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深入研究各种光电化学反应过程的机理和反应动力学性质等对提升光电转换效率、发展绿色高效光伏能源器件具有重要意义.扫描电化学显微镜(SECM)是一种具有高时空分辨率的电化学扫描探针显微镜技术,不仅可以研究光电催化反应的机理和动力学性质,还可以通过光电流反馈模式进行组合成像,实现光电催化剂的性能评估和优选,近年来逐渐成为光电化学研究领域微区观测和反应动力学研究的重要技术手段.本综述系统介绍了SECM在光电化学研究中的应用,首先介绍用于光电化学研究的SECM的实验装置、工作原理和工作模式,然后对SECM在光合作用、光诱导电荷转移、电致化学发光、光解水、太阳能电池等光电化学研究领域的应用进行了详细介绍,最后展望了SECM在光电化学研究领域中的应用发展方向.
In-depth study of the mechanism and reaction kinetic properties of various photoelectrochemical reaction processes is of great significance to improve the photoelectric conversion efficiency and to develop a green and efficient photovoltaic energy device.Secondary scanning electrochemical microscopy (SECM) is a kind of electrochemical with high spatio-temporal resolution The scanning probe microscope technology not only can study the mechanism and kinetic properties of the photoelectrocatalytic reaction, but also can perform the combination imaging through the photocurrent feedback mode to realize the performance evaluation and optimization of the photoelectrocatalyst. In recent years, it has gradually become the focus of the field of photoelectrochemistry And reaction kinetics.This review system systematically introduces the application of SECM in the research of photoelectrochemistry, first introduces the experimental device, working principle and working mode of SECM for photoelectrochemical research, and then introduces the SECM in photosynthesis, Photoinduced charge transfer, Electrochemiluminescence, Photolysis water, Photoelectrochemistry of solar cells and so on are introduced in detail. Finally, the application prospect of SECM in the field of photoelectrochemistry is prospected.