Palladium Nanoparticles Supported on Vertically Oriented Reduced Graphene Oxide for Methanol Electro-Oxidation
作者： Liming Yang , Yanhong Tang , Shenglian Luo , Chengbin Liu , Hejie Song
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摘要: Reduced graphene oxide (rGO) is a promising support material for nanosized electrocatalysts. However, the conventional stacking arrangement of rGO sheets confines electrocatalysts between layers, which decreases number catalytic sites substantially. We report here facile synthesis vertically oriented reduced (VrGO) through cyclic voltammetric electrolysis (GO) in presence Na2 PdCl4 . Experiments without Pd nanoparticles or with low loading amount results deposition parallel to electrodes. The vertical orientation Pd/rGO nanoflakes causes remarkable enhancement activity toward methanol electro-oxidation. mass (620.1 A gPd (-1) ) Pd/VrGO 1.9 and 6.2 times that Pd/flat-lying (331.8 commercial Pd/C (100.5 ), respectively. Furthermore, catalyst shows excellent resistance CO poisoning. This work provides simple wet-chemical method VrGO preparation.
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