Atomic Layer Deposition of Platinum Catalysts on Nanowire Surfaces for Photoelectrochemical Water Reduction

被引：247

作者：

Dasgupta, Neil P. ^{[1
]}

Liu, Chong ^{[1
,2
]}

Andrews, Sean ^{[1
,2
]}

Prinz, Fritz B. ^{[3
]}

Yang, Peidong ^{[1
,2
,4
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

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

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2013年 / 135卷 / 35期

关键词：

HYDROGEN-EVOLUTION; ARTIFICIAL PHOTOSYNTHESIS; PHOTOVOLTAIC APPLICATIONS; SOLAR-CELLS; NANOPARTICLES; PHOTOCATHODE; ABSORPTION; ARRAYS; TIO2; FUEL;

D O I：

10.1021/ja405680p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photocathodic hydrogen evolution reaction (HER) from p-type Si nanowire (NW) arrays was evaluated using platinum deposited by atomic layer deposition (ALD) as a HER cocatalyst. ALD of Pt on the NW surface led to a highly conformal coating of nanoparticles with sizes ranging from 0.5 to 3 nm, allowing for precise control of the Pt loading in deep submonolayer quantities. The catalytic performance was measured using as little as 1 cycle of Pt ALD, which corresponded to a surface mass loading of similar to 10 ng/cm(2). The quantitative exploration of the lower limits of Pt cocatalyst loading reported here, and its application to high-surface-area NW photoelectrodes, establish a general approach for minimizing the cost of precious-metal cocatalysts for efficient and affordable solar-to-fuel applications.

引用

页码：12932 / 12935

页数：4

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