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

Journal Article · Thu Oct 15 04:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.04.028· OSTI ID:22475907

He, Yongqiang ^[1]; Huang, Guanbo ^[2]; Pan, Zeng; Liu, Yue ^[2]; Gong, Qiaojuan; Yao, Chenzhong ^[1]; Gao, Jianping ^[2]

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1. Department of Applied Chemistry, Yuncheng University, Yuncheng 044000 (China)
2. Department of Chemistry, School of Science, Tianjin University, Tianjin 300072 (China)

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.

• OSTI ID: 22475907
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 70; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ACRYLAMIDE
CATALYSTS
COMPOSITE MATERIALS
COPOLYMERS
ELECTRON MICROSCOPY
ELECTRONEGATIVITY
HYDROGELS
NANOPARTICLES
NANOSTRUCTURES
NITROPHENOL
PERFORMANCE
REDUCTION
SILVER
SODIUM