In2O3修饰三维纳米花MoSx构建S型异质结用于高效光催化产氢

形貌控制和异质结构建是提升光催化剂性能的有效策略。本文采用In₂O₃修饰三维纳米花MoS_x并构建S型异质结，为电子的传输提供了特殊的转移途径。通过合理调控In₂O₃的负载量，MoS_x/In₂O₃的最佳产氢速率能够达到6704.2 μmol∙g⁻¹∙h⁻¹，是纯MoS_x的1.8倍。采用荧光光谱和电化学测试证实复合材料中内部电子和空穴对的分离效率得到了有效的提升，并利用紫外漫反射测试和羟基自由基实验推测了析氢机理。

In2O3-Modified Three-Dimensional Nanoflower MoSx Form S-scheme Heterojunction for Efficient Hydrogen Production

Morphology regulation and the improvement of carrier separation efficiency are important strategies for the preparation of photocatalysts with excellent performance. MoS_x with a three-dimensional (3D) nanoflower morphology formed by nanosheet stacking was prepared by a simple hydrothermal method, and MoS_x/In₂O₃ with good hydrogen evolution activity was obtained by coupling with In₂O₃. The preparation of the three-dimensional nanoflower morphology combined with the construction of an S-scheme heterojunction improves the electron accumulation at the active site for hydrogen evolution reaction. The UV diffuse reflection test showed that the issue of poor light absorption of In₂O₃ was improved. The rapid separation and transfer of electrons were effectively confirmed by characterization methods such as fluorescence spectroscopy and electrochemical tests. The most intuitively manifestation of the performance improvement of the composite material is that the optimal hydrogen evolution rate reached 6704.2 μmol∙g⁻¹∙h⁻¹, which is 1.8 times that of pure MoS_x. Therefore, in this study, a new idea for the development of molybdenum-based sulfides for photocatalytic hydrogen production is provided.