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Title
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Anodic platinum dissolution, entrapping by amine functionalized-reduced graphene oxide: a simple approach to derive the uniform distribution of platinum nanoparticles with efficient electrocatalytic activity for durable hydrogen evolution and ethanol oxidation
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Type
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JournalPaper
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Keywords
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Hydrogen evolution, Ethanol oxidation, Amine functionalized-reduced graphene, oxide, Anodic platinum dissolution, Pt nanoparticles
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Abstract
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It has been found that platinum is the most active catalyst for energy production and conversion. However, reaching the high durability beside the higher activity is a magnificent challenge. Here, we demonstrate a novel electrochemical approach to produce the uniformly platinum nanoparticles (Pt NPs) on amine functionalized-reduced graphene oxide (Pt/amino-rGO), via anodic platinum dissolution with improved electrocatalytic activity toward hydrogen evolution reaction (HER) and ethanol oxidation reaction (EOR). High stability and durability of Pt/amino-rGO for hydrogen generation and small poisoning effect of ethanol oxidation products are the crucial advantageous of this hybrid structure. Besides its higher stability, the prepared catalyst displays a 2.2 and 3.5-fold enhancement toward hydrogen generation and ethanol oxidation, respectively rather than Pt/C catalyst. Remarkably, it exhibits the increasing catalytic activity over time and displays the high ratio of forward to backward current (If/ Ib = 3.3) for ethanol oxidation, which represents the catalyst poisoning resistance. This work opens a new perspective to modulate the surface and interface of carbon-based substrate by loading the metal NPs via a facile electrochemical process with growing activity for many possible applications.
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Researchers
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Abdollah Salimi (Second Researcher), Aso Navaee (First Researcher)
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