Citation: Wang Yong-Ming, Chen Qing-De, Shen Xing-Hai. One-step synthesis of hollow UO₂ nanospheres via radiolytic reduction of ammonium uranyl tricarbonate[J]. Chinese Chemical Letters, ;2017, 28(2): 197-200. doi: 10.1016/j.cclet.2016.06.035 shu

One-step synthesis of hollow UO₂ nanospheres via radiolytic reduction of ammonium uranyl tricarbonate

Beijing National Laboratory for Molecular Sciences, Fundamental Science on Radiochemistry and Radiation Chemistry Laboratory, Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

Corresponding author: Chen Qing-De, qdchen@pku.edu.cn Shen Xing-Hai, xshen@pku.edu.cn
Received Date: 16 May 2016
Revised Date: 4 June 2016
Accepted Date: 17 June 2016
Available Online: 27 February 2017

Figures(4)

Black precipitates were successfully obtained by radiolytic reduction of ammonium uranyl tricarbonate in the aqueous solution of HCOONH₄ by one step. TEM, SAED, EDS, and XRD analysis indicated that the precipitates consist of hollow UO₂ nanospheres (φ:30-50 nm, wall thickness:8-15 nm, and cavity diameter:10-20 nm). The effect of HCOONH₄ concentration, irradiation time and dose rate on the morphology, and size of nanospheres was investigated. Then, a gas-bubble template mechanism was proposed.
- Uranium dioxide,
- Hollow nanospheres,
- Ammonium uranyl tricarbonate (AUC),
- Hydrated electron (e_aq^-),
- γ-Irradiation
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沈阳化工大学材料科学与工程学院沈阳 110142

One-step synthesis of hollow UO2 nanospheres via radiolytic reduction of ammonium uranyl tricarbonate

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One-step synthesis of hollow UO₂ nanospheres via radiolytic reduction of ammonium uranyl tricarbonate