Molecularly imprinted sensor based on carboxylated carbon nanotubes/Keggin-type polyoxometalates nanocomposite for the detection of furazolidone  

作　　者：Yu-Lan Huang Bing Zhang Yu-Lian Li Li Wang Le Dong Jian Li 

机构地区：[1]College of Ocean Food and Biological Engineering,Jimei University,Xiamen 361021,China [2]College of Oceanology and Food Science,Quanzhou Normal University,Quanzhou 362000,China

出　　处：《Tungsten》2024年第2期394-409,共16页钨科技（英文）

基　　金：Supported by the National Natural Science Foundation of China(Grant No.22271119).

摘　　要：Due to its properties of mutagenic,teratogenic,and carcinogenic,the detection of furazolidone(FZD)in aquaculture is of great importance for food safety and human health.In this study,molecularly imprinted fi lms modifi ed with carboxylated multi-walled carbon nanotube-phosphomolybdic acid composite were used to fabricate an electrochemical sensor for the determination of FZD.The nanocomposites were characterized using infrared spectroscopy,scanning electron microscopy,energy-dispersive X-ray spectroscopy,and X-ray diff raction.The electrochemical characteristics of the modifi ed electrodes were examined using electrochemical impedance spectroscopy,cyclic voltammetry,and diff erential pulse voltammetry.The sensor exhibited exceptional catalytic performance.The calibration curves were acquired in the concentration range of 6 nmol·L^(−1)to 0.6μmol·L^(−1),with a limit of detection of 3.38 nmol·L^(−1).Additionally,the sensor proved successful in recognizing FZD in shrimp samples with satisfactory recoveries and precision.The method provides a strategy to construct a molecularly imprinted electrochemical sensing platform using nanomaterials,which has great promise in the field of food safety.

关 键 词：PHOSPHOMOLYBDATE FURAZOLIDONE POLYOXOMETALATES Carboxylated multi-walled carbon nanotube Molecularly imprinted polymers Electrochemical sensor 

分 类 号：TS207.3[轻工技术与工程—食品科学] O657.1[轻工技术与工程—食品科学与工程] TB332[理学—分析化学]