期刊
JACS AU
卷 1, 期 8, 页码 1141-1146出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacsau.1c00168
关键词
lignin; phenol recovery; photocatalysis; oxygen atom transfer; flow operation
资金
- NSFC [21971065]
- STCSM [20XD1421500, 20JC1416800, 18JC1415600]
- Innovative Research Team of High-Level Local Universities in Shanghai [SSMU-ZLCX20180501]
- Fundamental Research Funds for the Central Universities
The uranyl-photocatalyzed hydrolysis of diaryl ethers has been shown to produce two types of phenols at room temperature under normal pressure. The process involves a single electron transfer followed by an oxygen atom transfer process. The use of O-18 labeling has confirmed water as the oxygen source, and the method shows potential for ecofriendly phenol recovery.
Uranyl-photocatalyzed hydrolysis of diaryl ethers has been established to achieve two types of phenols at room temperature under normal pressure. The single electron transfer process was disclosed by a radical quenching experiment and Stern-Volmer analysis between diphenyl ether and uranyl cation catalyst, followed by oxygen atom transfer process between radical cation of diphenyl ether and uranyl peroxide species. The O-18-labeling experiment precisely demonstrates that the oxygen source is water. Further application in template substrates of 4-O-5 linkages from lignin and 30-fold efficiency of flow operation display the potential application for phenol recovery via an ecofriendly and low-energy consumption protocol.
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