Facile solution synthesis of Ag@Pt core–shell nanoparticles with dendritic Pt shells
- 29 January 2013
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Physical Chemistry Chemical Physics
- Vol. 15 (10), 3490-3496
- https://doi.org/10.1039/c3cp44313b
Abstract
Ag@Pt nanoparticles with various dendritic Pt shells were successfully synthesized by using nonionic surfactants at room temperature. Our recent study demonstrated that the addition of nonionic surfactant plays an important key role in the synthesis of dendritic Pt nanostructures (J. Am. Chem. Soc., 2010, 132, 13636). Here we extend this synthetic concept to prepare various Ag@Pt nanoarchitectures. The different nanostructured Pt shells on the Ag core were confirmed by ultraviolet-visible absorption spectroscopy and transmission electron microscopy. As a preliminary electrochemical application, the obtained Ag@Pt nanostructures were applied in the methanol oxidation reaction (MOR) in 0.5 M H2SO4 solution containing 0.5 M methanol. The Ag@Pt nanoparticles with thin dendritic Pt shells show superior CO-tolerance performance with a If/Ib value reaching 3.71. Our Ag@Pt nanostructures with good CO tolerant activity will be prominent catalysts for MOR.Keywords
This publication has 34 references indexed in Scilit:
- Opportunities and challenges for a sustainable energy futureNature, 2012
- Tailored Design of Architecturally Controlled Pt Nanoparticles with Huge Surface Areas toward Superior Unsupported Pt ElectrocatalystsACS Applied Materials & Interfaces, 2012
- Porous Ni@Pt Core‐Shell Nanotube Array Electrocatalyst with High Activity and Stability for Methanol OxidationChemistry – A European Journal, 2012
- Nano-boron carbide supported platinum catalysts with much enhanced methanol oxidation activity and CO toleranceJournal of Materials Chemistry, 2012
- Testing of carbon supported Pd–Pt electrocatalysts for methanol electrooxidation in direct methanol fuel cellsInternational Journal of Hydrogen Energy, 2011
- Synthesis of “Clean” and Well-Dispersive Pd Nanoparticles with Excellent Electrocatalytic Property on Graphene OxideJournal of the American Chemical Society, 2011
- Recent advances in catalysts for direct methanol fuel cellsEnergy & Environmental Science, 2011
- Ultralow‐Platinum‐Loading High‐Performance Nanoporous Electrocatalysts with Nanoengineered Surface StructuresAdvanced Materials, 2010
- Intermetallics as Novel Supports for Pt Monolayer O2 Reduction Electrocatalysts: Potential for Significantly Improving PropertiesJournal of the American Chemical Society, 2009
- Core/Shell Pt/C Nanoparticles Embedded in Mesoporous Carbon as a Methanol‐Tolerant Cathode Catalyst in Direct Methanol Fuel CellsAdvanced Materials, 2008