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Preparation of polyelectrolyte‐stabilized silver nanoparticles for catalytic applications
Author(s) -
Viswanathan Perumal,
Ramaraj Ramasamy
Publication year - 2017
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5178
Subject(s) - silver nanoparticle , polyelectrolyte , sodium borohydride , silane , diethylenetriamine , catalysis , amine gas treating , chemistry , surface modification , polymer chemistry , silanes , nuclear chemistry , nanoparticle , materials science , organic chemistry , nanotechnology , polymer
A facile and green method is developed for the preparation of polyelectrolyte‐stabilized silver nanoparticles ( AgNPs ) using dopamine as a reducing agent. The AgNPs were prepared in the presence of the polyelectrolyte poly[acrylamide‐ co ‐(diallyldimethylammonium chloride)] ( PADA ) and amine‐functionalized silane matrices. Interestingly, only amine‐functionalized silanes led to AgNPs in the presence of PADA , whereas silane without amine functionalization failed to produce them. The catalytic ability of the AgNPs was investigated by adopting a benchmark reaction, i.e. reduction of 4‐nitrophenol in the presence of sodium borohydride. It was found that PADA ‐Ag(0.1)‐ TPDT ( TPDT = N ‐[3‐(trimethoxysilyl)propyl]diethylenetriamine) showed better catalytic activity when compared to other silver concentrations of 0.05, 0.5 and 1 mmol L −1 . Remarkably, a very high normalized rate constant, 20 374 s −1 g −1 , was observed for PADA ‐Ag(0.1)‐ TPDT . © 2016 Society of Chemical Industry