Preparation of platinum inverse opals using self-assembled templates and their application in methanol oxidation

Yong Liu, Jun Chen, Violeta Misoska, Gerry F. Swiegers, Gordon G. Wallace*

*Corresponding author for this work

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Synthetic opals were prepared on indium tin oxide (ITO) glass substrates from a highly monodisperse polystyrene dispersion. Platinum was then electrodeposited through the interstitial space of the opal matrix. The platinum inverse opal (Pt-IOp) was subsequently obtained by the removal of the polystyrene template, leaving a highly ordered three dimensional structure. Both the opal template and platinum (Pt) inverse opal were characterised by scanning electron microscopy, UV-visible spectroscopy and cyclic voltammetry. The results confirmed that the Pt inverse opal (Pt-IOp) has a microporous structure with high surface area and exhibits excellent electrochemical property. The electrocatalytic application of the resulting nanostructured Pt inverse opal electrodes for methanol oxidation was also investigated. The nanostructured Pt-IOp electrode showed a catalytic activity and highly stable electrocatalytic performance in methanol oxidation.

Original languageEnglish
Pages (from-to)2887-2890
Number of pages4
JournalMaterials Letters
Volume61
Issue number14-15
DOIs
Publication statusPublished - Jun 2007

Keywords

  • Electrocatalysis
  • Methanol oxidation
  • Platinum inverse opal
  • Synthetic opal

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