Electrocatalytic detection of noxious antioxidant diphenylamine in fruit samples with support of Cu@nanoporous carbon modified sensor

Mani Sivakumar; Balamurugan Muthukutty; Tse-Wei Chen; Shen-Ming Chen; Alangadu Kothandan Vivekanandan; Shih-Hsun Chen; Mohammad Rafe Hatshan; M Ajmal Ali; Mohanraj Kumar

doi:10.1016/j.chemosphere.2021.133400

Electrocatalytic detection of noxious antioxidant diphenylamine in fruit samples with support of Cu@nanoporous carbon modified sensor

Chemosphere. 2022 Apr:292:133400. doi: 10.1016/j.chemosphere.2021.133400. Epub 2021 Dec 30.

Authors

Mani Sivakumar¹, Balamurugan Muthukutty², Tse-Wei Chen³, Shen-Ming Chen⁴, Alangadu Kothandan Vivekanandan⁵, Shih-Hsun Chen⁵, Mohammad Rafe Hatshan⁶, M Ajmal Ali⁷, Mohanraj Kumar⁸

Affiliations

¹ Advanced Membrane Materials Research Center, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, No:43, Section 4, Keelung Road, Taipei, 106, Taiwan, Republic of China.
² Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, Republic of China.
³ Department of Materials, Imperial College London, London, SW7 2AZ, United Kingdom.
⁴ Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, Republic of China. Electronic address: smchen78@ms15.hinet.net.
⁵ Nano Manufacturing and Surface Treatment Lab, Department of Mechanical Engineering, National Taiwan University of Science and Technology, No:43, Section 4, Keelung Road, Taipei, 106, Taiwan, Republic of China.
⁶ Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
⁷ Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
⁸ Department of Environmental Engineering and Management, Chaoyang University and Technology, 168, Jifeng E. Rd., Wufeng District, Taichung, 41349, Taiwan.

PMID: 34974048
DOI: 10.1016/j.chemosphere.2021.133400

Abstract

Herein, the facile synthesis of copper(II) and benzene-1,3,5-tricarboxylate (Cu-BTC) and copper nanoporous carbon (Cu@NPC) for the electrochemical detection of diphenylamine (DPA) was systematically investigated. The Cu-BTC and Cu@NPC materials structural, morphological, and thermal stability were evaluated and confirmed using FE-SEM, HR-TEM, XRD, FT-IR, and TGA. The electrocatalytic behavior of sensor materials was examined by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). It is presumed that the structural stability and synergic effect exhibited in Cu@NPC are favorable for enhanced sensitivity and selectivity towards the detection of DPA. The Cu@NPC exhibited a wide linear range (0.09-396.82 μM) and the lowest limit of detection (5 nM). Furthermore, the real sample analysis of the sensor for the detection of DPA in apples and pears confirms its potential capability in practical application.

Keywords: Diphenylamine; Electrochemical sensor; MOF; Nanoporous carbon; Real sample analysis.

MeSH terms

Antioxidants
Carbon*
Copper
Diphenylamine
Electrochemical Techniques
Electrodes
Fruit
Limit of Detection
Nanopores*
Spectroscopy, Fourier Transform Infrared

Substances

Antioxidants
Carbon
Copper
Diphenylamine