MOF / juniper leaf biochar hybrid for ultrasensitive and selective electrochemical detection of carbendazim in food
Abstract
In this work, we present a novel electrochemical sensor for carbendazim (CBZ) detection, based on an eco-friendly biochar (BC) derived from juniper leaves modified with UiO-66-NH 2 metal-organic framework (MOF). Moreover, the electrochemical activation of the UiO-66-NH2@BC composite, via cyclic voltammetry (CV), improves the number of active sites and improves the electrocatalytic properties and sensitivity for CBZ detection. The structural and elemental characteristics of the synthesized materials were comprehensively analyzed by Scanning Electron Microscopy coupled with Energy-Dispersive X-ray spectroscopy (SE-EDX), X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS), confirming the successful integration and preservation of both phases. Differential Pulse Voltammetry (DPV) demonstrated two linear concentration ranges (7.5 × 10 −9 - 2.5 × 10 −7 M and 2.5 × 10 −7 - 1 × 10 −6 M), with a detection limit of 4.9 × 10 −9 M, and high sensitivity (4.31 × 10 8 A M −1 cm −2 ). To verify the performance and applicability of our sensor in a real environment, we tested it on apple pulp, tomato pulp, and tap water, which gave acceptable recovery rates of 88 % to 114 % , demonstrating its ability to work in complex environments.
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BibTeX
@article{dhaffouli2026juniper,
title = {{MOF / juniper leaf biochar hybrid for ultrasensitive and selective electrochemical detection of carbendazim in food}},
author = {Afef Dhaffouli and Soledad Carinelli and Younes Moussaoui and Alejandro González-Orive and Pedro Salazar-Carballo and Houcine Barhoumi},
journal = {Talanta},
year = {2026},
month = oct,
doi = {10.1016/j.talanta.2026.129814},
url = {https://hal.science/hal-05829973v1},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - MOF / juniper leaf biochar hybrid for ultrasensitive and selective electrochemical detection of carbendazim in food
AU - Afef Dhaffouli
AU - Soledad Carinelli
AU - Younes Moussaoui
AU - Alejandro González-Orive
AU - Pedro Salazar-Carballo
AU - Houcine Barhoumi
PY - 2026
DA - 2026/10/21
JO - Talanta
DO - 10.1016/j.talanta.2026.129814
UR - https://hal.science/hal-05829973v1
AB - In this work, we present a novel electrochemical sensor for carbendazim (CBZ) detection, based on an eco-friendly biochar (BC) derived from juniper leaves modified with UiO-66-NH 2 metal-organic framework (MOF). Moreover, the electrochemical activation of the UiO-66-NH2@BC composite, via cyclic voltammetry (CV), improves the number of active sites and improves the electrocatalytic properties and sensitivity for CBZ detection. The structural and elemental characteristics of the synthesized materials were comprehensively analyzed by Scanning Electron Microscopy coupled with Energy-Dispersive X-ray spectroscopy (SE-EDX), X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS), confirming the successful integration and preservation of both phases. Differential Pulse Voltammetry (DPV) demonstrated two linear concentration ranges (7.5 × 10 −9 - 2.5 × 10 −7 M and 2.5 × 10 −7 - 1 × 10 −6 M), with a detection limit of 4.9 × 10 −9 M, and high sensitivity (4.31 × 10 8 A M −1 cm −2 ). To verify the performance and applicability of our sensor in a real environment, we tested it on apple pulp, tomato pulp, and tap water, which gave acceptable recovery rates of 88 % to 114 % , demonstrating its ability to work in complex environments.
SN - 0039-9140
ER -