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NaOH modified P(acrylamide) hydrogel matrices for in situ metal nanoparticles preparation and their use in H 2 generation from hydrolysis of NaBH 4
Author(s) -
Seven Fahriye,
Sahiner Nurettin
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.41106
Subject(s) - acrylamide , hydrolysis , amide , self healing hydrogels , metal , polymer chemistry , carboxylate , nanoparticle , metal ions in aqueous solution , polymerization , swelling , chemistry , in situ polymerization , materials science , polymer , nuclear chemistry , chemical engineering , monomer , organic chemistry , nanotechnology , composite material , engineering
ABSTRACT Crosslinked poly(acrylamide) (p(AAm)) as neutral hydrogel is synthesized via photo polymerization technique, and the amide groups within p(AAm) matrices are converted to strongly ionizable carboxylic acids groups via facile modification route by simple treatment of NaOH to obtained NaOH‐p(AAm) hydrogels. Because of the highly ionizable nature of carboxylate groups within mod‐p(AAm), the swelling and metal ion absorbing capacities are increased tremendously, almost 40 and 7.5 folds, respectively. The Co(II) and Ni(II) metal ions are loaded into NaOH‐p(AAm) hydrogels, and are treated with NaBH 4 to form corresponding metal nanoparticles in situ within mod‐p(AAm) matrices, and used in H 2 generation production from hydrolysis of NaBH 4 . Various parameters such as functionality of polymeric matrices, the kinds and the amount of metal nanoparticles, and the temperature effecting the H 2 generation are investigated. Comparable low E a with the similar researches in the literature, E a = 20.07 ± 0.05 kJ mol −1 is obtained in NaBH 4 hydrolysis catalyzed by NaOH‐p(AAM)‐Co composite system. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 41106.