Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18834
Title: Synthesis of fe-doped CeO 2 nanorods by a widely applicable coprecipitation route
Authors: Wang, Z
Xin, Y
Zhang, Z
Li, Q
Zhang, Y
Zhou, L 
Keywords: Cerium oxide
Chromium
Coprecipitation
Iron
Nanorod
Issue Date: 2011
Publisher: Elsevier
Source: Chemical engineering journal, 2011, v. 178, p. 436-442 How to cite?
Journal: Chemical engineering journal 
Abstract: Fe-doped CeO 2 solid solution nanorods were successfully prepared via a simple coprecipitation method without templates/surfactants at ambient temperature and pressure. The single crystalline nanorod structure was preserved after calcination at higher temperatures. The formation of the nanorod morphology strongly depends on Fe contents. Beyond the solid solution limit, only nanoparticles were observed. The morphology was also affected by precipitation agents, temperatures and aging times. The formation of the nanorods originates from the intrinsic anisotropy of Ce hydroxide. The dissolution/ recrystallization mechanism was thus proposed, in which the coexistent ammonia and/or Fe act as the capping agents for the formation of nanorods. Simultaneously, the enrichment of Fe on the surface results in the nanorods with round shape and sharp tips. The element-capped concept for the formation of the nanorod morphology can be extended to Cr-doped CeO 2.
URI: http://hdl.handle.net/10397/18834
ISSN: 1385-8947
DOI: 10.1016/j.cej.2011.10.006
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