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Development of polymeric hollow fiber membranes containing catalytic metal nanoparticules

Macanas, Jorge and Ouyang, Lu and Bruening, Merlin L. and Muñoz, Maria and Remigy, Jean-Christophe and Lahitte, Jean-Francois Development of polymeric hollow fiber membranes containing catalytic metal nanoparticules. (2010) Catalysis Today, Vol. 156 (n° 3-4). pp. 181-186. ISSN 0920-5861

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Official URL: http://dx.doi.org/10.1016/j.cattod.2010.02.036

Abstract

Metal nanoparticles (MNPs) have unique physico-chemical properties advantageous for catalytic applications which differ from bulk material. However, the main drawback of MNPs is their insufficient stability due to a high trend for aggregation. To cope with this inconvenience, the stabilization of MNPs in polymeric matrices has been tested. This procedure is a promising strategy to maintain catalytic properties. The aim of this work is the synthesis of polymer-stabilized MNPs inside functionalized polymeric membranes in order to build catalytic membrane reactors. First, the polymeric support must have functional groups capable to retain nanoparticle precursors (i.e. sulfonic), then, nanoparticles can grow inside the polymeric matrix by chemical reduction of metal ions. Two different strategies have been used in this work. Firstly, polyethersulfone microfiltration hollow fibers have been modified by applying polyelectrolyte multilayers. Secondly, polysulfone ultrafiltration membranes were modified by UV-photografting using sodium p-styrene sulfonate as a vinyl monomer. The catalytic performance of developed hollow fibers has been evaluated by using the reduction of nitrophenol to aminophenol by sodium borohydride. Hollow fiber modules with Pd MNPs have been tested in dead-end and cross-flow filtration. Complete nitrophenol degradation is possible depending on operation parameters such as applied pressure and permeate flux.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Catalysis Today website : http://www.sciencedirect.com/science/journal/09205861
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Michigan State University - MSU (USA)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Universitat Autònoma de Barcelona - UAB (SPAIN)
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Deposited By: Jean-Francois LAHITTE
Deposited On:09 Nov 2010 11:25

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