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Effect of graphite silica on TiO2photocatalysis in hydrogen production from water–methanol solution

Authors
Journal
Journal of Photochemistry and Photobiology A Chemistry
1010-6030
Publisher
Elsevier
Publication Date
Volume
184
Issue
3
Identifiers
DOI: 10.1016/j.jphotochem.2006.04.031
Keywords
  • Graphite Silica
  • Titanium Dioxide
  • Hydrogen Gas
  • Water–Methanol Mixture
  • Photocatalysis

Abstract

Abstract The photocatalytic production of hydrogen gas from water–methanol mixtures was performed in contact with a suspended mixture of powdered titanium dioxide (TiO 2) and graphite silica (GS), a naturally available mineral. A drastic synergy effect for hydrogen production was found for GS in collaboration with TiO 2. The amount of hydrogen gas evolved from water–methanol mixtures was increased by a factor of ca. 100 simply by mixing GS with TiO 2. The synergy effect is attributed to the enrichment of hydrogen ions in the clay components of GS and aggregation of GS and TiO 2 particles.

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