Strategies to design efficient silica-supported photocatalysts for reduction of CO2

Mohamed S. Hamdy, Rezvaneh Amrollahi, Ilya Sinev, Bastian Mei, Guido Mul

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The photocatalytic reduction of CO2 by water vapor to produce light hydrocarbons was studied over a series of catalysts consisting of variable loading of Ti incorporated in TUD-1 mesoporous silica, either modified by ZnO nanoparticles or isolated Cr-sites. Unexpectedly, the performance of ZnO-Ti-TUD-1 and Cr-Ti-TUD-1 was inferior to the parent Ti-TUD-1. An explanation can be found in experiments on the photocatalytic degradation of a mixture of hydrocarbons (i.e., CH4, C2H4, C2H6, C3H6, and C3H8) under the same illumination conditions. Ti-TUD-1 exhibits the poorest activity in hydrocarbon degradation, while ZnO-Ti-TUD-1 and Cr-Ti-TUD-1 showed very significant degradation rates. This study clearly demonstrates the importance of evaluating hydrocarbon conversion over photocatalysts active in converting CO2 to hydrocarbons (in batch reactors).
Original languageEnglish
Pages (from-to)594-597
JournalJournal of the American Chemical Society
Issue number2
Publication statusPublished - 2014


  • METIS-306368
  • IR-92606


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