物理化学学报 >> 1995, Vol. 11 >> Issue (11): 1014-1019.doi: 10.3866/PKU.WHXB19951111

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咔唑氮氧自由基的光催化氧化产生及其机理

王素华,陈德文   

  1. 中国科学院化学研究所，分子动态与稳态结构国家重点实验室，北京 100080
  • 收稿日期:1995-02-24 修回日期:1995-04-19 发布日期:1995-11-15
  • 通讯作者: 陈德文

Study on the Generated Mechanism of Carbazole Nitroxyl Radical υiα Photocatalysis Oxidation of Carbazole

Wang Su-Hua,Chen De-Wen   

  1. Institute of Chemistry,Academia Sinica,Beijing 100080,China
  • Received:1995-02-24 Revised:1995-04-19 Published:1995-11-15
  • Contact: Chen De-Wen

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摘要：

用ESR方法研究了吸附在半导体微粒表面的咔唑光催化氧化过程，得到较为稳定的咔唑氮氧自由基，其g值为2．0060, 半衰期约为10～20min．实验表明，无论是光催化氧化还是光化夺氢后进行氧化，咔唑氮氧自由基的生成过程均为退化分支链反应过程．

关键词: 咔唑, 光催化, 氮氧自由基, 链反应, ESR

Abstract:

ESR and spin trapping-ESR method was used to study the photocatalytic oxidation of carbazole at surface of CdS particle. Carbazole nitroxyl radical was first obtained and its haif period is about 10 ~ 20min , g value is 2.0060. The resuts also show that the production of carbazole nitroxyl radical may be described by degenerated branch chain reaction scheme.

Key words: Carbazole, Photocatalysis, Nitroxyl radical, Chain reaction, ESR