title: Catalytic membranes prepared using layer-by-layer adsorption of polyelectrolyte/metal nanoparticle films in porous supports.
abstract: Layer-by-layer adsorption of polyelectrolytes and gold nanoparticles within porous supports provides a convenient method for forming catalytic membranes. The polyelectrolyte film effectively immobilizes the gold nanoparticles without inhibiting access to catalytic sites, as shown by the similar rate constants for nanoparticle-catalyzed 4-nitrophenol reduction in solution and in membranes. Modified alumina membranes reduce >99% of 0.4 mM 4-nitrophenol at linear flow rates of 0.98 cm/s, and the modification process is also applicable to track-etched polycarbonate supports.
authors.affiliation: Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: David M
authors.initials: DM
authors.lastname: Dotzauer
authors.forename: Jinhua
authors.initials: J
authors.lastname: Dai
authors.forename: Lei
authors.initials: L
authors.lastname: Sun
authors.forename: Merlin L
authors.initials: ML
authors.lastname: Bruening
mesh_terms: D000327:Adsorption; D002384:Catalysis; D003460:Crystallization / Q000379:methods*; D004573:Electrolytes / Q000737:chemistry*; D008422:Materials Testing; D008567:Membranes, Artificial; D008670:Metals / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties
chemical_list: D004573:Electrolytes; D008567:Membranes, Artificial; D008670:Metals