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Effect of Ag and Au doping on the photocatalytic activity of TiO2 supported on textile fibres

Published online by Cambridge University Press:  01 February 2011

Mohammed Jasim Uddin ,
Federico Cesano ,
Domenica Scarano ,
Silvia Bordiga  and
Adriano Zecchina
Mohammed Jasim Uddin
Affiliation:
mohammed.uddin@unito.it, University of Turin, Department of Chemistry IFM, Via P. Giuria 7, Turin, 10125, Italy, +39 011 670 7859, +39 011 670 7855
Federico Cesano
Affiliation:
federico.cesano@unito.it, University of Turin, Department of Chemistry IFM and Nanostructured Interfaces and Surfaces (NIS), Centre of Excellence, Via P. Giuria 7, Turin, 10125, Italy
Domenica Scarano
Affiliation:
domenica.scarano@unito.it, University of Turin, Department of Chemistry IFM and Nanostructured Interfaces and Surfaces (NIS), Centre of Excellence, Via P. Giuria 7, Turin, 10125, Italy
Silvia Bordiga
Affiliation:
silvia.bordiga@unito.it, University of Turin, Department of Chemistry IFM and Nanostructured Interfaces and Surfaces (NIS), Centre of Excellence, Via P. Giuria 7, Turin, 10125, Italy
Adriano Zecchina
Affiliation:
adriano.zecchina@unito.it, University of Turin, Department of Chemistry IFM and Nanostructured Interfaces and Surfaces (NIS), Centre of Excellence, Via P. Giuria 7, Turin, 10125, Italy
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Abstract

A simple method to develop TiO2, Ag or Au-doped TiO2 thin films on cotton textiles for advanced applications, is reported. The homogeneous TiO2 thin films have been deposited on cotton textiles by using sol-gel method at low temperature (100° C), whereas Ag and Au nanoparticles were then deposited on the pre-existent TiO2 films by photoreduction. The Ag/TiO2 covered cotton fibres show multichromic behaviour (grey colour under visible light and brown colour upon ultraviolet light exposure) as well as photoactivity. The Au-TiO2 film coated the cotton textile produces a purple colour with excellent self cleaning properties. The original and treated fibres have been characterized by several techniques (SEM, HRTEM, FTIR, Raman, UV–vis spectroscopy and XRD).

Keywords

photochemicalcatalyticdopant
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1077: Symposium L – Functional Plasmonics and Nanophotonics , 2008 , 1077-L07-20
Copyright
Copyright © Materials Research Society 2008

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