Cobalt Polyoxometalates as Heterogeneous Water Oxidation Catalysts
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- 作者：Joaqu铆n Soriano-L贸pez ; Sara Goberna-Ferr贸n ; Laura Vigara ; Jorge J. Carb贸 ; Josep M. Poblet ; Jos茅 Ram贸n Gal谩n-Mascar贸s
- 刊名：Inorganic Chemistry
- 出版年：2013
- 出版时间：May 6, 2013
- 年：2013
- 卷：52
- 期：9
- 页码：4753-4755
- 全文大小：180K
- 年卷期：v.52,no.9(May 6, 2013)
- ISSN：1520-510X
文摘
An insoluble salt of the water oxidation catalyst [Co9(H2O)6(OH)3(HPO4)2(PW9O34)3]16鈥?/sup> (Co9) has been used to modify amorphous carbon paste electrodes. The catalytic activity of this polyoxometalate is maintained in the solid state. Good catalytic rates are reached at reasonable overpotentials. As a heterogeneous catalyst, Co9 shows a remarkable long-term stability in turnover conditions. The oxygen evolution rate remains constant for hours without the appearance of any sign of fatigue or decomposition in a large pH range, including acidic conditions, where metal oxides are unstable.