Structure control of Pt-Sn bimetallic catalysts supported on highly oriented pyrolytic graphite (HOPG)

Yunxi Yao; Qiang Fu; Zhen Zhang; Hui Zhang; Teng Ma; Dali Tan; Xinhe Bao

doi:10.1016/j.apsusc.2007.12.007

Structure control of Pt-Sn bimetallic catalysts supported on highly oriented pyrolytic graphite (HOPG)

Yunxi Yao, Qiang Fu, Zhen Zhang, Hui Zhang, Teng Ma, Dali Tan, Xinhe Bao

CAS - Dalian Institute of Chemical Physics

科研成果: 期刊稿件 › 文章 › 同行评审

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摘要

PtSn bimetallic catalyst nanoparticles were grown on highly oriented pyrolytic graphite (HOPG) surfaces using the sequential deposition and co-deposition of Pt and Sn. The surface morphology and composition of the prepared PtSn catalysts were investigated by scanning tunneling microscopy and CO adsorption experiment. It is found that the structure of the PtSn catalysts can be controlled by the deposition process. The deposition sequence of 1st Pt and 2nd Sn and co-deposition of Pt and Sn produce Sn-shell and Pt-core structure, while the deposition sequence of 1st Sn and 2nd Pt leads to the growth of individual Pt and Sn particles. The formation of various PtSn bimetallic structures was attributed to the different surface energy of Pt and Sn, and the interaction of the metals with the HOPG surfaces.

源语言	英语
页（从-至）	3808-3812
页数	5
期刊	Applied Surface Science
卷	254
期	13
DOI	https://doi.org/10.1016/j.apsusc.2007.12.007
出版状态	已出版 - 30 4月 2008
已对外发布	是

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title = "Structure control of Pt-Sn bimetallic catalysts supported on highly oriented pyrolytic graphite (HOPG)",

abstract = "PtSn bimetallic catalyst nanoparticles were grown on highly oriented pyrolytic graphite (HOPG) surfaces using the sequential deposition and co-deposition of Pt and Sn. The surface morphology and composition of the prepared PtSn catalysts were investigated by scanning tunneling microscopy and CO adsorption experiment. It is found that the structure of the PtSn catalysts can be controlled by the deposition process. The deposition sequence of 1st Pt and 2nd Sn and co-deposition of Pt and Sn produce Sn-shell and Pt-core structure, while the deposition sequence of 1st Sn and 2nd Pt leads to the growth of individual Pt and Sn particles. The formation of various PtSn bimetallic structures was attributed to the different surface energy of Pt and Sn, and the interaction of the metals with the HOPG surfaces.",

keywords = "Bimetallic catalyst, CO adsorption, Electrocatalyst, HOPG, PtSn, STM",

author = "Yunxi Yao and Qiang Fu and Zhen Zhang and Hui Zhang and Teng Ma and Dali Tan and Xinhe Bao",

year = "2008",

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doi = "10.1016/j.apsusc.2007.12.007",

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T1 - Structure control of Pt-Sn bimetallic catalysts supported on highly oriented pyrolytic graphite (HOPG)

AU - Yao, Yunxi

AU - Fu, Qiang

AU - Zhang, Zhen

AU - Zhang, Hui

AU - Ma, Teng

AU - Tan, Dali

AU - Bao, Xinhe

PY - 2008/4/30

Y1 - 2008/4/30

N2 - PtSn bimetallic catalyst nanoparticles were grown on highly oriented pyrolytic graphite (HOPG) surfaces using the sequential deposition and co-deposition of Pt and Sn. The surface morphology and composition of the prepared PtSn catalysts were investigated by scanning tunneling microscopy and CO adsorption experiment. It is found that the structure of the PtSn catalysts can be controlled by the deposition process. The deposition sequence of 1st Pt and 2nd Sn and co-deposition of Pt and Sn produce Sn-shell and Pt-core structure, while the deposition sequence of 1st Sn and 2nd Pt leads to the growth of individual Pt and Sn particles. The formation of various PtSn bimetallic structures was attributed to the different surface energy of Pt and Sn, and the interaction of the metals with the HOPG surfaces.

AB - PtSn bimetallic catalyst nanoparticles were grown on highly oriented pyrolytic graphite (HOPG) surfaces using the sequential deposition and co-deposition of Pt and Sn. The surface morphology and composition of the prepared PtSn catalysts were investigated by scanning tunneling microscopy and CO adsorption experiment. It is found that the structure of the PtSn catalysts can be controlled by the deposition process. The deposition sequence of 1st Pt and 2nd Sn and co-deposition of Pt and Sn produce Sn-shell and Pt-core structure, while the deposition sequence of 1st Sn and 2nd Pt leads to the growth of individual Pt and Sn particles. The formation of various PtSn bimetallic structures was attributed to the different surface energy of Pt and Sn, and the interaction of the metals with the HOPG surfaces.

KW - Bimetallic catalyst

KW - CO adsorption

KW - Electrocatalyst

KW - HOPG

KW - PtSn

KW - STM

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DO - 10.1016/j.apsusc.2007.12.007

M3 - 文章

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SN - 0169-4332

VL - 254

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EP - 3812

JO - Applied Surface Science

JF - Applied Surface Science

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ER -

Structure control of Pt-Sn bimetallic catalysts supported on highly oriented pyrolytic graphite (HOPG)

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