Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS

Youngseok Yu; Yoobin Esther Koh; Hojoon Lim; Beomgyun Jeong; Kazuhisa Isegawa; Daehyun Kim; Kohei Ueda; Hiroshi Kondoh; Kazuhiko Mase; Ethan J. Crumlin; Philip N. Ross; Jean Jacques Gallet; Fabrice Bournel; Bongjin Simon Mun

doi:10.1088/1361-648X/aa889e

Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS

Youngseok Yu, Yoobin Esther Koh, Hojoon Lim, Beomgyun Jeong, Kazuhisa Isegawa, Daehyun Kim, Kohei Ueda, Hiroshi Kondoh, Kazuhiko Mase, Ethan J. Crumlin, Philip N. Ross, Jean Jacques Gallet, Fabrice Bournel, Bongjin Simon Mun

化学科

研究成果: Article › 査読

24 被引用数 (Scopus)

抄録

The study of CO oxidation on Pt(1 1 0) surface is revisited using ambient pressure x-ray photoemission spectroscopy. When the surface temperature reaches the activation temperature for CO oxidation under elevated pressure conditions, both the α-phase of PtO₂ oxide and chemisorbed oxygen are formed simultaneously on the surface. Due to the exothermic nature of CO oxidation, the temperature of the Pt surface increases as CO oxidation takes place. As the CO/O₂ ratio increases, the production of CO₂ increases continuously and the surface temperature also increases. Interestingly, within the diffusion limited regions, the amount of surface oxide changes little while the chemisorbed oxygen is reduced.

本文言語	English
論文番号	464001
ジャーナル	Journal of Physics Condensed Matter
巻	29
号	46
DOI	https://doi.org/10.1088/1361-648X/aa889e
出版ステータス	Published - 2017 10月 20

ASJC Scopus subject areas

材料科学一般
凝縮系物理学

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10.1088/1361-648X/aa889e

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Yu, Y., Koh, Y. E., Lim, H., Jeong, B., Isegawa, K., Kim, D., Ueda, K., Kondoh, H., Mase, K., Crumlin, E. J., Ross, P. N., Gallet, J. J., Bournel, F., & Mun, B. S. (2017). Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS. Journal of Physics Condensed Matter, 29(46), 記事 464001. https://doi.org/10.1088/1361-648X/aa889e

@article{03e700afb8204f64b11f08cc12c886fb,

title = "Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS",

abstract = "The study of CO oxidation on Pt(1 1 0) surface is revisited using ambient pressure x-ray photoemission spectroscopy. When the surface temperature reaches the activation temperature for CO oxidation under elevated pressure conditions, both the α-phase of PtO2 oxide and chemisorbed oxygen are formed simultaneously on the surface. Due to the exothermic nature of CO oxidation, the temperature of the Pt surface increases as CO oxidation takes place. As the CO/O2 ratio increases, the production of CO2 increases continuously and the surface temperature also increases. Interestingly, within the diffusion limited regions, the amount of surface oxide changes little while the chemisorbed oxygen is reduced.",

keywords = "CO oxidation, Pt(1 1 0), ambient pressure XPS, surface oxide",

author = "Youngseok Yu and Koh, \{Yoobin Esther\} and Hojoon Lim and Beomgyun Jeong and Kazuhisa Isegawa and Daehyun Kim and Kohei Ueda and Hiroshi Kondoh and Kazuhiko Mase and Crumlin, \{Ethan J.\} and Ross, \{Philip N.\} and Gallet, \{Jean Jacques\} and Fabrice Bournel and Mun, \{Bongjin Simon\}",

note = "Publisher Copyright: {\textcopyright} 2017 IOP Publishing Ltd.",

year = "2017",

month = oct,

day = "20",

doi = "10.1088/1361-648X/aa889e",

language = "English",

volume = "29",

journal = "Journal of Physics Condensed Matter",

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publisher = "IOP Publishing Ltd.",

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TY - JOUR

T1 - Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS

AU - Yu, Youngseok

AU - Koh, Yoobin Esther

AU - Lim, Hojoon

AU - Jeong, Beomgyun

AU - Isegawa, Kazuhisa

AU - Kim, Daehyun

AU - Ueda, Kohei

AU - Kondoh, Hiroshi

AU - Mase, Kazuhiko

AU - Crumlin, Ethan J.

AU - Ross, Philip N.

AU - Gallet, Jean Jacques

AU - Bournel, Fabrice

AU - Mun, Bongjin Simon

PY - 2017/10/20

Y1 - 2017/10/20

N2 - The study of CO oxidation on Pt(1 1 0) surface is revisited using ambient pressure x-ray photoemission spectroscopy. When the surface temperature reaches the activation temperature for CO oxidation under elevated pressure conditions, both the α-phase of PtO2 oxide and chemisorbed oxygen are formed simultaneously on the surface. Due to the exothermic nature of CO oxidation, the temperature of the Pt surface increases as CO oxidation takes place. As the CO/O2 ratio increases, the production of CO2 increases continuously and the surface temperature also increases. Interestingly, within the diffusion limited regions, the amount of surface oxide changes little while the chemisorbed oxygen is reduced.

AB - The study of CO oxidation on Pt(1 1 0) surface is revisited using ambient pressure x-ray photoemission spectroscopy. When the surface temperature reaches the activation temperature for CO oxidation under elevated pressure conditions, both the α-phase of PtO2 oxide and chemisorbed oxygen are formed simultaneously on the surface. Due to the exothermic nature of CO oxidation, the temperature of the Pt surface increases as CO oxidation takes place. As the CO/O2 ratio increases, the production of CO2 increases continuously and the surface temperature also increases. Interestingly, within the diffusion limited regions, the amount of surface oxide changes little while the chemisorbed oxygen is reduced.

KW - CO oxidation

KW - Pt(1 1 0)

KW - ambient pressure XPS

KW - surface oxide

UR - https://www.scopus.com/pages/publications/85038892083

UR - https://www.scopus.com/inward/citedby.url?scp=85038892083&partnerID=8YFLogxK

U2 - 10.1088/1361-648X/aa889e

DO - 10.1088/1361-648X/aa889e

M3 - Article

C2 - 29057751

AN - SCOPUS:85038892083

SN - 0953-8984

VL - 29

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 46

M1 - 464001

ER -

Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS

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