Microstructure and electrocatalytic performance of nanoporous gold foils decorated by TiO2coatings

A. Y. Chen, S. S. Shi, J. W. Wang, F. Liu, F. Wang, Y. Wang, Haihui Ruan, X. F. Xie

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

An ultra-thin TiO2coating was sputtered onto the surface of nanoporous gold (NPG) foil by magnetron sputtering. The microstructure of the TiO2@NPG was studied by scanning electron microscopy, transmission electron microscopy, atomic force microscopy and X-ray photoelectric spectroscopy. The TiO2coating, characterized by an amorphous structure, covers the Au ligaments, increases the ligament size and decreases the surface roughness. The electrocatalytic activities of TiO2@NPG toward the glucose oxidation in alkaline media were measured by cyclic voltammetry method. The experimental results exhibit that the TiO2@NPG composites present an obvious improvement of electrocatalytic performance compared with the bare NPG. The effect of TiO2content on the electrocatalytic performance is investigated, and a synergistic effect between TiO2and NPG is discussed.
Original languageEnglish
Pages (from-to)113-118
Number of pages6
JournalSurface and Coatings Technology
Volume286
DOIs
Publication statusPublished - 1 Jan 2016

Keywords

  • Electrocatalytic performance
  • Microstructure
  • Nanoporous gold
  • Sputtering
  • TiO coating 2

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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