Chemical composition and surface roughness of AlOx-controlled activity of Pt/AlOx thin film catalysts for methanol oxidation reaction

Ying Chen; Jun Liu; Xiaohong Wang; Wei Wang; Zhigang Zeng; Zhiyu Hu

doi:10.1007/s10562-014-1331-4

Chemical composition and surface roughness of AlO_x-controlled activity of Pt/AlO_x thin film catalysts for methanol oxidation reaction

Ying Chen
, Jun Liu
, Xiaohong Wang
, Wei Wang
, Zhigang Zeng
, Zhiyu Hu

Department of Mechanical and Aerospace Engineering

Shanghai University
Shanghai Jiao Tong University

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

3 Scopus citations

Abstract

Chemical composition and surface roughness of AlO_x films were facilely controlled by manipulating O₂/Ar ratio during aluminum oxide sputter-deposition process. Pt/AlO_x catalyst synthesized with O₂/Ar ratio of 2% exhibits the highest roughness (8.55 nm) and lowest O/Al ratio (0.11), which showed the best catalytic activity with a methanol conversion rate of 92.5 % and a remarkable temperature rise of 12°C induced by exothermic reaction at 100°C. It was demonstrated that Pt/AlO_x catalysts had significant higher activity for methanol oxidation when the AlO_x was nonstoichiometric compared with its stoichiometric counterpart (Al₂O₃). The outstanding catalytic performance and novel nanostructure of the deposited Pt/AlO_x thin film catalyst endow it with great potential for developing next-generation energy conversion devices and combustible gas sensors.

Original language	English
Pages (from-to)	1696-1703
Number of pages	8
Journal	Catalysis Letters
Volume	144
Issue number	10
DOIs	https://doi.org/10.1007/s10562-014-1331-4
State	Published - Oct 2014

Keywords

Chemisorbed oxygen
Magnetron sputtering
O/ar ratio
Pt/AlO thin film catalyst
Surface roughness

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10.1007/s10562-014-1331-4

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title = "Chemical composition and surface roughness of AlOx-controlled activity of Pt/AlOx thin film catalysts for methanol oxidation reaction",

abstract = "Chemical composition and surface roughness of AlOx films were facilely controlled by manipulating O2/Ar ratio during aluminum oxide sputter-deposition process. Pt/AlOx catalyst synthesized with O2/Ar ratio of 2\% exhibits the highest roughness (8.55 nm) and lowest O/Al ratio (0.11), which showed the best catalytic activity with a methanol conversion rate of 92.5 \% and a remarkable temperature rise of 12°C induced by exothermic reaction at 100°C. It was demonstrated that Pt/AlOx catalysts had significant higher activity for methanol oxidation when the AlOx was nonstoichiometric compared with its stoichiometric counterpart (Al2O3). The outstanding catalytic performance and novel nanostructure of the deposited Pt/AlOx thin film catalyst endow it with great potential for developing next-generation energy conversion devices and combustible gas sensors.",

keywords = "Chemisorbed oxygen, Magnetron sputtering, O/ar ratio, Pt/AlO thin film catalyst, Surface roughness",

author = "Ying Chen and Jun Liu and Xiaohong Wang and Wei Wang and Zhigang Zeng and Zhiyu Hu",

note = "Publisher Copyright: {\textcopyright} Springer Science+Business Media 2014.",

year = "2014",

month = oct,

doi = "10.1007/s10562-014-1331-4",

language = "English",

volume = "144",

pages = "1696--1703",

journal = "Catalysis Letters",

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publisher = "Kluwer Academic Publishers",

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TY - JOUR

T1 - Chemical composition and surface roughness of AlOx-controlled activity of Pt/AlOx thin film catalysts for methanol oxidation reaction

AU - Chen, Ying

AU - Liu, Jun

AU - Wang, Xiaohong

AU - Wang, Wei

AU - Zeng, Zhigang

AU - Hu, Zhiyu

N1 - Publisher Copyright: © Springer Science+Business Media 2014.

PY - 2014/10

Y1 - 2014/10

N2 - Chemical composition and surface roughness of AlOx films were facilely controlled by manipulating O2/Ar ratio during aluminum oxide sputter-deposition process. Pt/AlOx catalyst synthesized with O2/Ar ratio of 2% exhibits the highest roughness (8.55 nm) and lowest O/Al ratio (0.11), which showed the best catalytic activity with a methanol conversion rate of 92.5 % and a remarkable temperature rise of 12°C induced by exothermic reaction at 100°C. It was demonstrated that Pt/AlOx catalysts had significant higher activity for methanol oxidation when the AlOx was nonstoichiometric compared with its stoichiometric counterpart (Al2O3). The outstanding catalytic performance and novel nanostructure of the deposited Pt/AlOx thin film catalyst endow it with great potential for developing next-generation energy conversion devices and combustible gas sensors.

AB - Chemical composition and surface roughness of AlOx films were facilely controlled by manipulating O2/Ar ratio during aluminum oxide sputter-deposition process. Pt/AlOx catalyst synthesized with O2/Ar ratio of 2% exhibits the highest roughness (8.55 nm) and lowest O/Al ratio (0.11), which showed the best catalytic activity with a methanol conversion rate of 92.5 % and a remarkable temperature rise of 12°C induced by exothermic reaction at 100°C. It was demonstrated that Pt/AlOx catalysts had significant higher activity for methanol oxidation when the AlOx was nonstoichiometric compared with its stoichiometric counterpart (Al2O3). The outstanding catalytic performance and novel nanostructure of the deposited Pt/AlOx thin film catalyst endow it with great potential for developing next-generation energy conversion devices and combustible gas sensors.

KW - Chemisorbed oxygen

KW - Magnetron sputtering

KW - O/ar ratio

KW - Pt/AlO thin film catalyst

KW - Surface roughness

UR - https://www.scopus.com/pages/publications/84919714976

U2 - 10.1007/s10562-014-1331-4

DO - 10.1007/s10562-014-1331-4

M3 - Article

AN - SCOPUS:84919714976

SN - 1011-372X

VL - 144

SP - 1696

EP - 1703

JO - Catalysis Letters

JF - Catalysis Letters

IS - 10

ER -

Chemical composition and surface roughness of AlO_x-controlled activity of Pt/AlO_x thin film catalysts for methanol oxidation reaction

Abstract

Keywords

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