Room temperature synthesis of Ti-MCM-48 and Ti-MCM-41 mesoporous materials and their performance on photocatalytic splitting of water

Rui Peng, Dan Zhao, Nada M. Dimitrijevic, Tijana Rajh, Ranjit T. Koodali

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

Two sets of titania containing MCM-48 and MCM-41 photocatalysts were prepared at room temperature. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), nitrogen adsorption isotherms, UV-visible diffuse reflectance spectroscopy (DRS), and electron paramagnetic resonance (EPR) spectroscopy were utilized to characterize the Ti-MCM-48 and Ti-MCM-41 mesoporous materials. The photocatalytic hydrogen evolution results carried out under UV light irradiation indicated that the photocatalytic activity decreased with an increase of Ti loading in Ti-MCM-48 and Ti-MCM-41 samples. The photocatalytic activity was found to be dependent on the coordination of Ti and most importantly on the pore geometry, that is, cubic MCM-48 with interpenetrating network of pores exhibiting higher activity than uni-dimensional hexagonal pores in MCM-41.

Original languageEnglish (US)
Pages (from-to)1605-1613
Number of pages9
JournalJournal of Physical Chemistry C
Volume116
Issue number1
DOIs
StatePublished - Jan 12 2012
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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