Joshi, Meenal M and Labhsetwar, Nitin and Mangrulkar, Priti A and Tijare, Saumitra N and Kamble, Sanjay P and Rayalu, Sadhana S (2009) Visible light induced photoreduction of methyl orange by N-doped mesoporous titania. Applied Catalysis A: General, 357. pp. 26-33. ISSN 0926-3373

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Abstract

N-doped mesoporous titania was synthesized using templating method. Biopolymer chitosan was used as a template and also as a nitrogen source along with ammonium hydroxide. Three different types of Ndoped mesoporous titania were synthesized by varying composition of chitosan and titania precursor. These photocatalysts were characterized using XRD, BET-SA, FTIR, UV-DRS, SEM–EDX and XPS analysis. The photocatalytic activity of mesoporous titania was studied by methyl orange (MO) photoreduction reaction. From the experimental results it was observed that the N-doped mesoporous titania (1:2) gives the highest photocatalytic reduction of MO as compared to N-doped mesoporous titania prepared with (1:1) and (1:3) stoichiometry. This could be due to the optimal level of ‘N’ incorporation in the N-doped mesoporous titania (1:2). Photocatalysts reduce theMO dye into derivative of hydrazine. Photoactivity of N-doped mesoporous titania (1:2) is 1.0721 mg of MO reduced per g of TiO2 vis-a` -vis 0.508 mg of MO reduced per g of TiO2 for Degussa P25 photocatalyst. The effect of various operating parameters like photocatalyst loading, initial concentration and intensity of light also has been studied.

Item Type:	Article
Uncontrolled Keywords:	Biopolymer; Chitosan; N-doped Mesoporous Titania; Visible Active Photocatalyst; MO Photoreduction
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Nitin Labhasetwar
Date Deposited:	09 Jan 2018 07:42
Last Modified:	09 Jan 2018 07:42
URI:	http://neeri.csircentral.net/id/eprint/1004

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