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
收藏
页码：2437 / 2449
页数：13
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