Controllable synthesis of spherical cerium oxide particles

Hepeng Zhang; Wenbin Wang; Baoliang Zhang; Huan Li; Qiuyu Zhang

doi:10.1039/c6ra01680d

Controllable synthesis of spherical cerium oxide particles

Hepeng Zhang, Wenbin Wang, Baoliang Zhang, Huan Li, Qiuyu Zhang

School of Chemistry and Chemical Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Spherical CeO₂ submicron particles were synthesized by a facile PVP-assisted hydrothermal method. By the analysis of XRD, FESEM, TEM and selected area electron diffraction (SAED), we confirmed that the as-obtained spherical CeO₂ particles were formed by the oriented aggregation of fluorite CeO₂ nanocrystals. The formation mechanism was discussed by varying synthetic parameters such as reaction temperature, and the concentration of cerium salt. In our synthetic process, Ce(NO₃)₃·6H₂O was first hydrolyzed to rod-like organic cerium salt by the assistance of PVP, then the organic cerium salt was decomposed into CeO₂ nanocrystals. Finally, spherical CeO₂ particles were formed by the oriented aggregation of these CeO₂ nanocrystals through the interaction between the same crystal planes of different nanocrystals and the assistance of PVP.

Original language	English
Pages (from-to)	30956-30962
Number of pages	7
Journal	RSC Advances
Volume	6
Issue number	37
DOIs	https://doi.org/10.1039/c6ra01680d
State	Published - 2016

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title = "Controllable synthesis of spherical cerium oxide particles",

abstract = "Spherical CeO2 submicron particles were synthesized by a facile PVP-assisted hydrothermal method. By the analysis of XRD, FESEM, TEM and selected area electron diffraction (SAED), we confirmed that the as-obtained spherical CeO2 particles were formed by the oriented aggregation of fluorite CeO2 nanocrystals. The formation mechanism was discussed by varying synthetic parameters such as reaction temperature, and the concentration of cerium salt. In our synthetic process, Ce(NO3)3·6H2O was first hydrolyzed to rod-like organic cerium salt by the assistance of PVP, then the organic cerium salt was decomposed into CeO2 nanocrystals. Finally, spherical CeO2 particles were formed by the oriented aggregation of these CeO2 nanocrystals through the interaction between the same crystal planes of different nanocrystals and the assistance of PVP.",

author = "Hepeng Zhang and Wenbin Wang and Baoliang Zhang and Huan Li and Qiuyu Zhang",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016.",

year = "2016",

doi = "10.1039/c6ra01680d",

language = "英语",

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TY - JOUR

T1 - Controllable synthesis of spherical cerium oxide particles

AU - Zhang, Hepeng

AU - Wang, Wenbin

AU - Zhang, Baoliang

AU - Li, Huan

AU - Zhang, Qiuyu

PY - 2016

Y1 - 2016

N2 - Spherical CeO2 submicron particles were synthesized by a facile PVP-assisted hydrothermal method. By the analysis of XRD, FESEM, TEM and selected area electron diffraction (SAED), we confirmed that the as-obtained spherical CeO2 particles were formed by the oriented aggregation of fluorite CeO2 nanocrystals. The formation mechanism was discussed by varying synthetic parameters such as reaction temperature, and the concentration of cerium salt. In our synthetic process, Ce(NO3)3·6H2O was first hydrolyzed to rod-like organic cerium salt by the assistance of PVP, then the organic cerium salt was decomposed into CeO2 nanocrystals. Finally, spherical CeO2 particles were formed by the oriented aggregation of these CeO2 nanocrystals through the interaction between the same crystal planes of different nanocrystals and the assistance of PVP.

AB - Spherical CeO2 submicron particles were synthesized by a facile PVP-assisted hydrothermal method. By the analysis of XRD, FESEM, TEM and selected area electron diffraction (SAED), we confirmed that the as-obtained spherical CeO2 particles were formed by the oriented aggregation of fluorite CeO2 nanocrystals. The formation mechanism was discussed by varying synthetic parameters such as reaction temperature, and the concentration of cerium salt. In our synthetic process, Ce(NO3)3·6H2O was first hydrolyzed to rod-like organic cerium salt by the assistance of PVP, then the organic cerium salt was decomposed into CeO2 nanocrystals. Finally, spherical CeO2 particles were formed by the oriented aggregation of these CeO2 nanocrystals through the interaction between the same crystal planes of different nanocrystals and the assistance of PVP.

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DO - 10.1039/c6ra01680d

M3 - 文章

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Controllable synthesis of spherical cerium oxide particles

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