Controlled synthesis and properties of porous Cu/CeO2 microspheres

Yao, Xiang and Yang, Xiaodan and Yu, Ranbo and Xu, Pengfei and Chen, Jun and Xing, Xianran (2015) Controlled synthesis and properties of porous Cu/CeO2 microspheres. Materials Research Bulletin, 61. pp. 22-25. ISSN 0025-5408

Abstract

Porous Cu/CeO2 microspheres were synthesized in a system of (NH4)2 Ce(NO3)6/CuSO4ethanol (EtOH)/ H2ON,N-dimethylformanide (DMF) via a low-temperature hydrothermal route as well as a subsequent calcination. DMF played an important role in both the crystallization of Cu-doped Ce(COOH)3 precursor and the formation of the precursor microspheres. The size and morphology control of the precursor could be achieved by adjusting the synthesis factors including acidity and temperature. BET measurement indicated that the Cu/CeO2 microspheres possessed pretty high specific surface areas up to 169 m2 g-1 and multiple pore systems with the pore diameter of about 1.0 nm, 4.9 nm, and 5.9 nm, respectively. Although the doping content of Cu was pretty low, the copper ions were successfully incorporated into the fluorite structure of CeO2, which made these porous Cu/CeO2 microspheres showing much improved oxygen storage capacity (OSC). The novel porous Cu/CeO2 microspheres might be a promising catalyst for selective CO oxidation.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 14 Jun 2017 23:21
Last Modified: 14 Jun 2017 23:21
Uncontrolled Keywords: A.Composites; B. SolvothermalC; C. Raman spectroscopy; X-ray diffraction; A.Composites; B. SolvothermalC; Controlled synthesis; High specific surface area; Low temperature hydrothermal routes; Morphology control; Oxygen storage capacity; Selective CO oxidation; Hydrothermal routes; Ore Treatment and Metal Refining; Copper; Thermodynamics; Rubber and Elastomers; Atomic and Molecular Physics;
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1016/j.materresbull.2014.09.083
URI: http://eprints.usq.edu.au/id/eprint/31941

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