Xiaoning Liao

Abstract Herein, an organometallic Au(III) catalyst was easily prepared via self‐assembly method using chloroauric acid (HAuCl 4 ) and cetyltrimethylammonium bromide (CTAB). The electrode fabricated by the catalyst not only shows extended anodic potential window compared to that of Au nanoparticle‐based electrode, but also possess the high electrocatalytic activity in the selective oxidation of Ochratoxin A. Under optimized conditions, the modified electrode exhibits a wide linearity range from 1.0×10 −7 to 1.0×10 −5 mol/L and a low detection limit of 2.9×10 −8 mol/L (S/N=3). Furthermore, the electrochemical sensor possesses good recoveries between 93.5 % and 98.2 % in real sample analysis, indicating high accuracy in real sample analysis.

Chloroauric acid

Electrochemical gas sensor

10.1002/elan.202100238

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Citations (1)

Highly Sensitive Detection of Carbendazim and Its Electrochemical Oxidation Mechanism at a Nanohybrid Sensor

Journal of The Electrochemical Society (2019)

Xiaoning Liao Zhiwen Huang Kai Huang Mei Qiu Fuliang Chen

Sensitive and rapid detection of pesticides in food has become an important and crucial research area due to the extensive use of agriculture residues and stringent environmental protection acts. In present work, an electrochemical nanohybrid sensor was facilely developed based on carboxymethyl cellulose (CMC) fuctionalized carbon nanotubes (CNTs). The sensor shows high sensitivity, excellent stability and good anti-interference capability in the detection of carbendazim (MBC) by differential pulse voltammetry method. Under optimized conditions, it exhibits a wide linearity of 0.03 μmol·L−1 – 10 μmol·L−1 with a low detection limit of 0.015 μmol·L−1. In real samples analyses for peer and kiwifruit, the proposed sensor shows good recoveries which are comparable with that of the conventional HPLC method. In addition, the oxidation mechanism of MBC at the nanohybrid sensor was studied using voltammetric methods and validated according to the density functional theory (DFT) calculation. The results reveal that the oxidation of carbendazim is a typical adsorption-controlled electrochemical oxidation process proceeding with four protons and four electrons. The proposed nanohybrid sensor is a promising alternative to the currently used methods for carbendazim detection and our results provide a new insight in MBC electrochemical oxidation mechanism.

Electrochemical gas sensor

Differential pulse voltammetry

10.1149/2.0251906jes

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Citations (58)

Facile preparation of ultra stable polymer-based sensor for highly sensitive and selective detection of paraquat in agricultural products

Microchemical Journal (2024)

Huixin Zhou Yuzhen Wang Liting Xu Ying Zhou Yanping Hong

Nafion

Biofouling

Electrochemical gas sensor

Repeatability