Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Development of Sensitive Electrochemical Sensor Based on Chi-Tosan/MWCNTs-AuPtPd Nanocomposites for Detection of Bisphenol A

Version 1 : Received: 25 April 2023 / Approved: 25 April 2023 / Online: 25 April 2023 (04:23:09 CEST)

A peer-reviewed article of this Preprint also exists.

Han, E.; Pan, Y.; Li, L.; Liu, Y.; Gu, Y.; Cai, J. Development of Sensitive Electrochemical Sensor Based on Chitosan/MWCNTs-AuPtPd Nanocomposites for Detection of Bisphenol A. Chemosensors 2023, 11, 331. Han, E.; Pan, Y.; Li, L.; Liu, Y.; Gu, Y.; Cai, J. Development of Sensitive Electrochemical Sensor Based on Chitosan/MWCNTs-AuPtPd Nanocomposites for Detection of Bisphenol A. Chemosensors 2023, 11, 331.

Abstract

A sensitive electrochemical sensor based on AuPtPd trimetallic nanoparticles functionalized multi-walled carbon nanotubes coupled with chitosan modified glassy carbon electrode (GCE/CS/MWCNTs-AuPtPd) for the rapid detection of bisphenol A (BPA) was proposed. AuPtPd trimetallic nanoparticles were first assembled on MWCNTs to obtain MWCNTs-AuPtPd nanocomposite. Then the MWCNTs-AuPtPd was further dispersed on the surface of chitosan modified electrode surface to fabricate the GCE/CS/MWCNTs-AuPtPd sensor. Due to the superior catalytic properties of MWCNTs-AuPtPd and the good film formation of chitosan, the constructed sensor displayed good performances for BPA detection. The structural morphology of CS/MWCNTs-AuPtPd was characterized by many methods, such as SEM, UV-vis and TEM. Under the optimal conditions, the designed sensor showed a linear range from 0.05 to 100 µM for BPA detecting with a low detection limit of 1.4 nM. The designed sensor was further used to realize the determination of BPA in real samples and the recoveries ranged from 94.4% to 103.6%. The results demonstrated that the electrochemical sensor designed by CS/MWCNTs-AuPtPd nanocomposites was reliable and could be a useful tool for the monitoring of food safety.

Keywords

Nanozyme; Metallic nanocomposite; Bisphenol A; Electrochemical sensors

Subject

Chemistry and Materials Science, Analytical Chemistry

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