title: Surface reaction network of CO oxidation on CeO2/Au(110) inverse model catalysts.
abstract: CeO2/Au(110) inverse model catalysts were prepared and their activity toward the adsorption and co-adsorption of O2, CO, CO2and water was studied by means of X-ray photoelectron spectroscopy, low energy electron diffraction, thermal desorption spectra and temperature-programmed reaction spectra. The Au surface of CeO2/Au(110) inverse model catalysts molecularly adsorbs CO, CO2and water, and the polycrystalline CeO2surface of CeO2/Au(110) inverse model catalysts molecularly adsorbs O2, and molecularly and reactively adsorbs CO, CO2and water. By controllably preparing co-adsorbed surface species on CeO2/Au(110) inverse model catalysts, we successfully identified various surface reaction pathways of CO oxidation to produce CO2with different barriers both on the CeO2surface and at the Au-CeO2interface, including CO oxidation by various oxygen species, and water/hydroxyl group-involved CO oxidation. These results establish a surface reaction network of CO oxidation catalyzed by Au/CeO2catalysts, greatly advancing the fundamental understandings of catalytic CO oxidation reactions.
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, P. R. China. huangwx@ustc.edu.cn.
authors.forename: Liangbing
authors.initials: L
authors.lastname: Ding
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, P. R. China. huangwx@ustc.edu.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Xiong
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, P. R. China. huangwx@ustc.edu.cn.
authors.forename: Yuekang
authors.initials: Y
authors.lastname: Jin
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, P. R. China. huangwx@ustc.edu.cn.
authors.forename: Zhengming
authors.identifier: http://orcid.org/0000-0002-4814-8755
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, P. R. China. huangwx@ustc.edu.cn.
authors.forename: Guanghui
authors.initials: G
authors.lastname: Sun
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, P. R. China. huangwx@ustc.edu.cn.
authors.forename: Weixin
authors.initials: W
authors.lastname: Huang