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Title: Polyelectrolyte induced formation of silver nanoparticles in copolymer hydrogel and their application as catalyst

Highlights: • A simple route for the in situ preparation of Ag nanoparticles has been developed. • The Ag loaded hydrogel showed catalytic activity for reduction of 4-nitrophenol. • The catalyst can be recovered by simple separation and showed good recyclability. - Abstract: A simple route for the in situ preparation of catalytically active Ag nanoparticles (NPs) in hydrogel networks has been developed. The electronegativity of the amide and carboxyl groups on the poly(acrylamide-co-acryl acid) chains caused strong binding of the Ag{sup +} ions which made the ions distribute uniformly inside the hydrogels. When the Ag{sup +} loaded hydrogels were immersed in NaBH{sub 4} solution, the Ag{sup +} ions on the polymer networks were reduced to Ag NPs. The resultant hydrogel showed good catalytic activity for the reduction of a common organic pollutant, 4-nitrophenol, with sodium borohydride. A kinetic study of the catalytic reaction was carried out and a possible reason for the decline of the catalytic performance with reuse is proposed.
Authors:
 [1] ;  [2] ; ;  [2] ; ;  [1] ;  [2]
  1. Department of Applied Chemistry, Yuncheng University, Yuncheng 044000 (China)
  2. Department of Chemistry, School of Science, Tianjin University, Tianjin 300072 (China)
Publication Date:
OSTI Identifier:
22475907
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 70; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ACRYLAMIDE; CATALYSTS; COMPOSITE MATERIALS; COPOLYMERS; ELECTRON MICROSCOPY; ELECTRONEGATIVITY; HYDROGELS; NANOPARTICLES; NANOSTRUCTURES; NITROPHENOL; PERFORMANCE; REDUCTION; SILVER; SODIUM