A molecularly-imprinted-electrochemical-sensor modified with nano-carbon-dots with high sensitivity and selectivity for rapid determination of glucose

2018 ◽  
Vol 555 ◽  
pp. 42-49 ◽  
Author(s):  
Wei Zheng ◽  
Haiyan Wu ◽  
Yan Jiang ◽  
Jicheng Xu ◽  
Xin Li ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Carbon Dots ◽  
Rapid Determination ◽  
High Sensitivity ◽  
Molecularly Imprinted ◽  
Sensitivity And Selectivity ◽  
Nano Carbon

Electrochemical Sensor Based on Molecularly Imprinted Carbon Nanotubes for Selective Determination of Bisphenol A

2013 ◽  
Vol 303-306 ◽  
pp. 170-179
Author(s):  
Hui Min Zhao ◽  
Ya Qiong Chen ◽  
Hong Bo Cheng ◽  
Fang Yuan ◽  
Xie Quan
Keyword(s):  
Carbon Nanotubes ◽  
Bisphenol A ◽  
Electrochemical Sensor ◽  
High Sensitivity ◽  
Molecularly Imprinted ◽  
Multi Wall Carbon Nanotubes ◽  
Selective Determination ◽  
Sensitivity And Selectivity ◽  
Modified Sensor

Based on the unique electronic properties and high adsorption capacity of carbon nanotubes, as well as the specific recognition ability of molecularly imprinted polymers, a novel molecularly imprinted carbon nanotubes electrochemical sensor with high sensitivity and selectivity was developed for bisphenol A (BPA) determination in water. The sensor was fabricated by directly thermalpolymerising molecularly imprinted film on a multi-wall carbon nanotubes (MWNTs) modified glassy carbon electrode (GCE). The linear sweep voltammogram of BPA on this sensor exhibited a well defined anodic peak. Under optimum conditions, the oxidation peak currents were linear to the concentration of BPA in the range of 0.1 mg/L-10.0 mg/L with a correlation coefficient of 0.9987 and a detection limit of 24.2 μg/L (S/N = 3). The proposed electrode exhibited good sensitivity and selectivity, and provided operation and store stability for the determination of BPA. The experiment results indicated a good potential application of the modified sensor in the detection of BPA.

scholarly journals Sensitive and selective detection of the highly toxic pesticide carbofuran in vegetable samples by a molecularly imprinted electrochemical sensor with signal enhancement by AuNPs

RSC Advances ◽  
2018 ◽  
Vol 8 (45) ◽  
pp. 25334-25341 ◽  
Author(s):  
Peipei Qi ◽  
Jiao Wang ◽  
Xiangyun Wang ◽  
Zhiwei Wang ◽  
Hao Xu ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
High Sensitivity ◽  
Signal Enhancement ◽  
Selective Detection ◽  
Molecularly Imprinted ◽  
Vegetable Samples ◽  
Sensitivity And Selectivity

An imprinted electrochemical sensor was constructed for the detection of carbofuran with high sensitivity and selectivity.

scholarly journals Highly Selective Electrochemiluminescence Sensor Based on Molecularly Imprinted-quantum Dots for the Sensitive Detection of Cyfluthrin

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 884 ◽  
Author(s):  
Jinjin Xu ◽  
Rongrong Zhang ◽  
Chenxi Liu ◽  
Aili Sun ◽  
Jiong Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Rapid Determination ◽  
High Sensitivity ◽  
Multiwall Carbon Nanotube ◽  
Molecularly Imprinted ◽  
Grafting Technique ◽  
Seawater Samples ◽  
Multiwall Carbon ◽  
High Sensitivity Detection

A highly selective and sensitive molecularly imprinted electrochemiluminescence (MIECL) sensor was developed based on the multiwall carbon nanotube (MWCNT)-enhanced molecularly imprinted quantum dots (MIP-QDs) for the rapid determination of cyfluthrin (CYF). The MIP-QDs fabricated by surface grafting technique exhibited excellent selective recognition to CYF, resulting in a specific decrease of ECL signal at the MWCNT/MIP-QD modified electrode. Under optimal conditions, the MIECL signal was proportional to the logarithm of the CYF concentration in the range of 0.2 µg/L to 1.0 × 103 µg/L with a determination coefficient of 0.9983. The detection limit of CYF was 0.05 µg/L, and good recoveries ranging from 86.0% to 98.6% were obtained in practical samples. The proposed MIECL sensor provides a novel, rapid, high sensitivity detection strategy for successfully analyzing CYF in fish and seawater samples.

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