Metalloligand Hybrid Polyoxometalates for Efficient Selective Photocatalytic Oxidation of Sulfides to Sulfoxides under Visible-Light Irradiation

被引：20

作者：

Ji, Kaihui ^{[1
]}

Liu, Yanan ^{[1
]}

Luo, Yinghua ^{[1
]}

Zhang, Xue ^{[1
]}

Bai, Yufan ^{[1
]}

Yue, Hailong ^{[1
]}

Ma, Pengtao ^{[1
]}

Niu, Jingyang ^{[1
]}

Wang, Jingping ^{[1
]}

机构：

[1] Henan Univ, Coll Chem & Chem Engn, Henan Key Lab Polyoxometalate Chem, Kaifeng 475004, Henan, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2023年 / 127卷 / 01期

基金：

中国国家自然科学基金;

关键词：

METAL-ORGANIC FRAMEWORKS; AEROBIC OXIDATION; WATER; AMINES; ACID;

D O I：

10.1021/acs.jpcc.2c07333

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The development of novel high-efficiency photocatalysts to solve the bottleneck problems of low efficiency and harsh conditions of organic oxidation reactions is of vital significance. In this paper, a novel hybrid polyoxometalate (POM) crystal, (C2H8N)6[SiW11CdO39][Ru(bpy)(2)(dcbpy)]center dot DMF center dot 5.5H(2)O (RuCd-SiW), was synthesized by combining the metalloligand [Ru(bpy)2(dcbpy)] with the oxidation catalyst POM. The introduction of the metalloligand extended the light absorption range of RuCd-SiW to the visible region, while electrochemical measurements demonstrated its potential as an excellent photocatalyst. Under visible light (lambda > 400 nm) irradiation with O-2 as the sole oxidant, RuCd-SiW showed highly efficient photocatalytic activity for the selective oxidation of thioanisole to (methylsulfoxide)benzene with a yield of 99.5%, a turnover number of 497.5, and a turnover frequency of 103 h(-1). Particularly, the yield of (methylsulfoxide)benzene was still higher than 99% after five rounds of recycling, demonstrating its high stability and recyclability.

引用

页码：256 / 264

页数：9

共 57 条

[51] Direct evidence of charge separation in a metal-organic framework: efficient and selective photocatalytic oxidative coupling of amines via charge and energy transfer [J].