Catalytic reduction of oxygen and hydrogen peroxide by nanoporous gold

Roswitha Zeis; Tang Lei; Karl Sieradzki; Joshua Snyder; Jonah Erlebacher

doi:10.1016/j.jcat.2007.10.017

Catalytic reduction of oxygen and hydrogen peroxide by nanoporous gold

Roswitha Zeis, Tang Lei, Karl Sieradzki, Joshua Snyder, Jonah Erlebacher

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

207 Scopus citations

Abstract

Nanoporous gold (NPG) made by dealloying silver/gold alloys is a mesoporous metal combining high surface area and high conductivity. Recently, NPG has been shown to exhibit some of the high catalytic activity previously associated only with supported gold nanoparticles. Here we describe how NPG acts as a catalyst for the oxygen reduction reaction in both gas phase (in fuel cells) and aqueous environments (using rotating disk electrochemistry). NPG was found to reduce oxygen via an effectively 4-four electron route comprised of a first reduction of oxygen to hydrogen peroxide, and then an unusually active further catalytic reduction of hydrogen peroxide to water.

Original language	English (US)
Pages (from-to)	132-138
Number of pages	7
Journal	Journal of Catalysis
Volume	253
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2007.10.017
State	Published - Jan 1 2008

Keywords

Fuel cells
Nanoporous gold
Oxygen reduction reaction

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry

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abstract = "Nanoporous gold (NPG) made by dealloying silver/gold alloys is a mesoporous metal combining high surface area and high conductivity. Recently, NPG has been shown to exhibit some of the high catalytic activity previously associated only with supported gold nanoparticles. Here we describe how NPG acts as a catalyst for the oxygen reduction reaction in both gas phase (in fuel cells) and aqueous environments (using rotating disk electrochemistry). NPG was found to reduce oxygen via an effectively 4-four electron route comprised of a first reduction of oxygen to hydrogen peroxide, and then an unusually active further catalytic reduction of hydrogen peroxide to water.",

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author = "Roswitha Zeis and Tang Lei and Karl Sieradzki and Joshua Snyder and Jonah Erlebacher",

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AU - Zeis, Roswitha

AU - Lei, Tang

AU - Sieradzki, Karl

AU - Snyder, Joshua

AU - Erlebacher, Jonah

N1 - Funding Information: We gratefully acknowledge support for this work from the U.S. Department of Energy, Office of Basic Energy Sciences under grant DE-FG02-05ER15727.

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AB - Nanoporous gold (NPG) made by dealloying silver/gold alloys is a mesoporous metal combining high surface area and high conductivity. Recently, NPG has been shown to exhibit some of the high catalytic activity previously associated only with supported gold nanoparticles. Here we describe how NPG acts as a catalyst for the oxygen reduction reaction in both gas phase (in fuel cells) and aqueous environments (using rotating disk electrochemistry). NPG was found to reduce oxygen via an effectively 4-four electron route comprised of a first reduction of oxygen to hydrogen peroxide, and then an unusually active further catalytic reduction of hydrogen peroxide to water.

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Catalytic reduction of oxygen and hydrogen peroxide by nanoporous gold

Abstract

Keywords

ASJC Scopus subject areas

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