某些含氮有机物光催化氧化产生的自由基中间体

波谱学杂志 ›› 1994, Vol. 11 ›› Issue (2): 141-147.

某些含氮有机物光催化氧化产生的自由基中间体

陈次平¹, 陆道惠², 徐广智²

1. 中国科学院感光化学研究所, 北京 100101;
2. 中国科学院化学研究所, 北京 100081

收稿日期:1993-06-14 修回日期:1993-08-23 出版日期:1994-06-05 发布日期:2018-01-20
基金资助:
国家自然科学基金资助项目,并得到北京分子动态和稳态结构化学国家实验室资助

RADICAL INTERMEDIATES GENERATED IN PHOTOCATALYTIC OXIDATION OF SOME ORGANIC COMPOUNDS CONTAINING NITROGEN ATOMS

Chen Ciping¹, Lu Daohui², Xu Guangzhi²

1. Institute of photographic chemistry, The Chinese Academy or Sciences, Beijing 100101;
2. Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080

Received:1993-06-14 Revised:1993-08-23 Online:1994-06-05 Published:2018-01-20

摘要/Abstract

摘要： 本文用自旋捕捉技术与ESR相结合的方法研究了某些含氮有机物TiO₂光催化降解的过程中形成的活泼中间体.选择的化合物中有丁胺、戊胺、庚胺、六氢吡啶、吡啶、2-甲基吡啶、2,6-二甲基吡啶,这些分子中的氮原子分别作为初级脂肪胺、饱和环中的二级胺以及芳环中的三级胺出现,实验中观察到N-中心自由基及C-中心自由基与自旋捕捉剂加合物的ESR信号,表明这些自由基参与这些化合物光降解的初始过程,对深入了解其光降机理是有意义的.

关键词: 含氮有机物, 光催化氧化, 自由基中间体

Abstract: Radical intermediates generated in photocatalytic oxidation of some organic com-pounds containing nitrogen atoms such as butylamine,piperidine, pyridine etc,were detected by spin trapping technique. The ESR spectra of N-eentered radical adduct and C-centered radical adduct were observed.Experiment results reveal that these radicals are participants in the inital steps of photodegradation of thesc com-pounds,A mechanism which is consistent with the observation of these radical species is elucidated.

Key words: Organic compounds containing nitrogen atams, Photocatalytic oxidation, Radical Intermediates

陈次平, 陆道惠, 徐广智. 某些含氮有机物光催化氧化产生的自由基中间体[J]. 波谱学杂志, 1994, 11(2): 141-147.

Chen Ciping, Lu Daohui, Xu Guangzhi. RADICAL INTERMEDIATES GENERATED IN PHOTOCATALYTIC OXIDATION OF SOME ORGANIC COMPOUNDS CONTAINING NITROGEN ATOMS[J]. Chinese Journal of Magnetic Resonance, 1994, 11(2): 141-147.

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