Synergistic activation of lamellar bismuth selenide anchored functionalized carbon nanofiber for detecting hazardous carbendazim in environmental water samples.

Autor: Jayapaul A; Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei, 10608, Taiwan., Lin YC; Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei, 10608, Taiwan; ZhongSun Co., LTD, New Taipei City 220031, Taiwan., Lin LY; Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei, 10608, Taiwan., Dhawan U; Centre for the Cellular Microenvironment, University of Glasgow, Glasgow, UK., Duann YF; Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei, 10608, Taiwan., Lee YH; Department of Mechanical Engineering, National Taipei University of Technology (Taipei Tech), Taipei, 10608, Taiwan., Liu TY; Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 243303, Taiwan; Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan City, 32003, Taiwan. Electronic address: tyliu0322@gmail.com., Sakthivel R; Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei, 10608, Taiwan. Electronic address: rajalakshmicnr@gmail.com., Chung RJ; Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei, 10608, Taiwan. Electronic address: rjchung@mail.ntut.edu.tw.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2024 May; Vol. 355, pp. 141744. Date of Electronic Publication: 2024 Mar 22.
DOI: 10.1016/j.chemosphere.2024.141744
Abstrakt: Pesticides pollute natural water reservoirs through persistent accumulation. Therefore, their toxicity and degradability are serious issues. Carbendazim (CBZ) is a pesticide used against fungal infections in agricultural crops, and its overexploitation detrimentally affects aquatic ecosystems and organisms. It is necessary to design a logical, efficient, and field-deployable method for monitoring the amount of CBZ in environmental samples. Herein, a nano-engineered bismuth selenide (Bi 2 Se 3 )/functionalized carbon nanofiber (f-CNF) nanocomposite was utilized as an electrocatalyst to fabricate an electrochemical sensing platform for CBZ. Bi 2 Se 3 /f-CNF exhibited a substantial electroactive surface area, high electrocatalytic activity, and high conductivity owing to the synergistic interaction of Bi 2 Se 3 with f-CNF. The structural chemical compositions and morphology of the Bi 2 Se 3 /f-CNF nanocomposite were confirmed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and field-emission scanning electron microscopy (FESEM). Electrochemical analysis was carried out using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV). The voltammetry and impedance experiments exposed that the Bi 2 Se 3 /f-CNF-modified GCE has attained adequate electrocatalytic function with amended features of electron transportation (R ct  = 35.93 Ω) and improved reaction sites (0.082 cm 2 ) accessible by CBZ moiety along with exemplary electrochemical stability (98.92%). The Bi 2 Se 3 /f-CNF nanocomposite exhibited higher sensitivity of 0.2974 μA μM -1 cm -2 and a remarkably low limit of detection (LOD) of 1.04 nM at a broad linera range 0.001-100 μM. The practicability of the nanocomposite was tested in environmental (tap and pond water) samples, which supports excellent signal amplification with satisfactory recoveries. Hence, the Bi 2 Se 3 /f-CNF nanocomposite is a promising electrode modifier for detecting CBZ.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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