Structural transformation of Ga2O3-based catalysts during photoinduced reforming of methanol

Ádám Vass, Zoltán Pászti, Szabolcs Bálint, Péter Németh, András Tompos, Emília Tálas

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this work PtOx/β-Ga2O3 is prepared and characterized in order to test its properties in the photoinduced methanol reforming reaction using UV–vis irradiation. XRD, TEM and XPS techniques are used to characterize the fresh and recovered Pt-containing and Pt-free samples. Our results prove that in the presence of Pt the Ga2O3 is converted into GaOOH as a result of the irradiation and/or in situ photoinduced H2 formation. In parallel, Pt is gradually reduced and the unusually low value of the 4f7/2 binding energy of the metallic Pt component evidences electron transfer from GaOOH towards Pt in accordance with its role as cocatalyst.

Original languageEnglish
Pages (from-to)71-78
Number of pages8
JournalMaterials Research Bulletin
Volume95
DOIs
Publication statusPublished - Nov 2017

Keywords

  • A. Gallium oxides
  • C. Photoelectron spectroscopy
  • C. X-ray diffraction
  • D. Catalytic properties
  • D. Surface properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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