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15. Facile Synthesis of CeO2 Nanosheets via a Parallel Flow Precipitation Route.

Author

Ran, Jianfeng, Yao, Jiashu, Li, Tingting, Lv, Peng, Yin, Shaohua, Zhang, Libo, Xu, Zhanyu, and Zhang, Guoguang

Abstract

In this work, CeO2 nanosheet was facile synthesized via a parallel flow precipitation route, using cerium chloride trihydrate and sodium carbonate as the cerium source, without using any surfactants and templates. The results show that the CeO2 nanosheets have a median particle size (D50) of 118 nm, a range (R) of 0.69, a surface area of 3.01 m2/g, a pore diameter of 27.96 nm, a pore volume of 0.02 cm3/g, and a loss on ignition (L.O.I.) of < 1%. Furthermore, the activation energy of CeO2 nanocrystal growth during the calcination process is about 30.5 kJ/mol, indicating that the controlling link of the crystallite growth is the interfacial chemical reaction. Ostwald ripening (OR) mechanism has a synergistic effect with Oriented attachment (OA) mechanism during the process of nucleation and growth of Ce2(CO3)3 crystal grains. [ABSTRACT FROM AUTHOR]

Published
2023
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19. Facile Synthesis of CeO2Nanosheets via a Parallel Flow Precipitation Route

Author

Ran, Jianfeng, Yao, Jiashu, Li, Tingting, Lv, Peng, Yin, Shaohua, Zhang, Libo, Xu, Zhanyu, and Zhang, Guoguang

Abstract

In this work, CeO2nanosheet was facile synthesized via a parallel flow precipitation route, using cerium chloride trihydrate and sodium carbonate as the cerium source, without using any surfactants and templates. The results show that the CeO2nanosheets have a median particle size (D50) of 118 nm, a range (R) of 0.69, a surface area of 3.01 m2/g, a pore diameter of 27.96 nm, a pore volume of 0.02 cm3/g, and a loss on ignition (L.O.I.) of < 1%. Furthermore, the activation energy of CeO2nanocrystal growth during the calcination process is about 30.5 kJ/mol, indicating that the controlling link of the crystallite growth is the interfacial chemical reaction. Ostwald ripening (OR) mechanism has a synergistic effect with Oriented attachment (OA) mechanism during the process of nucleation and growth of Ce2(CO3)3crystal grains.

Published
2023
Full Text
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