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

M. Qamar; M. A. Gondal; Z. H. Yamani

doi:10.1016/j.catcom.2009.07.014

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

M. Qamar
, M. A. Gondal^*
, Z. H. Yamani

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

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.

Original language	English
Pages (from-to)	1980-1984
Number of pages	5
Journal	Catalysis Communications
Volume	10
Issue number	15
DOIs	https://doi.org/10.1016/j.catcom.2009.07.014
State	Published - 15 Sep 2009

Bibliographical note

Funding Information:
The support by King Fahd University of Petroleum and Minerals (KFUPM) and Center of Excellence in Nanotechnology is gratefully acknowledged under Project #08-NAN93-4 and KACST 28-40. One of the authors M.Q. is thankful to KFUPM for Post Doctoral Fellowship. The authors are thankful to King Abdul Aziz City for Science and Technology (KACST) for the TEM analysis.

Keywords

Dye degradation
Laser-induced photocatalysis
Nanocrystalline tungsten oxide
Sol-gel synthesis

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

Access to Document

10.1016/j.catcom.2009.07.014

Cite this

@article{d502f7b46f0244219f879581e44186ca,

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 = "Dye degradation, Laser-induced photocatalysis, Nanocrystalline tungsten oxide, Sol-gel synthesis",

author = "M. Qamar and Gondal, \{M. A.\} and Yamani, \{Z. H.\}",

note = "Funding Information: The support by King Fahd University of Petroleum and Minerals (KFUPM) and Center of Excellence in Nanotechnology is gratefully acknowledged under Project \#08-NAN93-4 and KACST 28-40. One of the authors M.Q. is thankful to KFUPM for Post Doctoral Fellowship. The authors are thankful to King Abdul Aziz City for Science and Technology (KACST) for the TEM analysis. ",

year = "2009",

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doi = "10.1016/j.catcom.2009.07.014",

language = "English",

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T1 - Synthesis of highly active nanocrystalline WO3 and its application in laser-induced photocatalytic removal of a dye from water

AU - Qamar, M.

AU - Gondal, M. A.

AU - Yamani, Z. H.

N1 - Funding Information: The support by King Fahd University of Petroleum and Minerals (KFUPM) and Center of Excellence in Nanotechnology is gratefully acknowledged under Project #08-NAN93-4 and KACST 28-40. One of the authors M.Q. is thankful to KFUPM for Post Doctoral Fellowship. The authors are thankful to King Abdul Aziz City for Science and Technology (KACST) for the TEM analysis.

PY - 2009/9/15

Y1 - 2009/9/15

N2 - 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.

AB - 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.

KW - Dye degradation

KW - Laser-induced photocatalysis

KW - Nanocrystalline tungsten oxide

KW - Sol-gel synthesis

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DO - 10.1016/j.catcom.2009.07.014

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