The synthesis of CeO₂ nanospheres with different hollowness and size induced by copper doping

In this paper, copper-doped ceria oxides with different hollowness and size are fabricated by changing the Cu(2+) doping concentration in the mixed water-glycol system. Results show that the copper-doped CeO₂ oxides undergo a morphology transformation from the solid nanospheres to core-shell, then t...

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Bibliographic Details
Published in:Nanoscale 2014-09, Vol.6 (18), p.10693-10700
Main Authors: Liu, Wei, Liu, Xiufang, Feng, Lijun, Guo, Jinxin, Xie, Anran, Wang, Shuping, Zhang, Jingcai, Yang, Yanzhao
Format: Article
Language:English
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Summary:In this paper, copper-doped ceria oxides with different hollowness and size are fabricated by changing the Cu(2+) doping concentration in the mixed water-glycol system. Results show that the copper-doped CeO₂ oxides undergo a morphology transformation from the solid nanospheres to core-shell, then to hollow nanospheres with the increase of the Cu(2+) doping concentration. The corresponding size becomes smaller during this transfer process. The Cu(2+) doping induced acceleration in the nucleation and growth process is further investigated. The resultant Cu(2+)-doped CeO2 oxides exhibit enhanced CO conversion performance and better reduction behaviors.
ISSN:2040-3372
DOI:10.1039/c4nr02485k