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

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	Chlorophyll-Based Photocatalyst; Mesoporous Material; Methyl Orange; Photoreduction
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Nitin Labhasetwar
Date Deposited:	09 Jan 2018 07:45
Last Modified:	09 Jan 2018 07:45
URI:	http://neeri.csircentral.net/id/eprint/1005

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