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通过在线质谱观察中间产物,证明染料敏化光催化的多种机制。

Observation of intermediates by online mass spectrometry to demonstrate the multiple mechanisms of dye-sensitized photocatalysis.

机构信息

Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, P. R. China.

出版信息

Chem Commun (Camb). 2021 Apr 25;57(32):3921-3924. doi: 10.1039/d1cc00908g. Epub 2021 Mar 23.

DOI:10.1039/d1cc00908g
PMID:33871525
Abstract

Online mass spectrometry was applied to reveal multiple mechanisms of visible-light irradiated dye-sensitized photocatalysis for o-phenylenediamine oxidation. The reactants, products and short-lived intermediates were recorded and dynamically tracked. Dimer and unexpected trimer intermediates were observed to deduce the stepwise aerobic photooxidation mechanism with multiple routes, which was supported by theoretical calculations.

摘要

在线质谱分析被应用于揭示可见光辐照染料敏化光催化氧化邻苯二胺的多种反应机制。记录并动态跟踪反应物、产物和短寿命中间体。观察到二聚体和意外的三聚体中间体,推断出具有多条途径的逐步需氧光氧化机制,这得到了理论计算的支持。

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