分析化学2012，Vol.40Issue(7)：1025-1030,6.DOI:10.3724/SP.J.1096.2012.11222
基于门控制电催化效应的分子印迹传感器
A Molecularly Imprinting Sensor Based on Gate Controlled Electro-catalyzation
摘要
Abstract
Molecularly imprinted polymer (MIP) was synthesized on the surface of Ni electrode with the template molecules of chlortoluron. After elution, some of the imprinted cavities in MIP can re-bind with chlortoluron molecules. Hydrogen peroxide, which acts as the probe, can enter into the left cavities and are reduced on the Ni electrode surface to form "gate controlled electro-reduction". The MIP sensor can be used to detect chlortoluron with high sensitivity due to the highly electrochemically catalytic reduction of H2O2 on the Ni electrode. The mole ratio of template molecules, functional monomer and cross-linking agent in molecular imprinted polymer film was found to be l:12:30, re-adsorption time was 10 min and the optimum pH value was 7. 2. Chlortoluron could be analyzed in the range of 1.0×10-4～4.0× 10-7 mol/L with a detection limit of 2. 9 × 10-8 mol/L. In addition, the feasibility of the practical applications of the MIP sensor has been demonstrated in the analysis of water samples and showed good recovery, ranging from 97% to 103%.关键词
分子印迹传感器/电催化/门控制/绿麦隆/镍电极Key words
Molecularly imprinting sensor/ Electro-catalyzation/ Gate controlled/ Chlortoluron/ Nickel electrode引用本文复制引用
张连明,李建平,潘宏程..基于门控制电催化效应的分子印迹传感器[J].分析化学,2012,40(7):1025-1030,6.基金项目
本文系国家自然科学基金(No.21165007)资助 （No.21165007）
