Journal
REACTIVE & FUNCTIONAL POLYMERS
Volume 70, Issue 4, Pages 238-243Publisher
ELSEVIER
DOI: 10.1016/j.reactfunctpolym.2009.12.005
Keywords
Paraoxon destruction; Molecular imprinting; Heterogeneous catalysis; Polymer catalysts
Funding
- Turkish State Planning Agency (DPT)
- Commission of Scientific Research Projects of Anadolu University
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Molecularly imprinted polymer beads (PlBs) and non-imprinted (control) polymer beads (NIBs) have been prepared from methacryloylhistidine-Co2+, -Ni2+, and -Zn2+ monomers and applied as catalyst in the hydrolysis of paraoxon which is an organophosphate ester and used as a pesticide. The PlBs were prepared by a molecular surface imprinting technique. The catalytic performance of these polymers having Co2+, Ni2+ and Zn2+ ions in their catalytic active centers was evaluated according to the enzyme kinetic model of Michaelis-Menten and their activities were compared to each other. PlBs always showed higher catalytic activities than NIBs analogues. In addition, the imprinted polymers of methacryloylhistidine Co2+, -Ni2+, or -Zn2+ complexes provided hydrolysis rate enhancements by a factor of 356, 241, and 95, respectively, compared to the rate in non-catalyzed media that contains only buffer. (c) 2010 Published by Elsevier Ltd.
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