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Dual‐Functional Grafted Electrospun Polymer Microfiber Scaffold Hosted Palladium Nanoparticles for Catalyzing Redox Reactions
Author(s) -
Chappa Sankararao,
Bharath Rajaghatta Sundararam,
Oommen Charlie,
Pandey Ashok K.
Publication year - 2017
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201600555
Subject(s) - polymer chemistry , hydrazine (antidepressant) , electrospinning , microfiber , polymer , materials science , chemistry , chemical engineering , organic chemistry , chromatography , engineering
Porous poly(ether sulfone) (PES) microfiber mat has been prepared by electrospinning technique using the optimized conditions. The reducing moiety has been attached covalently to the PES microfiber mat by UV‐graft polymerization of glycidylmethacrylate, and reacting subsequently with hydrazine via epoxy ring opening. The grafted polymer shell around porous microfiber has been found to perform the reduction of precursor ions by grafted hydrazine which leads to the nucleation and growth of Pd nanoparticles (NPs) on the host matrix itself. The catalytic activities and reduction kinetics of the microfiber hosted Pd NPs have been examined in the reductions of Cr VI and U VI ions with in situ hydrogen generated by the formic acid decomposition at 50 °C, and p ‐nitrophenol with borohydride/hydrazine at room temperature. Thus, hosted Pd NPs exhibit higher catalytic activity with respect to that reported in literature, and also the host matrix provides reasonably good recyclability and shelf‐life to Pd NPs.