Chemosphere, ( ISI ), Volume (107), No (7), Year (2014-7) , Pages (163-174)

Title : ( A review on catalytic applications of Au/TiO2 nanoparticles in the removal of water pollutant )

Authors: Ali Ayati , Ali Ahmadpour , Fatemeh F. Bamoharram , Bahareh Tanhaei , Mika Manttari , Mika Sillanpaa ,

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Nanomaterials are showing great potential for the improvement of water treatment technologies. In recent years, catalysis and photocatalysis processes using gold nanoparticles (Au-NPs) have received great attention due to their effectiveness in degrading and mineralizing organic compounds. This paper aims to review and summarize the recently published works and R & D progress in the field of photocatalytic oxidation of various water pollutants such as toxic organic compounds (i.e. azo dyes and phenols) by Au-NPs/TiO2 under solar, visible and UV irradiation. Extensive research which has focused on the enhancement of photocatalysis by modification of TiO2 employing Au-NPs is also reviewed. Moreover, the effects of various operating parameters on the photocatalytic activity of these catalysts, such as size and loading amount of Au-NPs, pH and calcination, are discussed. The support type, loading amount and particle size of deposited Au-NPs are the most important parameters for Au/TiO2 catalytic activity. Our study showed in particular that the modification of TiO2, including semiconductor coupling, can increase the photoactivity of Au/TiO2. In contrast, doping large gold NPs can mask or block the TiO2 active sites, reducing photocatalytic activity. The optimized loading amount of Au-NP varied for each experimental condition. Finally, research trends and prospects for the future are briefly discussed.

Keywords

, Gold nanoparticles, Water treatment, Pollutant, Photocatalysis, TiO2,
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@article{paperid:1042531,
author = {Ali Ayati and Ahmadpour, Ali and Fatemeh F. Bamoharram and Bahareh Tanhaei and Mika Manttari and Mika Sillanpaa},
title = {A review on catalytic applications of Au/TiO2 nanoparticles in the removal of water pollutant},
journal = {Chemosphere},
year = {2014},
volume = {107},
number = {7},
month = {July},
issn = {0045-6535},
pages = {163--174},
numpages = {11},
keywords = {Gold nanoparticles; Water treatment; Pollutant; Photocatalysis; TiO2; Support},
}

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%0 Journal Article
%T A review on catalytic applications of Au/TiO2 nanoparticles in the removal of water pollutant
%A Ali Ayati
%A Ahmadpour, Ali
%A Fatemeh F. Bamoharram
%A Bahareh Tanhaei
%A Mika Manttari
%A Mika Sillanpaa
%J Chemosphere
%@ 0045-6535
%D 2014

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