Simultaneous Electrochemical Detection of Dopamine and Uric Acid Using Zn/Al-Layered Double Hydroxide-Modified Carbon Paste Electrodes

Journal of The Electrochemical Society, Год журнала: 2025, Номер 172(5), С. 057513 - 057513

Опубликована: Май 1, 2025

Here, a carbon paste modified electrode (CPME) with Zn/Al-layered double hydroxide (Zn/Al-LDH) was developed for the simultaneous electrochemical detection of dopamine (DA) and uric acid (UA). The surface morphology structural features synthesized Zn/Al-LDH were analyzed using scanning electron microscopy X-ray diffraction analysis. LDH-modified sensor exhibited enhanced adsorptive properties, significantly improving preconcentration targets. Electrochemical characterization square wave voltammetry demonstrated that structure plays crucial role in increasing sensitivity due to its high area favorable electrostatic interactions by separate from cell. Under optimized conditions (preconcentration pH 6.0 an cell 7.0), excellent linearity across biologically relevant concentrations, ranging 0.2 20 μM, phosphate-buffered saline (PBS), synthetic urine, cerebrospinal fluid, limits 68 nM UA 71 DA. Recovery studies confirmed sensor’s reliability complex biological matrices, recoveries 90% 120%. Compared existing sensors, Zn/Al CPE offers promising, selective, efficient platform neurotransmitter metabolite analysis samples.

Язык: Английский

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High sensitive electrochemical sensor for sunset yellow detection in drink based on Co4(PW9O34)2@PPy-MWCNTs nanocomposite

Microchemical Journal, Год журнала: 2025, Номер unknown, С. 114130 - 114130

Опубликована: Май 1, 2025

Язык: Английский

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An Electrochemical Sensor Based On 2D Graphitic-phase Carbon Nitride Nanosheets Doped With FeP-C Nanospheres for the Detection of Cu2+ in Meat

Food Analytical Methods, Год журнала: 2024, Номер unknown

Опубликована: Дек. 18, 2024

Язык: Английский

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Electrochemical sensing of uric acid at cerium oxide poly (Congo red) modified carbon paste electrode

Sensing Technology, Год журнала: 2024, Номер 2(1)

Опубликована: Дек. 23, 2024

Aim: In this work, cerium oxide nanoparticles were synthesized and electrochemically polymerized by treatment with 25 mM Congo red. The developed poly red used to modified the carbon paste electrode for sensing bioactive molecules, as well antibacterial antimalarial drugs. Methods: (CeO2 NPs) using a co-precipitation technique subsequently characterized X-ray diffraction (XRD), scanning electron microscopy (SEM) energy-dispersive spectroscopy (EDS) methods. Results: Experimental parameters including pH, sweep rate concentration studies investigated determination of uric acid. Poly (Congo red) Cerium (PCRCeO2MCPE) was employed simultaneous analysis UA SFZ. showed excellent sensitivity selectivity towards electrochemical examination exhibits enhanced detection Uric acid (UA) even in existence sulfadiazine (SFZ) cyclic voltammetry (CV). Conclusion: established limits found be 0.478 1.595 LOD LOQ respectively. Hence, it is recommended use PCRCeO2MCPE bio-probe further investigation compounds electroanalytical applications.

Язык: Английский

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Nitrogen and sulfur co-doped porous carbon with metal–organic framework derived Co3O4@NiCo2O4 core–shell nanocomposites for simultaneous detection of mesalazine and acetaminophen

Microchemical Journal, Год журнала: 2024, Номер unknown, С. 112633 - 112633

Опубликована: Дек. 1, 2024

Язык: Английский

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