Cadmium sensing with bentonite-modified carbon paste electrode: electrochemical insights

Mourak, Abdellah; Hajjaji, Mohamed; Idoulhi, Rachid; Khadiri, Mohy-Eddine; Abouelfida, Abdesselam

doi:10.1007/s10008-023-05702-8

Cited by 3 publications

(1 citation statement)

References 42 publications

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“…3C, representing the undoped amine units (-NH-) and imine units (-N=) at 399.65 and 400.75 eV, respectively. 30,31 The C=C and C-C-groups in terephthalic acid and polyaniline are responsible for the two peaks at 284. over Ca-MOF surface as shown in the TEM and SEM observations. The CV behaviour in Fig.…”

Section: Resultsmentioning

confidence: 99%

Ca-MOF-Polymer Modified Thin-Film Electrode for Detection of Toxic Cadmium (Cd²⁺) in Biofluid and Environmental Fluid

Richard,

Lincy,

Piraman

et al. 2024

J. Electrochem. Soc.

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Competitive adsorption of Cd2+ on the cell leads to different diseases like kidney damage and osteoporosis. It is crucial for Cd2+ intake that ambient and biofluid supplies of Cd2+ be contained. For this, a calcium-based metal organic framework (Ca-MOF) was developed by hydrothermal methods using bidendate 1,4-benzene dicarboxylic acid and Calcium derived from biowaste chicken egg shells. Lower binding efficiency of Cd2+ with the undoped MOF is improved by complexing it with polyaniline (PANI) to generate Ca-MOF-PANI which provide amine functional groups. These are characterized by cyclic voltammetry (CV), ultra-violet visible spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy spectroscopy. Electrochemical sensing showed an irreversible oxidation peak for Cd2+ at -0.75 V. The Ca-MOF-PANI showed higher Cd2+ sensing than the CaCO3, Ca-MOF, and PANI modified electrodes and confirmed by UV-Vis studies. The sensor showed lowest detection limit of 138 nM (25.3 ppb) with linearity range 0.1-2000 μM, respectively, high selectivity in presence of potential interferences, good reproducibility, stability, and repeatability features. Real sample analysis using urine and water samples indicates good signal recoveries ranged from 93.0 % to 112.0 %.

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Section: Resultsmentioning

confidence: 99%

Ca-MOF-Polymer Modified Thin-Film Electrode for Detection of Toxic Cadmium (Cd²⁺) in Biofluid and Environmental Fluid

Richard,

Lincy,

Piraman

et al. 2024

J. Electrochem. Soc.

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A comparative study of treated clay and synthesized Fe/ZSM-5 zeolite for application in the electrochemical reduction of chromium(VI) as an environmental sensor

El-kordy,

Nizar,

Tijani

et al. 2024

J Solid State Electrochem

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Investigating Cd2⁺ ion sensing with palygorskite-carbon paste electrodes: optimizing performance through Doehlert design

Mourak,

Hajjaji,

Idouhli

et al. 2024

J Solid State Electrochem

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Cadmium sensing with bentonite-modified carbon paste electrode: electrochemical insights

Cited by 3 publications

References 42 publications

Ca-MOF-Polymer Modified Thin-Film Electrode for Detection of Toxic Cadmium (Cd²⁺) in Biofluid and Environmental Fluid

Ca-MOF-Polymer Modified Thin-Film Electrode for Detection of Toxic Cadmium (Cd²⁺) in Biofluid and Environmental Fluid

A comparative study of treated clay and synthesized Fe/ZSM-5 zeolite for application in the electrochemical reduction of chromium(VI) as an environmental sensor

Investigating Cd2⁺ ion sensing with palygorskite-carbon paste electrodes: optimizing performance through Doehlert design

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Cadmium sensing with bentonite-modified carbon paste electrode: electrochemical insights

Cited by 3 publications

References 42 publications

Ca-MOF-Polymer Modified Thin-Film Electrode for Detection of Toxic Cadmium (Cd2+) in Biofluid and Environmental Fluid

Ca-MOF-Polymer Modified Thin-Film Electrode for Detection of Toxic Cadmium (Cd2+) in Biofluid and Environmental Fluid

A comparative study of treated clay and synthesized Fe/ZSM-5 zeolite for application in the electrochemical reduction of chromium(VI) as an environmental sensor

Investigating Cd2⁺ ion sensing with palygorskite-carbon paste electrodes: optimizing performance through Doehlert design

Contact Info

Product

Resources

About

Ca-MOF-Polymer Modified Thin-Film Electrode for Detection of Toxic Cadmium (Cd²⁺) in Biofluid and Environmental Fluid

Ca-MOF-Polymer Modified Thin-Film Electrode for Detection of Toxic Cadmium (Cd²⁺) in Biofluid and Environmental Fluid