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Visible light active zeolite-based photocatalysts for hydrogen evolution from water

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Title Visible light active zeolite-based photocatalysts for
hydrogen evolution from water
 
Creator Dubey, Nidhi
Rayalu, Sadhana S
Labhsetwar, Nitin
Devotta, Sukumar
 
Subject Materials Science
 
Description Hydrogen, considered as the fuel for future can be produced from non-conventional,
renewable and plentiful source like water. Novel zeolite-based materials that show photocatalytic
properties in the visible light have been synthesized by incorporating titanium
dioxide (TiO2), heteropolyacid (HPA) and transition metals like cobalt (Co). These materials
show high efficiency for water splitting under visible light irradiation. Hydrogen (H2)
generation to the tune of 2730 mmol/h/g TiO2 has been obtained for the composite
photocatalyst synthesized. Platinum (Pt) doping has also been attempted in this composite
photocatalyst, however, no substantial enhancement in hydrogen generation was
observed. The high efficiency of the composite photocatalyst suggests that the TiO2 which
gets effectively dispersed and stabilized on the surface of zeolite works synergistically with
transition metal like cobalt and heteropolyacid to make the material active in visible light
for photoreduction of water to hydrogen. The aluminosilicate framework of zeolite also
contributes towards delayed charge separation. This composite photocatalyst shows
improvement in hydrogen evolution rate over other TiO2 based visibly active photocatalyst
reported.
 
Publisher Elsevier
 
Date 2008-11
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1000/1/dubey2008.pdf
Dubey, Nidhi and Rayalu, Sadhana S and Labhsetwar, Nitin and Devotta, Sukumar (2008) Visible light active zeolite-based photocatalysts for hydrogen evolution from water. International Journal of Hydrogen Energy, 33 (21). pp. 5958-5966. ISSN 0360-3199
 
Relation https://www.journals.elsevier.com/international-journal-of-hydrogen-energy
http://neeri.csircentral.net/1000/