Construction of mono- and multimolecular layers with electron transfer mediation function and catalytic activity for hydrogen evolution on a hydrogen-terminated Si(111) surface via Si-C bond

被引：17

作者：

Masuda, Takuya ^{[1
]}

Shimazu, Katsuaki ^{[1
]}

Uosaki, Kohei ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Sci, Div Chem, Phys Chem Lab, Sapporo, Hokkaido 0600810, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 29期

关键词：

D O I：

10.1021/jp8006188

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：

Organic molecular layers with viologen moiety (i.e., electron acceptor) were constructed on a hydrogen-terminated Si(111) surface via a Si-C bond. Electrochemical characteristics after each synthetic process were measured, and electron mediation capability of the viologen moiety was demonstrated. Incorporation of platinum particles on the viologen-modified Si(111) surface was proved to enhance the hydrogen evolution reaction (HER) rate. Further improvement of the HER rate was achieved by the modification with viologen/Pt multilayers. Photoelectrochemical HER at the p-Si(111) electrode was also significantly accelerated by the modification with mono- and multiviologen/Pt layers.

引用

收藏

页码：10923 / 10930

页数：8

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