Hydrogen Evolution on Supported Incomplete Cubane-type [Mo3S4]4+ Electrocatalysts

被引：204

作者：

Jaramillo, Thomas F. ^{[3
]}

Bonde, Jacob ^{[1
]}

Zhang, Jingdong ^{[2
]}

Ooi, Bee-Lean ^{[2
]}

Andersson, Klas ^{[1
]}

Ulstrup, Jens ^{[2
]}

Chorkendorff, Ib ^{[1
]}

机构：

[1] Tech Univ Denmark, CINF, Dept Phys, DK-2800 Lyngby, Denmark

[2] Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark

[3] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 45期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.1021/jp802695e

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：

Electrocatalytic properties of biomimetic supported incomplete cubane-type [Mo3S4](4+) clusters are investigated. The activity toward the hydrogen evolution reaction (HER) is evaluated on both a high surface area gas diffusion electrode in a membrane electrode assembly and on highly orientated pyrolytic graphite (HOPG) supports. Sub-monolayers of the clusters were imaged by means of scanning tunnelling microscopy (STM) prior to electrochemical characterization. This enabled the quantification of the activity on a per cluster basis for the HER and the comparison of the activity with other HER catalysts. We find that the HER activity of the [Mo3S4](4+) is comparable with that of the edge sites of MoS2. The supported [Mo3S4](4+) molecules were also characterized by X-ray photoelectron spectroscopy (XPS), and the observed deterioration in electrocatalytic activity with time was assigned to slow [Mo3S4](4+) cathodic desorption from the catalyst support.

引用

页码：17492 / 17498

页数：7

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