Bi2MoO6/WO3电极对RhB具有增强的光电催化降解活性

摘要 通过简便的水热和溶剂热两步法，在两个反应之间进行一次煅烧，成功制备了一种基于 ITO 玻璃的新型氧空位 (OVs) 改性 Bi2MoO6/WO3 混合电极。结果表现出增强的光学捕获和光生电子迁移能力。在罗丹明 B (RhB) 的降解过程中，混合电极在可见光照射和 2.0 V 偏压下在 4 h 内表现出更好的光电催化去除率 80.1%，这主要归因于表面 OVs、异质结构和外部的协同促进。偏见。分析了复合催化剂的光学特征和能带结构，给出了PEC降解过程可能的电极系统机制。