Phosphate-Doped Carbon Black as Pt Catalyst Support: Co-catalytic Functionality for Dimethyl Ether and Methanol Electro-oxidation

Min Yin, Yunjie Huang, Qingfeng Li, Jens Oluf Jensen, Lars Nilausen Cleemann, Wei Zhang, Niels J. Bjerrum, Wei Xing

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Abstract

Niobium-phosphate-doped (NbP-doped) carbon blacks were prepared as the composite catalyst support for Pt nanoparticles. Functionalities of the composite include intrinsic proton conductivity, surface acidity, and interfacial synergistic interactions with methanol and dimethyl ether (DME). The supported Pt catalysts show significant improvement in catalytic activity towards the direct oxidation of methanol and DME, attributable to the enhanced adsorption and dehydrogenation of methanol and DME, as well as the presence of activated OH species in the catalysts. The latter is demonstrated to facilitate the removal of CO intermediates formed during the oxidation reactions.
Original languageEnglish
JournalChemElectroChem
Volume1
Issue number2
Pages (from-to)448-454
Number of pages7
ISSN2196-0216
DOIs
Publication statusPublished - 2014

Keywords

  • ELECTROCHEMISTRY
  • FUEL-CELLS
  • ELECTROCATALYTIC METHANOL
  • NIOBIUM PHOSPHATE
  • OXYGEN REDUCTION
  • OXIDATION
  • NANOPARTICLES
  • DEHYDRATION
  • SHELL
  • 5-HYDROXYMETHYL-2-FURALDEHYDE
  • NANOCOMPOSITE
  • electrocatalysis
  • electrochemistry
  • methanol
  • niobium phosphate
  • platinum

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