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CeO2 nanosheets were directly synthesized by a precipitation process with the aid of 1-butyl-3-methyl-imidazolium ionic liquids at room temperature. The anion species and the concentration of the room temperature ionic liquids (RTILs) have a great influence on the morphology of the resulting products. The as-prepared CeO2 is irregular and agglomerated seriously in the absence of RTILs, while it changes from nanocube to nanosheet with increasing the RTIL concentration or decreasing the polarity and hydrophilicity in the orders [Bmim]Cl > [Bmim]Br > [Bmim]BF4 > [Bmim]PF6. The CeO2 nanocubes have relatively uniform grain size distribution with size of 4.5–6.4 nm, and the nanosheets are assembled by a great deal of nanocrystalline whose length and width extend to hundreds of nanometers. The as-synthesized CeO2 exhibits an excellent removal capacity for the organic pollutant Congo red dye, indicating its potential use in practical wastewater treatment.


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Synthesis of CeO2 nanosheets with a room temperature ionic liquid assisted method

Show Author's information Ting CHENaZhixiang XIEaWeihui JIANGa( )Wan JIANGb( )Xiaojun ZHANGaJianmin LIUa
School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science & Engineering, Donghua University, Shanghai 201620, China

Abstract

CeO2 nanosheets were directly synthesized by a precipitation process with the aid of 1-butyl-3-methyl-imidazolium ionic liquids at room temperature. The anion species and the concentration of the room temperature ionic liquids (RTILs) have a great influence on the morphology of the resulting products. The as-prepared CeO2 is irregular and agglomerated seriously in the absence of RTILs, while it changes from nanocube to nanosheet with increasing the RTIL concentration or decreasing the polarity and hydrophilicity in the orders [Bmim]Cl > [Bmim]Br > [Bmim]BF4 > [Bmim]PF6. The CeO2 nanocubes have relatively uniform grain size distribution with size of 4.5–6.4 nm, and the nanosheets are assembled by a great deal of nanocrystalline whose length and width extend to hundreds of nanometers. The as-synthesized CeO2 exhibits an excellent removal capacity for the organic pollutant Congo red dye, indicating its potential use in practical wastewater treatment.

Keywords:

ceria, nanocrystalline, ionic liquid, room temperature, catalysis
Received: 17 November 2015 Revised: 22 December 2015 Accepted: 07 January 2016 Published: 12 May 2016 Issue date: June 2021
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Publication history

Received: 17 November 2015
Revised: 22 December 2015
Accepted: 07 January 2016
Published: 12 May 2016
Issue date: June 2021

Copyright

© The author(s) 2016

Acknowledgements

This work was supported by National Natural Science Foundation of China (Nos. 51402135, 51432004), the Projects of Jiangxi Provincial Department of Science and Technology (Nos. 20142BAB216006, 20142BAB216007), and the Science Foundation of Jiangxi Provincial Department of Education (Nos. GJJ150919, GJJ150887).

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