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Published on: April 27, 2018
Mild Synthesis of Pt/SnO2 /Graphene Nanocomposites with Remarkably Enhanced Ethanol Electro-oxidation Activity and
Yunteng Qu1, Yunzhi Gao2, Long Wang1
1Institute of Advanced Chemical Power Sources, School of Chemical Engineering and Technology, Harbin Institute of Technology, 92 West Da-Zhi Street, Harbin 150001 (P.R. China).
Abstract:
We have designed a new Pt/SnO2 /graphene nanomaterial by using L-arginine as a linker; this material shows the unique Pt-around-SnO2 structure. The Sn(2+) cations reduce graphene oxide (GO), leading to the in situ formation of SnO2 /graphene hybrids. L-Arginine is used as a linker and protector to induce the in situ growth of Pt nanoparticles (NPs) connected with SnO2 NPs and impede the agglomeration of Pt NPs. The obtained Pt/SnO2 /graphene composites exhibit superior electrocatalytic activity and stability for the ethanol oxidation reaction as compared with the commercial Pt/C catalyst owing to the close-connected structure between the Pt NPs and SnO2 NPs. This work should have a great impact on the rational design of future metal-metal oxide nanostructures with high catalytic activity and stability for fuel cell systems.
