Hollow Ag@Pd core-shell nanotubes as highly active catalysts for the electro-oxidation of formic acid

Publication: Research - peer-reviewJournal article – Annual report year: 2012

  • Author: Jiang, Yuanyuan

    Changchun Institute of Applied Chemistry, Graduate University of the Chinese Academy of Sciences, China

  • Author: Lu, Yizhong

    Changchun Institute of Applied Chemistry, Graduate University of the Chinese Academy of Sciences, China

  • Author: Han, Dongxue

    Changchun Institute of Applied Chemistry, Graduate University of the Chinese Academy of Sciences, China

  • Author: Zhang, Qixian

    Changchun Institute of Applied Chemistry, Graduate University of the Chinese Academy of Sciences, China

  • Author: Niu, Li

    Department of Chemistry, Technical University of Denmark

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Ag nanowires are prepared as templates by a polyol reduction process. Then Ag nanotubes coated with a thin layer of Pd are synthesized through sequential reduction accompanied with the galvanic displacement reaction. The products show a hollow core-shell nanotubular structure, as demonstrated by detailed characterizations. The Ag@Pd can significantly improve the electrocatalytic activity towards the electro-oxidation of formic acid and enhance the stability of the Pd component. It is proposed that the enhanced electrochemically active surface area and modulated electron structure of Pd by Ag are responsible for the improvement of electrocatalytic activity and durability. The results obtained in this work are different from those previous reports, in which alloy walls with hollow interiors are usually formed. This work provides a new and simple method for synthesizing novel bimetallic core-shell structure with a hollow interior, which can be applied as high-performance catalysts for the electro-oxidation of formic acid.
Original languageEnglish
JournalNanotechnology
Publication date2012
Volume23
Issue10
Pages105609
Number of pages9
ISSN0957-4484
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 4

Keywords

  • Nanoscience, Materials, Physics, Fuel-Cells, Replacement Reaction, Electrocatalytic Activity, Bimetalic Nanoparticles, Metal Nanostructures, Silver Nanowires, Organic medium, Oxidation, Decomposition, Hydrogen
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