期刊
ACS CATALYSIS
卷 11, 期 20, 页码 12763-12776出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.1c03783
关键词
photoelectrocatalysis; electroanalytical tools; AC voltammetry; impedance analysis; paired electrolysis
资金
- National Research Foundation of Korea [2019M3E6A1063863]
- WRISE, Waseda University, Tokyo, Japan
AC techniques are less commonly used in photoelectrocatalysis, but have great potential in further understanding interfaces and energy conversion reactions. Techniques like Mott-Schottky and intensity-modulated photocurrent spectroscopy can lead to advancements in the field.
Several spectroscopic and electroanalytical techniques are in use when it comes to the investigation of interfaces in photoelectrocatalysis (PEC). Among them, AC techniques are the least used ones except for electrochemical impedance analysis despite having several advantages over DC electroanalytical techniques. Though AC electrolysis of water was known in the early years of the 20th century, it was not given significant attention either. In this Perspective, we discuss how these barely used yet powerful AC techniques, namely, (1) Mott-Schottky in impedance and photoelectrochemical impedance analyses (equivalent circuit analysis, capacitance spectroscopy), (2) intensity-modulated photocurrent spectroscopy (IMPS), (3) FS-HA-FT-AC voltammetry, and (4) paired electrolysis, can lead us ahead in the way of further fathoming interfaces in PEC with highlights on prospects of these AC techniques for energy conversion reactions.
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