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Chlorophyll-based photocatalysts and their evaluations for methyl orange photoreduction

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Title Chlorophyll-based photocatalysts and their evaluations for methyl orange
photoreduction
 
Creator Joshi, Meenal
Kambles, Sanjay P
Labhsetwar, Nitin
Parwate, D V
Rayalu, Sadhana S
 
Subject Materials Science
 
Description Immobilization of chlorophyll on different functionalized mesoporous materials has been attempted.
The replacement of butanediol with monoethanol amine has resulted in increase in chlorophyll loading
by a factor of two. The maximum immobilization of chlorophyll was on MCM-41 functionalized with
monoethanolamine MCM-41/MEA/Chl) as compared to other mesoporous materials. This material has
been characterized using XRD, UV–vis diffuse reflectance spectroscopy, scanning electron microscopy
(SEM-EDX) and fluorescence spectroscopy. The photocatalytic reduction ofmethyl orange (MO)was studied
using MCM-41/MEA/Chl as photocatalyst under the visible light. The photocatalytic reduction of MO
was 0.396 mg/g of MCM-41/MEA/Chl photocatalyst as compared to 0.508 mg/g of TiO2 for that of Degussa
P-25 photocatalyst. The effect of various operating parameters like catalyst loading, initial concentration
and intensity of light has also been studied. Photocatalytic property of chlorophyll-based photocatalytic
material indicates that chlorophyll acts as a reaction center, which absorbs visible light and generates
electron, which is transferred to different electron acceptors reducing MO into derivative of hydrazine.
 
Publisher Elsvier
 
Date 2009
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1005/1/joshi2009.pdf
Joshi, Meenal and Kambles, Sanjay P and Labhsetwar, Nitin and Parwate, D V and Rayalu, Sadhana S (2009) Chlorophyll-based photocatalysts and their evaluations for methyl orange photoreduction. Journal of Photochemistry and Photobiology A: Chemistry, 204. pp. 83-89. ISSN 1010-6030
 
Relation https://www.journals.elsevier.com/journal-of-photochemistry-and-photobiology-a-chemistry
http://neeri.csircentral.net/1005/