A crown ether supramolecular host-guest complex with Keggin polyoxometalate: Synthesis, crystal structure and electrocatalytic performance for hydrogen evolution reaction

被引：23

作者：

Wang, Pai ^{[1
]}

Zhang, Hongxu ^{[1
]}

Wang, Peisen ^{[1
]}

Zha, Junjie ^{[1
]}

Gautam, Jagadis ^{[1
]}

Zhang, Hanzhi ^{[1
]}

Li, Rui ^{[1
]}

Zhang, Lu-nan ^{[1
]}

Diao, Guowang ^{[1
]}

Ni, Lubin ^{[1
]}

机构：

[1] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2022年 / 165卷

基金：

中国国家自然科学基金;

关键词：

Polyoxometalate; Supramolecular; Crown ether; Electrocatalysis; Hydrogen evolution reaction (HER); METAL-ORGANIC FRAMEWORKS; HYBRID;

D O I：

10.1016/j.catcom.2022.106446

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：

A new crown ether-polyoxometalate assembly [K(H24C12O6)]3[K(H24C12O6)(CH3CN)][SiMo12O40] (1) based on the Keggin-type polyanion [SiMo12O40]4- was successfully synthesized through one-pot strategy in acetonitrile solution. The polyanion is coordinated to two [K([18]-crown-6)]+ supramolecular cations via crown-K-O(POM) coordinate-covalent bonds, leading to the formation of a spindle-shaped discrete structure. Complex 1 exhibited good hydrogen evolution reaction (HER) activity in an acidic medium. Moreover, a small overpotential eta 10 of 120 mV and a Tafel slope of 112 mV dec- 1 were obtained. This crown ether-polyoxometalate hybrid electrocatalyst also presented excellent HER stability even after 2000 cycles of operation.

引用

页数：6

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