title: Facile and Mild Strategy to Construct Mesoporous CeO2-CuO Nanorods with Enhanced Catalytic Activity toward CO Oxidation.
abstract: CeO2-CuO nanorods with mesoporous structure were synthesized by a facile and mild strategy, which involves an interfacial reaction between Ce2(SO4)3 precursor and NaOH ethanol solution at room temperature to obtain mesoporous CeO2 nanorods, followed by a solvothermal treatment of as-prepared CeO2 and Cu(CH3COO)2. Upon solvothermal treatment, CuO species is highly dispersed onto the CeO2 nanorod surface to form CeO2-CuO composites, which still maintain the mesoporous feature. A preliminary CO catalytic oxidation study demonstrated that the CeO2-CuO samples exhibited strikingly high catalytic activity, and a high CO conversion rate was observed without obvious loss in activity even after thermal treatment at a high temperature of 500 °C. Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and hydrogen temperature-programmed reduction (H2-TPR) analysis revealed that there is a strong interaction between CeO2 and CuO. Moreover, it was found that the introduction of CuO species into CeO2 generates oxygen vacancies, which is highly likely to be responsible for high catalytic activity toward CO oxidation of the mesoporous CeO2-CuO nanorods.
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong 255022, China.
authors.forename: Guozhu
authors.initials: G
authors.lastname: Chen
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong 255022, China.
authors.forename: Qihui
authors.initials: Q
authors.lastname: Xu
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong 255022, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong 255022, China.
authors.forename: Cuncheng
authors.initials: C
authors.lastname: Li
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong 255022, China.
authors.forename: Taizhong
authors.initials: T
authors.lastname: Huang
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong 255022, China.
authors.forename: Guoxin
authors.initials: G
authors.lastname: Sun
authors.affiliation: Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong 255022, China.
authors.forename: Shuxiang
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Institut National de la Recherche Scientifique (INRS) , 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada.
authors.forename: Dongling
authors.initials: D
authors.lastname: Ma
authors.affiliation: Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR) , 3 Research Link, Singapore.
authors.forename: Xu
authors.initials: X
authors.lastname: Li
keywords: bimetal oxide; catalysis; ceria; composites; interfacial reaction