Simple and large scale one-pot method for preparation of AgBr–ZnO nanocomposites as highly efficient visible light photocatalyst

Simple and large scale one-pot method for preparation of AgBr–ZnO nanocomposites as highly... 1 Introduction</h5> Removal of various organic pollutants from wastewaters is of a great importance nowadays, because these compounds usually are toxic and carcinogenic, posing a serious hazard to aquatic living organisms [1,2] . Physical methods such as adsorption on various adsorbents, ultrafiltration and coagulation only succeed in transferring the pollutants from water to another phase, thus creating secondary pollution [3] . Heterogeneous photocatalysis using semiconductors is an effective method to destroy a wide range of organic pollutants at ambient temperatures and pressures [4,5] . High stability, inexpensive and non-toxicity were identified as the main reasons responsible for the wide acceptability of ZnO materials compared to other photocatalysts [6,7] . Visible light accounts for about 43% of energy in the solar radiation while UV light less than 5% [8] . Unfortunately, nanomaterials of ZnO are not highly efficient under visible light irradiation which seriously restricts its application for industrial purposes. For this reason, in the past few years, many attempts have been done to prepare visible light active photocatalysts based on ZnO nanomaterials [9–12] .</P>Very recently, some interests have been paid to prepare AgBr–ZnO nanocomposites as visible light active photocatalysts [13,14,16–18] , because, silver bromide is well known as http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Simple and large scale one-pot method for preparation of AgBr–ZnO nanocomposites as highly efficient visible light photocatalyst

Applied Surface Science, Volume 283 (C)

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Publisher
Elsevier
Copyright
Copyright © 2013 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2013.07.079
Publisher site
See Article on Publisher Site

Abstract

1 Introduction</h5> Removal of various organic pollutants from wastewaters is of a great importance nowadays, because these compounds usually are toxic and carcinogenic, posing a serious hazard to aquatic living organisms [1,2] . Physical methods such as adsorption on various adsorbents, ultrafiltration and coagulation only succeed in transferring the pollutants from water to another phase, thus creating secondary pollution [3] . Heterogeneous photocatalysis using semiconductors is an effective method to destroy a wide range of organic pollutants at ambient temperatures and pressures [4,5] . High stability, inexpensive and non-toxicity were identified as the main reasons responsible for the wide acceptability of ZnO materials compared to other photocatalysts [6,7] . Visible light accounts for about 43% of energy in the solar radiation while UV light less than 5% [8] . Unfortunately, nanomaterials of ZnO are not highly efficient under visible light irradiation which seriously restricts its application for industrial purposes. For this reason, in the past few years, many attempts have been done to prepare visible light active photocatalysts based on ZnO nanomaterials [9–12] .</P>Very recently, some interests have been paid to prepare AgBr–ZnO nanocomposites as visible light active photocatalysts [13,14,16–18] , because, silver bromide is well known as

Journal

Applied Surface ScienceElsevier

References

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