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Photocatalytic properties of zeolite-based materials for the photoreduction of methyl orange

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Title Photocatalytic properties of zeolite-based materials for the photoreduction of methyl orange
 
Creator Dubey, Nidhi
Rayalu, Sadhana S
Labhsetwar, Nitin
Naidu, Rashmi R
Chatti, Ravikrishna V
Devotta, Sukumar
 
Subject Chemistry, Chemical Technology
 
Description Novel photocatalytic materials have been prepared by incorporation of TiO2, a transition metal and, heteropolyacid (HPA) in the zeolite structure. These materials have been characterized using XRD, UV–vis diffuse reflectance spectroscopy and elemental analysis. The photocatalytic activity of the materials in visible light has been evaluated for photoreduction of methyl orange solution in the presence of a sacrificial electron donor 1:40 ethanol–water mixture. The material Zeo-/TiO2/Co2+/HPA photoreduces methyl orange effectively to the extent of about 4.11 mg/g TiO2 and shows better photocatalytic activity as compared to Zeo-Y/TiO2/HPA, indicating the role of transition metal ions. The improved photocatalytic properties in the visible region could be due to the combined effect of transition metal ions and HPA, while these constituents along with the zeolite framework are also likely to contribute towards delay in charge recombination.
 
Publisher Elsevier
 
Date 2006
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/69/1/Dubey1.pdf
Dubey, Nidhi and Rayalu, Sadhana S and Labhsetwar, Nitin and Naidu, Rashmi R and Chatti, Ravikrishna V and Devotta, Sukumar (2006) Photocatalytic properties of zeolite-based materials for the photoreduction of methyl orange. Applied Catalysis A: General, 303. pp. 152-157.
 
Relation http://neeri.csircentral.net/69/