Synthesis, characterization and electrocatalytic properties of two new open Wells-Dawson-type tungstosilicates

被引：3

作者：

Li, Meng-Xuan ^{[1
]}

Zhang, Yang ^{[1
]}

Zhu, Zai-Ming ^{[1
]}

Su, Fang ^{[1
]}

Zhang, Lan-Cui ^{[1
]}

Sang, Xiao-Jing ^{[1
]}

机构：

[1] Liaoning Normal Univ, Sch Chem & Chem Engn, Dalian 116029, Peoples R China

来源：

JOURNAL OF COORDINATION CHEMISTRY | 2020年 / 73卷 / 17-19期

基金：

中国国家自然科学基金;

关键词：

Tungstosilicates; open Wells-Dawson structure; crystal structure; electrocatalytic reduction; electrocatalytic water oxidation; WATER OXIDATION; SILICOTUNGSTATES SYNTHESIS; POLYOXOMETALATE;

D O I：

10.1080/00958972.2020.1811857

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two new open Wells-Dawson-type polyoxometalates (POMs), K7H2[K(Co(H2O)(4))(2)Co(H2O)(2)(Si2W18O66)]center dot 22H(2)O and K7H2[{C(NH2)(3)} (Co(H2O)(4))(2)Co(H2O)(2)(Si2W18O66)]center dot 20H(2)O (abbreviated asK-Co(3)Si(2)W(18)andC(NH2)(3)-Co3Si2W18), were synthesized by conventional synthesis and characterized by X-ray single crystal and powder diffraction (XRSCD and XRPD), IR and UV-vis absorption spectra. XRSCD analysis reveals that two tungstosilicates have similar anionic structures with an open Wells-Dawson anion [Si2W18O66](16-)and three Co(2+)ions. The electrocatalytic activities of both compounds toward the reduction of H(2)O(2)and NaNO(2)were studied. Also their electrocatalytic water oxidation performance was evaluated at neutral pH.

引用

页码：2437 / 2449

页数：13

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