Synthesis, structural characterization, and photocatalytic performance of mesoporous W-MCM-48

Dan Zhao, Adrian Rodriguez, Nada M. Dimitrijevic, Tijana Rajh, Ranjit T. Koodali

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Tungsten-containing mesoporous MCM-48 was synthesized by a rapid and facile room-temperature procedure. The mesoporous structure and the local environment of tungsten species were studied by powder X-ray diffraction, transmission electron microscopy, nitrogen adsorption isotherms, UV-visible diffuse reflectance spectroscopy, and Raman spectrometry. The long-range ordered mesoporous structure of MCM-48 was well preserved after tungsten incorporation. Tungsten oxide species were highly dispersed in the MCM-48 matrix, and no bulk crystalline WO3 was formed. The as-prepared W-MCM-48 materials show notable photocatalytic activity for hydrogen evolution from a methanol-water mixture under UV irradiation though bulk WO3 is not active for the reaction. The photocatalytic mechanism was studied by electron spin resonance spectroscopy.

Original languageEnglish (US)
Pages (from-to)15728-15734
Number of pages7
JournalJournal of Physical Chemistry C
Volume114
Issue number37
DOIs
StatePublished - Sep 23 2010
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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