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

Abstract

Here, the study of CO oxidation on Pt(110) 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 PtO 2 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/O 2 ratio increases, the production of CO 2 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.

Authors:
 [1];  [1];  [1];  [2];  [3];  [3];  [3];  [3];  [4];  [5];  [5];  [6];  [6];  [1]
  1. Gwangju Inst. of Science and Technology (Korea, Republic of). Dept. of Physics and Photon Science
  2. Korea Basic Science Inst., Daejeon (Korea, Republic of). Advanced Nan-Surface Research Group
  3. Keio Univ., Kanagawa (Japan). Dept. of Chemistry
  4. Highg Energy Accelerator Research Organization, Tsukuba (Japan). Inst. of Materials Structure Science
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
  6. Sorbonne Univ., Paris (France). Lab. of Chemical Physics
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Research Foundation of Korea (NRF)
OSTI Identifier:
1418308
Grant/Contract Number:  
AC02-05CH11231; E36800
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 29; Journal Issue: 46; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; CO oxidation; ambient pressure XPS; Pt(1 1 0); surface oxide

Citation Formats

Yu, Youngseok, Koh, Yoobin Esther, Lim, Hojoon, Jeong, Beomgyun, Isegawa, Kazuhisa, Kim, Daehyun, Ueda, Kohei, Kondoh, Hiroshi, Mase, Kazuhiko, Crumlin, Ethan J., Ross, Philip N., Gallet, Jean-Jacques, Bournel, Fabrice, and Mun, Bongjin Simon. Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS. United States: N. p., 2017. Web. doi:10.1088/1361-648x/aa889e.
Yu, Youngseok, Koh, Yoobin Esther, Lim, Hojoon, Jeong, Beomgyun, Isegawa, Kazuhisa, Kim, Daehyun, Ueda, Kohei, Kondoh, Hiroshi, Mase, Kazuhiko, Crumlin, Ethan J., Ross, Philip N., Gallet, Jean-Jacques, Bournel, Fabrice, & Mun, Bongjin Simon. Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS. United States. doi:10.1088/1361-648x/aa889e.
Yu, Youngseok, Koh, Yoobin Esther, Lim, Hojoon, Jeong, Beomgyun, Isegawa, Kazuhisa, Kim, Daehyun, Ueda, Kohei, Kondoh, Hiroshi, Mase, Kazuhiko, Crumlin, Ethan J., Ross, Philip N., Gallet, Jean-Jacques, Bournel, Fabrice, and Mun, Bongjin Simon. Fri . "Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS". United States. doi:10.1088/1361-648x/aa889e. https://www.osti.gov/servlets/purl/1418308.
@article{osti_1418308,
title = {Chemical states of surface oxygen during CO oxidation on Pt(1 1 0) surface revealed by ambient pressure XPS},
author = {Yu, Youngseok and Koh, Yoobin Esther and Lim, Hojoon and Jeong, Beomgyun and Isegawa, Kazuhisa and Kim, Daehyun and Ueda, Kohei and Kondoh, Hiroshi and Mase, Kazuhiko and Crumlin, Ethan J. and Ross, Philip N. and Gallet, Jean-Jacques and Bournel, Fabrice and Mun, Bongjin Simon},
abstractNote = {Here, the study of CO oxidation on Pt(110) 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.},
doi = {10.1088/1361-648x/aa889e},
journal = {Journal of Physics. Condensed Matter},
number = 46,
volume = 29,
place = {United States},
year = {2017},
month = {10}
}

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