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Effects of Fuel on Morphology and Photocatalytic Performance of ZnO Nanorods Synthesized by Solution Combustion Method

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Author(s): LI Jia-Ke, LIU Xin

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 28;
Issue: 8;
Start page: 880;
Date: 2013;
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Keywords: solution combustion method; fuel; ZnO; morphology; photocatalytic performance

ABSTRACT
ZnO nanorods was synthesized by solution combustion method using sucrose, citric acid, glycol (or urea) as fuel, and Zn (NO3)2 as oxidant. Effects of fuels (namely sucrose, citric acid, glycol or urea) on phase composition, morphology, specific surface area and photocatalytic performance of as-synthesized ZnO were investigated by means of XRD, SEM, BET and absorption spectrum. The results show that ZnO nanorods (average radial size less than 100?nm) with a hexagonal crystal structure can be synthesized at ignition temperature of 500¡æ. ZnO owns the best crystallization or the highest specific surface area (24.83 m2/g) when using urea or sucrose as fuel, respectively. Photocatalytic tests show that as-synthesized ZnO using sucrose as fuel owns the best photocatalytic performance. The photodegradation efficiency to methyl orange solution (10 ml/L) is 98.2% under the high-pressure mercury lamp irradiation for 60?min, and the reaction is described as the pseudo first order kinetics equation.

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Tangokurs Rapperswil-Jona

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