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Hydrogen evolution by water splitting using novel composite zeolite-based photocatalyst

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Title Hydrogen evolution by water splitting using novel
composite zeolite-based photocatalyst
 
Creator Dubey, Nidhi
Labhsetwar, Nitin
Devotta, S
Rayalu, S S
 
Subject Materials Science
 
Description Novel zeolite-based material showing photocatalytic properties in the visible light have been synthesized by incorporating TiO2, heteropolyacid
(HPA) and transition metal, namely cobalt. This material shows high efficiency for water splitting under visible light irradiation. Hydrogen
generation to the tune of 2171 mmol/h/g of TiO2 has been achieved for the composite photocatalyst synthesized as compared to H2 evolution rate to
the tune of 131.6 mmol/h/g of TiO2 for Degussa P25. This suggests that the TiO2 which gets effectively dispersed and stabilized on the surface of
zeolite works synergistically with cobalt and heteropolyacid to make the material active in visible light for evolution of hydrogen from water. TiO2
is the photocatalyst, HPA functions as the dye sensitiser as well as redox system; zeolite functions as support matrix and as electron acceptor in
synergy with cobalt. The probable mechanism for improved hydrogen evolution rate using such composite photocatalyst has been discussed.
 
Publisher Elsevier
 
Date 2007-12-15
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/988/1/1-s2.0-S0920586107005445-main.pdf
Dubey, Nidhi and Labhsetwar, Nitin and Devotta, S and Rayalu, S S (2007) Hydrogen evolution by water splitting using novel composite zeolite-based photocatalyst. Catalysis Today, 129 (3-4). pp. 428-434. ISSN 0920-5861
 
Relation https://www.journals.elsevier.com/catalysis-today
http://neeri.csircentral.net/988/