Biomimicking, metal-chelating and surface-imprinted polymers for the degradation of pesticides

Erdem M., SAY R., Ersoz A., DENİZLİ A., Turk H.

REACTIVE & FUNCTIONAL POLYMERS, cilt.70, sa.4, ss.238-243, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 70 Sayı: 4
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.reactfunctpolym.2009.12.005
  • Dergi Adı: REACTIVE & FUNCTIONAL POLYMERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.238-243
  • Hacettepe Üniversitesi Adresli: Evet

Özet

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.