Synthesis of mono-dispersed ceria hollow nanospheres by a hydrothermal method

Xueliang Jiang; Jiao Zhang; Lu Yu; Ruiqi Chen; Xiong Xu

Synthesis of mono-dispersed ceria hollow nanospheres by a hydrothermal method

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Author(s): Xueliang Jiang ¹ ; Jiao Zhang ¹ ; Lu Yu ¹ ; Ruiqi Chen ¹ ; Xiong Xu ¹
- Affiliations: 1: School of Material Science and Engineering, Wuhan Institute of Technology, Wuhan, People's Republic of China
Source: Volume 11, Issue 3, March 2016, p. 137 – 141
DOI: 10.1049/mnl.2015.0455 , Online ISSN 1750-0443

Received 05/08/2015, Accepted 15/12/2015, Revised 13/12/2015, Published 01/03/2016

Mono-dispersed ceria (CeO₂) hollow nanospheres about 400 nm have been prepared via a facile one-step hydrothermal method, wherein cerium nitrate hexahydrate (Ce(NO₃)₃·6H₂O) was used as cerium sources with the assistance of polyvinylpyrrolidone (PVP) in the ethylene glycol aqueous solution. X-ray diffraction, X-ray photoelectron spectra, scanning electron microscope, transmission electron microscope, nitrogen adsorption–desorption and Fourier transform infrared results indicate that PVP can improve the dispersion and control the morphology and sizes of CeO₂ hollow nanospheres as a surfactant, and the internal diameter of CeO₂ hollow nanosphere gradually increases with reaction time. Based on the time-dependent experiment, the formation mechanism was proposed and discussed. These CeO₂ hollow nanospheres show an excellent adsorption rate of heavy metal ions for Cr(VI) and the adsorption rate is about 70%. The CeO₂ hollow nanospheres also had exhibited superior performance in the degradation of methyl orange dye.

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Synthesis of mono-dispersed ceria hollow nanospheres by a hydrothermal method

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