Abstract A novel Fe(III) modified Bi2O4 (Fe–Bi2O4) photocatalyst was prepared via the wet impregnation method, and measured through XRD, XPS, TEM, BET and DRS to analyze crystal structure, feature, textural and optical properties. Measurement results verified that Fe(III) formed nanoparticles loaded on the Bi2O4 nano-rod surface, which could contribute to accelerate photoinduced electrons efficient transfer and separation by interfacial charge transfer effect. When Fe–Bi2O4 photocatalyst was applied for decomposing rhodamine (RhB), the optimal photocatalyst (Fe–Bi2O4(45 wt%)) exhibited higher reaction rate constant in comparison to pure Bi2O4. Meanwhile, different radical scavengers tests revealed that h+ and ·O2− exhibited the major role in photocatalysis course. Finally, combined with above experimental results, a probable photocatalytic mechanism for Fe–Bi2O4 hybrid photocatalyst was presented.

中文翻译：

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Fe(III) 修饰的 Bi2O4 纳米棒通过界面电荷转移效应提高光催化性能

摘要 采用湿法浸渍法制备了一种新型 Fe(III) 改性 Bi2O4 (Fe-Bi2O4) 光催化剂，并通过 XRD、XPS、TEM、BET 和 DRS 进行测量，以分析晶体结构、特征、结构和光学性质。测量结果证实 Fe(III) 形成了负载在 Bi2O4 纳米棒表面的纳米颗粒，这有助于通过界面电荷转移效应加速光致电子的有效转移和分离。当 Fe-Bi2O4 光催化剂用于分解罗丹明（RhB）时，与纯 Bi2O4 相比，最佳光催化剂（Fe-Bi2O4（45wt%））表现出更高的反应速率常数。同时，不同的自由基清除剂测试表明，h+和·O2-在光催化过程中表现出主要作用。最后，结合上述实验结果，