Preparation and electrocatalytic properties of triuranium octoxide supported on reduced graphene oxide
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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.
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Preparation and electrocatalytic properties of triuranium octoxide supported on reduced graphene oxide
)
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.
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Acknowledgements
This work is supported by the Ministry of Science and Technology of China (Project No. 2011CB933003) and the National Natural Science Foundation of China (Project Nos. 11179011, 21125103, and 91333105).
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