Pt/TiO₂上与光催化分解丙酸相偶合的阴极过程

Pt/TiO 2 上与光催化分解丙酸相偶合的阴极过程 THE CATHODIC PROCESS COUPLED WITH PHOTOCATALYTIC DECOMPOSITION OF PROPIONIC ACID ON Pt/TiO 2 蔡乃才 Chai Naichai Dong Qinhua 1 first-author 董庆华 1 武汉大学化学系 武汉大学化学系 Department of Chemistry, Wuhan University Department of Chemistry, Wuhan University 采用收集电极的电化学方法研究了Pt/TiO 2 上与丙酸光催化分解相偶合的阴极过程。在H + 离子作阴极去极化剂的体系中,当Pt/TiO 2 被光照时,其表面的阴极过程开始为光生电子的累积;然后是H + 离子的还原,在Pt/TiO 2 表面产生吸附氢;丙酸的光催化分解速度依赖于这些阴极过程。对此采用不同阴极去极化剂的对比实验得到了证实。 The cathodic process coupled with photocatalytic decomposition of propionic acid on Pt/TiO 2 was studied by electrochemical methods. The cathodic process was identified to be the accumulation of electrons followed by the formation of adsorbed hydrogen atoms on TiO 2 particles under illumination The rate of photocatalytic decomposition of propionic acid on Pt/TiO 2 depended on those cathodic processes and this correlation was evidenced by adding various cathodic depolarizers to this system. 光催化分解 Pt/Ti02 丙酸 阴极过程 photocatalytic decomposition Pt/TiO2 propionic acid cathodic process 国家自然科学基金(61672102) 1989-02-01 2021-04-01 2