Design a high sensitive electrochemical sensor based on immobilized cysteine on Fe3O4@Au core-shell nanoparticles and reduced graphene oxide nanocomposite for nitrite monitoring

Riahifar, Vahid; Haghnazari, Nahid; Keshavarzi, Fatemeh; Nasri, Fariborz

doi:10.1016/j.microc.2021.106217

Cited by 22 publications

(11 citation statements)

References 49 publications

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“…− is a completely irreversible process controlled by kinetics. 53,56 Therefore, to ensure higher analytical performance of the electrochemical sensor, pH 7.0 is selected as the optimal condition for sensitively detecting nitrite in subsequent experiments.…”

Section: Resultsmentioning

confidence: 99%

High Sensitivity Detection of Nitrite Electrochemical Sensor Modified with MOF Composite Materials

Li,

Zou,

Chen

et al. 2023

J. Electrochem. Soc.

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Depositing composites of Ni-HHTP and MWCNTs on a glassy carbon electrode(GCE) have developed a sensitive and facile electrochemical sensor for nitrite detection. Ni-HHTP@MWCNTs composites were synthesized in situ using 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP), nickel acetate tetrahydrate Ni(OAc)2·4H2O and multi-walled carbon nanotubes (MWCNTs) by hydrothermal method. The composite electrode was prepared by the coating method. The synergistic combination of Ni-HHTP and MWCNTs enables the electrode to possess fast electronic conductivity and generate sensitive electrochemical signals for sodium nitrite (NaNO2). The controlled variable approach determines the best test conditions for the analyte and obtains a susceptible response signal. The composite electrode has an extensive linear response range of 1–10000 μM to NaNO2, with a detection limit of 0.95 μM and sensitivity of 0.96 mA·mM−1·cm−2, which shows excellent reproducibility and stability performance. There are no interferences from the most common ions. The electrochemical analysis method was used for nitrite detection in actual water samples with a recovery rate of 97.2%–103.7%, indicating this composite material’s practical application potential. The mechanism of the specific electrochemical process on the modified electrode was also explored. This work preliminarily explored new electrochemical sensors for high-precision nitrite detection and precise sensing in analysis tests.

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Section: Resultsmentioning

confidence: 99%

High Sensitivity Detection of Nitrite Electrochemical Sensor Modified with MOF Composite Materials

Li,

Zou,

Chen

et al. 2023

J. Electrochem. Soc.

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“…The method reported by Riahifar et al 26 was used for core–shell synthesis. Briefly, 20 mL of a suspension of ZnO nanoparticles was transferred to a 250 mL round-bottomed flask and heated until boiling.…”

Section: Methodsmentioning

confidence: 99%

Dopamine levels determined in synthetic urine using an electrochemical tyrosinase biosensor based on ZnO@Au core–shell

Beatto,

Gomes,

Etchegaray

et al. 2023

RSC Adv.

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“…The effective combination of Fe 3 O 4 @Au with rGO resulted in reduced surface oxidation overpotentials and provided additional conduction pathways for electron transfer. 27…”

Section: Introductionmentioning

confidence: 99%

“…The effective combination of Fe 3 O 4 @Au with rGO resulted in reduced surface oxidation overpotentials and provided additional conduction pathways for electron transfer. 27 Herein, the green synthesized Fe 3 O 4 @Au was modified onto the GCE by electrodeposition. And, utilizing the layer-by-layer (LbL) method, P 2 W 17 V was alternatively covered to Fe 3 O 4 @Au/ GCE with PEI to generate a composite film [P 2 W 17 V/PEI] n / Fe 3 O 4 @Au/GCE.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of composite film modified electrodes based on vanadium-substituted tungstophosphate with Fe₃O₄@Au for electrochemical detection of sodium nitrite

Liu,

Xing,

Guan

et al. 2024

New J. Chem.

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Design a high sensitive electrochemical sensor based on immobilized cysteine on Fe3O4@Au core-shell nanoparticles and reduced graphene oxide nanocomposite for nitrite monitoring

Cited by 22 publications

References 49 publications

High Sensitivity Detection of Nitrite Electrochemical Sensor Modified with MOF Composite Materials

High Sensitivity Detection of Nitrite Electrochemical Sensor Modified with MOF Composite Materials

Dopamine levels determined in synthetic urine using an electrochemical tyrosinase biosensor based on ZnO@Au core–shell

Facile fabrication of composite film modified electrodes based on vanadium-substituted tungstophosphate with Fe₃O₄@Au for electrochemical detection of sodium nitrite

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Design a high sensitive electrochemical sensor based on immobilized cysteine on Fe3O4@Au core-shell nanoparticles and reduced graphene oxide nanocomposite for nitrite monitoring

Cited by 22 publications

References 49 publications

High Sensitivity Detection of Nitrite Electrochemical Sensor Modified with MOF Composite Materials

High Sensitivity Detection of Nitrite Electrochemical Sensor Modified with MOF Composite Materials

Dopamine levels determined in synthetic urine using an electrochemical tyrosinase biosensor based on ZnO@Au core–shell

Facile fabrication of composite film modified electrodes based on vanadium-substituted tungstophosphate with Fe3O4@Au for electrochemical detection of sodium nitrite

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Product

Resources

About

Facile fabrication of composite film modified electrodes based on vanadium-substituted tungstophosphate with Fe₃O₄@Au for electrochemical detection of sodium nitrite