Metallic mesoporous nanocomposites for electrocatalysis

Yi Ding; Mingwei Chen; Jonah Erlebacher

doi:10.1021/ja0320119

Metallic mesoporous nanocomposites for electrocatalysis

Yi Ding, Mingwei Chen, Jonah Erlebacher

Research output: Contribution to journal › Article › peer-review

409 Citations (Scopus)

Abstract

We describe the fabrication, characterization, and applications of ultrathin, free-standing mesoporous metal membranes uniformly decorated with catalytically active nanoparticles. Platinum-plated nanoporous gold leaf (Pt-NPG) made by confining a plating reaction to occur within the pores of dealloyed silver/gold leaf is 100 nm thick and contains an extremely high, uniform dispersion of 3 nm diameter catalytic particles. This nanostructured composite holds promise as a prototypical member of a new class of fuel cell electrodes, showing good electrocatalytic performance at low platinum loading (less than 0.05 mg cm^-2), while also maintaining long-term stability against coarsening and aggregation of catalytic nanoparticles.

Original language	English
Pages (from-to)	6876-6877
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	126
Issue number	22
DOIs	https://doi.org/10.1021/ja0320119
Publication status	Published - 2004 Jun 9

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja0320119

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AB - We describe the fabrication, characterization, and applications of ultrathin, free-standing mesoporous metal membranes uniformly decorated with catalytically active nanoparticles. Platinum-plated nanoporous gold leaf (Pt-NPG) made by confining a plating reaction to occur within the pores of dealloyed silver/gold leaf is 100 nm thick and contains an extremely high, uniform dispersion of 3 nm diameter catalytic particles. This nanostructured composite holds promise as a prototypical member of a new class of fuel cell electrodes, showing good electrocatalytic performance at low platinum loading (less than 0.05 mg cm-2), while also maintaining long-term stability against coarsening and aggregation of catalytic nanoparticles.

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Metallic mesoporous nanocomposites for electrocatalysis

Abstract

ASJC Scopus subject areas

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