The Reduction Reaction of 4-nitrophenol Catalyzed by TiO2/poly(AM-co-MBAM) Supported Ag NPs

New polymeric nanocomposites (TiO2/poly(acrylamide-co-methylenbisacrylamide)) decorated with Ag NPs as an heterogeneous recyclable nanocatalyst were presented. The synthesis pathway incluses the surface modification of TiO2 nanoparticles by methacryloxypropyltrimethoxysilan (MAPTMS), which provided a reactive C=C bond that can polymerized with acrylamide (AM) and methylenbisacrylamide (MBAM) monomers. Then, Ag NPs were deposited on the surface of polymeric nanocomposites via the AgNO3 reduction. The catalytic activity of Ag-TiO2/poly(AM-co-MBAM) nanocomposites was investigated for the reduction of 4-nitrophenol (4-NP), in the presence of sodium borohydride (NaBH4) as reducing agent in aqueous media