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Nano Research

Article Title

Preparation and electrocatalytic properties of triuranium octoxide supported on reduced graphene oxide

Authors

Dongliang Gao, Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
Zhenyu Zhang, Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China
Li Ding, Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China
Juan Yang, Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China
Yan Li, Key Laboratory for the Physics and Chemistry of Nanodevices, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China

Keywords

triuranium octoxide, reduced graphene oxides, oxygen reduction reaction, electrocatalysis

Abstract

Triuranium octoxide-reduced graphene oxide (U3O8/rGO) hybrids have been prepared by a two-step solution-phase method. The presence of GO is essential in order to obtain pure phase U3O8. The U3O8/rGO hybrids exhibited excellent electrocatalytic activity for the oxygen reduction reaction. The electron transfer number was calculated to be ~3.9 at –0.7 V (vs. Ag/AgCl) from the slope of the Koutecky–Levich plots. The U3O8/rGO hybrids were more stable than commercial Pt/C catalysts. Furthermore, when methanol was present, the U3O8/rGO hybrids still retained high activity. In addition, the U3O8/rGO hybrids can also catalyze the reduction of hydrogen peroxide.

Graphical Abstract

Publisher

Tsinghua University Press

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