Citation: Kun Gao, Yi-Yang Zhu, Da-Qing Tong, Li Tian, Zhao-Hui Wang, Xiao-Zu Wang. Hydrothermal synthesis of single-crystal CeCO₃OH and their thermal conversion to CeO₂[J]. Chinese Chemical Letters, ;2014, 25(2): 383-386. shu

Hydrothermal synthesis of single-crystal CeCO₃OH and their thermal conversion to CeO₂

Kun Gao ^a ,
Yi-Yang Zhu ^a ,
Da-Qing Tong ^a ,
Li Tian ^a ,
Zhao-Hui Wang ^a,b ,
Xiao-Zu Wang ^a,,

1.
a College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China;
2.
b State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

Corresponding author: Xiao-Zu Wang,
Received Date: 10 August 2013
Available Online: 26 September 2013
Fund Project: This work was supported financially by the Program for Innovative Research Team in Jiangsu Province (No. SZK [2011]87) (No. SZK [2011]87)Special Research Foundation of Young teachers of Nanjing University of Technology (No. 39701007). (No. SZT[2011]43)

Hexagonal single-crystalline cerium carbonate hydroxide (CeCO₃OH) precursors with dendrite morphologies have been synthesized by a facile hydrothermal method at 180 ℃ using CeCl₃·7H₂O as the cerium source, triethylenetetramine as both an alkaline and carbon source, with triethylenetetramine also playing an important role in the formation of the dendrite structure. Polycrystalline ceria (CeO₂) have been obtained by calcining the precursor at 500 ℃ for 4 h. The morphology of the precursor was partly maintained during the heating process. The optical absorption spectra indicate the CeO₂ nano/microstructures have a direct band gap of 2.92 eV, which is lower than values of the bulk powder due to the quantum size effect. The high absorption in the UV region for CeO₂ nano/microstructure indicated that this material was expected to be used as UV-blocking materials.
- CeCO₃OH,
- Hydrothermal,
- Cerium carbonate hydroxide,
- Nanostructures
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Hydrothermal synthesis of single-crystal CeCO3OH and their thermal conversion to CeO2

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Hydrothermal synthesis of single-crystal CeCO₃OH and their thermal conversion to CeO₂