Formation of amorphous Pt oxides: Characterization and their catalysis

Satoshi Kameoka; Masahiko Shimoda; Yoshitaka Matsushita; Yoshiyuki Yamashita; Yoshio Katsuya; Masahiko Tanaka; An Pang Tsai

doi:10.2320/matertrans.MF201410

Formation of amorphous Pt oxides: Characterization and their catalysis

Satoshi Kameoka, Masahiko Shimoda, Yoshitaka Matsushita, Yoshiyuki Yamashita, Yoshio Katsuya, Masahiko Tanaka, An Pang Tsai

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

3 Citations (Scopus)

Abstract

Amorphous Pt oxides (am-PtO_x) were formed by the leaching of copper from a Cu₃Pt alloy in concentrated HNO₃ at 323K for 12 h. The resulting am-PtO_x was characterized using synchrotron X-ray powder diffraction, hard X-ray photoelectron spectroscopy, thermal analysis (TGDTA, TPD) and the BET method. This material had a high specific surface area with micropores (61.7m²/g) and decomposed to form Pt and O₂ at approximately 720 K. The catalytic performance of the am-PtO_x during CO oxidation was superior to that of a conventional Pt black catalyst. This study demonstrated a novel method of preparing am-PtO_x with applications as a catalyst.

Original language	English
Pages (from-to)	490-494
Number of pages	5
Journal	Materials Transactions
Volume	56
Issue number	4
DOIs	https://doi.org/10.2320/matertrans.MF201410
Publication status	Published - 2015

Keywords

Amorphous platinum (Pt) oxides
Carbon monoxide (CO) oxidation
Catalytic material
Cu<inf>3</inf>Pt
Leaching
PtO<inf>x</inf>

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2320/matertrans.MF201410

Cite this

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title = "Formation of amorphous Pt oxides: Characterization and their catalysis",

abstract = "Amorphous Pt oxides (am-PtOx) were formed by the leaching of copper from a Cu3Pt alloy in concentrated HNO3 at 323K for 12 h. The resulting am-PtOx was characterized using synchrotron X-ray powder diffraction, hard X-ray photoelectron spectroscopy, thermal analysis (TGDTA, TPD) and the BET method. This material had a high specific surface area with micropores (61.7m2/g) and decomposed to form Pt and O2 at approximately 720 K. The catalytic performance of the am-PtOx during CO oxidation was superior to that of a conventional Pt black catalyst. This study demonstrated a novel method of preparing am-PtOx with applications as a catalyst.",

keywords = "Amorphous platinum (Pt) oxides, Carbon monoxide (CO) oxidation, Catalytic material, Cu<inf>3</inf>Pt, Leaching, PtO<inf>x</inf>",

author = "Satoshi Kameoka and Masahiko Shimoda and Yoshitaka Matsushita and Yoshiyuki Yamashita and Yoshio Katsuya and Masahiko Tanaka and Tsai, {An Pang}",

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T1 - Formation of amorphous Pt oxides

T2 - Characterization and their catalysis

AU - Kameoka, Satoshi

AU - Shimoda, Masahiko

AU - Matsushita, Yoshitaka

AU - Yamashita, Yoshiyuki

AU - Katsuya, Yoshio

AU - Tanaka, Masahiko

AU - Tsai, An Pang

PY - 2015

Y1 - 2015

N2 - Amorphous Pt oxides (am-PtOx) were formed by the leaching of copper from a Cu3Pt alloy in concentrated HNO3 at 323K for 12 h. The resulting am-PtOx was characterized using synchrotron X-ray powder diffraction, hard X-ray photoelectron spectroscopy, thermal analysis (TGDTA, TPD) and the BET method. This material had a high specific surface area with micropores (61.7m2/g) and decomposed to form Pt and O2 at approximately 720 K. The catalytic performance of the am-PtOx during CO oxidation was superior to that of a conventional Pt black catalyst. This study demonstrated a novel method of preparing am-PtOx with applications as a catalyst.

AB - Amorphous Pt oxides (am-PtOx) were formed by the leaching of copper from a Cu3Pt alloy in concentrated HNO3 at 323K for 12 h. The resulting am-PtOx was characterized using synchrotron X-ray powder diffraction, hard X-ray photoelectron spectroscopy, thermal analysis (TGDTA, TPD) and the BET method. This material had a high specific surface area with micropores (61.7m2/g) and decomposed to form Pt and O2 at approximately 720 K. The catalytic performance of the am-PtOx during CO oxidation was superior to that of a conventional Pt black catalyst. This study demonstrated a novel method of preparing am-PtOx with applications as a catalyst.

KW - Amorphous platinum (Pt) oxides

KW - Carbon monoxide (CO) oxidation

KW - Catalytic material

KW - Cu<inf>3</inf>Pt

KW - Leaching

KW - PtO<inf>x</inf>

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JO - Materials Transactions

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ER -

Formation of amorphous Pt oxides: Characterization and their catalysis

Abstract

Keywords

ASJC Scopus subject areas

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