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Synthesis of highly active nanocrystalline WO3 and its application in laser-induced photocatalytic removal of a dye from water

Paper ID Volume ID Publish Year Pages File Format Full-Text
51198 46835 1984 5 PDF Available
Title
Synthesis of highly active nanocrystalline WO3 and its application in laser-induced photocatalytic removal of a dye from water
Abstract

Tungsten oxide nanoparticles were synthesized using the sol–gel process and applied for heterogeneous photocatalytic removal of a dye using a 355 nm laser radiation generated from Nd:YAG for the first time. Effect of various parameters, such as calcination temperature, calcination time, catalyst concentration and laser energy on the photocatalytic removal of dye has been investigated. The study showed that almost complete degradation of dye can be achieved within very short time of reaction (within few minutes) in presence of nanocrystalline WO3 under laser irradiation. The removal process obeys first-order kinetics with an appreciable rate constant 0.146 min−1. The main reason of high efficiency is the nanostructure nature of WO3 and the laser as an excitation source as compared with the conventional setups using lamps and conventional microstructure catalysts.

Keywords
Laser-induced photocatalysis; Nanocrystalline tungsten oxide; Sol–gel synthesis; Dye degradation
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Synthesis of highly active nanocrystalline WO3 and its application in laser-induced photocatalytic removal of a dye from water
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 15, 15 September 2009, Pages 1980–1984
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
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Full-text PDF Download
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