文献类型：期刊文献

英文题名：A robust electrochemical sensing of molecularly imprinted polymer prepared by using bifunctional monomer and its application in detection of cypermethrin

作者：Li, Yangguang[1];Zhang, Lu[2];Dang, Yanyan[1];Chen, Zongqin[4];Zhang, Ruyue[5];Li, Yingchun[2];Ye, Bang-Ce[1,3]

机构：[1]Shihezi Univ, Sch Chem & Chem Engn, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Shihezi, Peoples R China;[2]Harbin Inst Technol, Coll Sci, Shenzhen 518055, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[4]Shihezi Univ, Normal Coll, Shihezi, Peoples R China;[5]Shihezi Univ, Minist Educ, Key Lab Xinjiang Phytomed Resource & Utilizat, Shihezi 832000, Peoples R China

年份：2019

卷号：127

起止页码：207

外文期刊名：BIOSENSORS & BIOELECTRONICS

收录：;EI(收录号：20190106336522);WOS:【SCI-EXPANDED(收录号:WOS:000457508800029)】；

基金：The project financially supported by National Natural Science Foundation of China (81773680 and 21575089) and Scientific Research Foundation for Changjiang Scholars of Shihezi University (CJXZ201501).

语种：英文

外文关键词：Ag and N co-doped zinc oxide; Response surface method; Activated carbon; Dual functional monomers; Molecularly imprinted polymer; Electrochemical sensor

摘要：This work describes a hybrid electrochemical sensor for highly sensitive detection of pesticide cypermethrin (CYP). Firstly, Ag and N co-doped zinc oxide (Ag-N@ZnO) was produced by sol-gel method, and then Ag-N@ZnO was ultrasonically supported on activated carbon prepared from coconut husk (Ag-N@ZnO/CHAC). Finally, a layer of molecularly imprinted polymer (MIP) was in situ fabricated on glassy carbon electrode by electro-polymerization, with dopamine and resorcinol as dual functional monomers (DM), CYP acting as template (DMMIP-Ag-N@ZnO/CHAC). Morphological features, composition information and electrochemical properties of DM-MIP-Ag-N@ZnO/CHAC were investigated in detail. It is worth to mention that for the first time response surface method was used to investigate the effect of double monomers and to optimize the ratio between template and monomers. Compared with typical one-monomer involving MW, the MIP prepared with dual functional monomers (DMMIP) of monomers showed higher response and better selectivity. Under the optimal conditions, a calibration curve of current shift versus concentration of CYP was obtained in the range of 2 x 10(-13)-8 x 10(-9) M, and the developed sensor gave a remarkably low detection limit (LOD) of 6.7 x 10(-14) M (S/N = 3). Determination of CYP in real samples was conducted quickly and accurately with our sensor. The DMMIP-Ag-N@ZnO/CHAC electrochemical sensor proposed in this paper has great potential in food safety, drug residue determination and environmental monitoring.