Enhanced electrochemical performances of nanoporous gold by surface modification of titanium dioxide nanoparticles

Akira Kudo; Takeshi Fujita; Xingyou Lang; Luyang Chen; Mingwei Chen

doi:10.2320/matertrans.MAW201014

Enhanced electrochemical performances of nanoporous gold by surface modification of titanium dioxide nanoparticles

Akira Kudo, Takeshi Fujita, Xingyou Lang, Luyang Chen, Mingwei Chen

Advanced Institute for Materials Research (AIMR)

Tohoku University

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

13 Citations (Scopus)

Abstract

We reported novel nanoporous gold (NPG) with surface modified by TiO ₂ nanoparticles. The as-fabricated sample showed larger effective area than bare NPG. Microstructure characterization demonstrated that the TiO2 nanoparticles effectively suppressed the coarsening of the nanoporous structure by the reaction with gold ligaments. The resultant porous nanocomposite with rough ligament surfaces was proofed to spontaneously possess enhanced catalytic performance towards methanol oxidation. This result would yield an effective and inexpensive method to improve NPG s catalytic activity.

Original language	English
Pages (from-to)	1566-1569
Number of pages	4
Journal	Materials Transactions
Volume	51
Issue number	9
DOIs	https://doi.org/10.2320/matertrans.MAW201014
Publication status	Published - 2010 Sept

Keywords

Dealloying
Methanol oxidation
Nanoporous metal
Scanning electron microscope (sem)
Transmission electron microscope (tem)

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10.2320/matertrans.MAW201014

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title = "Enhanced electrochemical performances of nanoporous gold by surface modification of titanium dioxide nanoparticles",

abstract = "We reported novel nanoporous gold (NPG) with surface modified by TiO 2 nanoparticles. The as-fabricated sample showed larger effective area than bare NPG. Microstructure characterization demonstrated that the TiO2 nanoparticles effectively suppressed the coarsening of the nanoporous structure by the reaction with gold ligaments. The resultant porous nanocomposite with rough ligament surfaces was proofed to spontaneously possess enhanced catalytic performance towards methanol oxidation. This result would yield an effective and inexpensive method to improve NPG s catalytic activity.",

keywords = "Dealloying, Methanol oxidation, Nanoporous metal, Scanning electron microscope (sem), Transmission electron microscope (tem)",

author = "Akira Kudo and Takeshi Fujita and Xingyou Lang and Luyang Chen and Mingwei Chen",

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language = "English",

volume = "51",

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AU - Kudo, Akira

AU - Fujita, Takeshi

AU - Lang, Xingyou

AU - Chen, Luyang

AU - Chen, Mingwei

PY - 2010/9

Y1 - 2010/9

N2 - We reported novel nanoporous gold (NPG) with surface modified by TiO 2 nanoparticles. The as-fabricated sample showed larger effective area than bare NPG. Microstructure characterization demonstrated that the TiO2 nanoparticles effectively suppressed the coarsening of the nanoporous structure by the reaction with gold ligaments. The resultant porous nanocomposite with rough ligament surfaces was proofed to spontaneously possess enhanced catalytic performance towards methanol oxidation. This result would yield an effective and inexpensive method to improve NPG s catalytic activity.

AB - We reported novel nanoporous gold (NPG) with surface modified by TiO 2 nanoparticles. The as-fabricated sample showed larger effective area than bare NPG. Microstructure characterization demonstrated that the TiO2 nanoparticles effectively suppressed the coarsening of the nanoporous structure by the reaction with gold ligaments. The resultant porous nanocomposite with rough ligament surfaces was proofed to spontaneously possess enhanced catalytic performance towards methanol oxidation. This result would yield an effective and inexpensive method to improve NPG s catalytic activity.

KW - Dealloying

KW - Methanol oxidation

KW - Nanoporous metal

KW - Scanning electron microscope (sem)

KW - Transmission electron microscope (tem)

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SP - 1566

EP - 1569

JO - Materials Transactions

JF - Materials Transactions

IS - 9

ER -

Enhanced electrochemical performances of nanoporous gold by surface modification of titanium dioxide nanoparticles

Abstract

Keywords

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