Gold nanoparticles embedded within mesoporous cobalt oxide enhance electrochemical oxygen evolution

Xunyu Lu; Yun Hau Ng; Chuan Zhao

doi:10.1002/cssc.201300975

Gold nanoparticles embedded within mesoporous cobalt oxide enhance electrochemical oxygen evolution

Xunyu Lu, Yun Hau Ng, Chuan Zhao^*

^*Corresponding author for this work

Chemical Engineering

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

100 Scopus citations

Abstract

Gold nanoparticles incorporated in mesoporous cobalt oxides (Au/mCo ₃O₄) are fabricated by a nanocasting method using porous silica as the hard template. The Au/mCo₃O₄ material exhibits enhanced catalytic activity towards water oxidation compared to bulk mCo₃O₄ in both alkaline and neutral solutions. The superior catalytic performance is ascribed to the synergistic effect of electronegative metal gold, which facilitates the generation of active Co ^IV sites, as well as the large specific surface area and the preferential exposure of catalytic active crystalline lattice.

Original language	English (US)
Pages (from-to)	82-86
Number of pages	5
Journal	CHEMSUSCHEM
Volume	7
Issue number	1
DOIs	https://doi.org/10.1002/cssc.201300975
State	Published - Jan 2014

Keywords

Cobalt oxides
Electrocatalysis
Gold nanoparticles
Mesoporous materials
Water splitting

ASJC Scopus subject areas

Environmental Chemistry
General Chemical Engineering
General Materials Science
General Energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/cssc.201300975

Cite this

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title = "Gold nanoparticles embedded within mesoporous cobalt oxide enhance electrochemical oxygen evolution",

abstract = "Gold nanoparticles incorporated in mesoporous cobalt oxides (Au/mCo 3O4) are fabricated by a nanocasting method using porous silica as the hard template. The Au/mCo3O4 material exhibits enhanced catalytic activity towards water oxidation compared to bulk mCo3O4 in both alkaline and neutral solutions. The superior catalytic performance is ascribed to the synergistic effect of electronegative metal gold, which facilitates the generation of active Co IV sites, as well as the large specific surface area and the preferential exposure of catalytic active crystalline lattice.",

keywords = "Cobalt oxides, Electrocatalysis, Gold nanoparticles, Mesoporous materials, Water splitting",

author = "Xunyu Lu and Ng, {Yun Hau} and Chuan Zhao",

year = "2014",

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doi = "10.1002/cssc.201300975",

language = "English (US)",

volume = "7",

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AU - Lu, Xunyu

AU - Ng, Yun Hau

AU - Zhao, Chuan

PY - 2014/1

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N2 - Gold nanoparticles incorporated in mesoporous cobalt oxides (Au/mCo 3O4) are fabricated by a nanocasting method using porous silica as the hard template. The Au/mCo3O4 material exhibits enhanced catalytic activity towards water oxidation compared to bulk mCo3O4 in both alkaline and neutral solutions. The superior catalytic performance is ascribed to the synergistic effect of electronegative metal gold, which facilitates the generation of active Co IV sites, as well as the large specific surface area and the preferential exposure of catalytic active crystalline lattice.

AB - Gold nanoparticles incorporated in mesoporous cobalt oxides (Au/mCo 3O4) are fabricated by a nanocasting method using porous silica as the hard template. The Au/mCo3O4 material exhibits enhanced catalytic activity towards water oxidation compared to bulk mCo3O4 in both alkaline and neutral solutions. The superior catalytic performance is ascribed to the synergistic effect of electronegative metal gold, which facilitates the generation of active Co IV sites, as well as the large specific surface area and the preferential exposure of catalytic active crystalline lattice.

KW - Cobalt oxides

KW - Electrocatalysis

KW - Gold nanoparticles

KW - Mesoporous materials

KW - Water splitting

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JO - CHEMSUSCHEM

JF - CHEMSUSCHEM

IS - 1

ER -

Gold nanoparticles embedded within mesoporous cobalt oxide enhance electrochemical oxygen evolution

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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