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Nickel(II)‐imprinted monolithic columns for selective nickel recognition
Author(s) -
Demiralay Ebru Çubuk,
Andac Muge,
Say Rıdvan,
Alsancak Guleren,
Denizli Adil
Publication year - 2010
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.32269
Subject(s) - monolith , nickel , adsorption , materials science , polymerization , selectivity , methacrylate , monomer , resorcinol , aqueous solution , nuclear chemistry , monolithic hplc column , polymer chemistry , polymer , chemistry , catalysis , chromatography , organic chemistry , high performance liquid chromatography , metallurgy , composite material
Ni 2+ ‐imprinted monolithic column was prepared for the removal of nickel ions from aqueous solutions. N ‐Methacryloyl‐ L ‐histidine was used as a complexing monomer for Ni 2+ ions in the preparation of the Ni 2+ ‐imprinted monolithic column. The Ni 2+ ‐imprinted poly(hydroxyethyl methacrylate‐ N ‐methacryloyl‐ L ‐histidine) (PHEMAH) monolithic column was synthesized by bulk polymerization. The template ion (Ni 2+ ) was removed with a 4‐(2‐pyridylazo) resorcinol (PAR):NH 3 NH 4 Cl solution. The water‐uptake ratio of the PHEMAH–Ni 2+ monolith increased compared with PHEMAH because of the formation of nickel‐ion cavities in the polymer structure. The adsorption of Ni 2+ ions on both the PHEMAH–Ni 2+ and PHEMAH monoliths were studied. The maximum adsorption capacity was 0.211 mg/g for the PHEMAH–Ni 2+ monolith. Fe 3+ , Cu 2+ , and Zn 2+ ions were used as competitive species in the selectivity experiments. The PHEMAH–Ni 2+ monolithic column was 268.8, 25.5, and 10.4 times more selective than the PHEMAH monolithic column for the Zn 2+ , Cu 2+ , and Fe 3+ ions, respectively. The PHEMAH–Ni 2+ monolithic column could be used repeatedly without a decrease in the Ni 2+ adsorption capacity. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010