1. Photocatalytic generation of silver nanoparticles and application to the antibacterial functionalization of textile fabrics
- Author
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T. Ballet, Céline Brunon, Michel Langlet, F. Roussel, M. Messaoud, Didier Léonard, Nadia Oulahal, Elise Chadeau, L. Rappenne, Laboratoire des matériaux et du génie physique (LMGP ), Institut National Polytechnique de Grenoble (INPG)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Consortium des Moyens Technologiques Communs (CMTC), Institut National Polytechnique de Grenoble (INPG), Sciences Analytiques (SA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Laboratoire de Recherche en Génie Industriel alimentaire (LRGIA), and Université de Lyon-Université de Lyon
- Subjects
Anatase ,[SDV.BIO]Life Sciences [q-bio]/Biotechnology ,Scanning electron microscope ,Chemistry ,General Chemical Engineering ,technology, industry, and agriculture ,General Physics and Astronomy ,Nanoparticle ,Nanotechnology ,[CHIM.MATE]Chemical Sciences/Material chemistry ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Silver nanoparticle ,0104 chemical sciences ,Chemical engineering ,Photocatalysis ,Surface modification ,[INFO.INFO-BT]Computer Science [cs]/Biotechnology ,0210 nano-technology ,Antibacterial activity ,Wet chemistry - Abstract
International audience; An all-inorganic protocol, entirely based on wet chemistry methods, has been studied to form nanosized Ag metallic particles in solution Liquid suspensions of anatase TiO(2) nanocrystallites have first been prepared through a sal-gel route Silver nanoparticles (NPs) have then been generated through the photocatalytic reduction of a silver salt, diluted in TiO(2) liquid suspensions, and exposed to UV light, which results in the formation of a mixed Ag-TiO(2) suspension. Mechanisms occurring in solutions during the metallization step and a post-metallization ageing period have been studied by UV/vis spectroscopy Chemico-structural and morphological properties of resulting silver NPs have been studied by transmission electron microscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. Ag-TiO(2) suspensions have then been impregnated on cotton-based textile samples and the antibacterial activity of so-functionalized textiles has been studied with respect to E colt and L. innocua bacteria It is shown that, while TiO(2) NPs attached to textile fibres have no antibacterial activity, functionalized textiles exhibit a strong antibacterial activity due to Ag NPs, and this activity can be reached for a large range of impregnated silver amounts. (C) 2010 Elsevier B.V. All rights reserved
- Published
- 2010