Zinc phthalocyanine anchored magnetite particles: Efficient platform for sensing of thiocyanate

Nemakal, Manjunatha; Shantharaja,; Kuntoji, Giddaerappa; Palanna, Manjunatha; Sannegowda, Lokesh Koodlur; Kumar, P. S.

doi:10.1016/j.jelechem.2021.115385

Cited by 13 publications

(9 citation statements)

References 39 publications

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“…Fortification of the working electrode matrix with different metal oxide nanostructures is characterized by the strong adhesion of the metallic nanostructure to the graphite substrate, offering a stable electrocatalytic effect of the metallic centers. Iron oxide nanoparticles (FeONPs) represent one of the most popular electrode modifiers with a high electrocatalytic effect based on their band gaps and overall redox potentials. − …”

Section: Introductionmentioning

confidence: 99%

Superficial and Inkjet Scalable Printed Sensors Integrated with Iron Oxide and Reduced Graphene Oxide for Sensitive Voltammetric Determination of Lurasidone

et al. 2023

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The present work demonstrated the fabrication and the electrochemical characterization of novel printed electrochemical sensors integrated with an innovative nanosensing platform based on the synergic electrocatalytic effect of iron oxide nanoparticles (FeONPs) and reduced graphene oxide (rGO) for precise voltammetric determination of the antipsychotic drug lurasidone hydrochloride (LUH). The features of the electrode surface fabricated using the ordinary inkjet printer were characterized by scanning electron microscopy and electrochemical impedance spectroscopy. Among different ink formulations, integration of the printing ink with the ratio 15 mg FeONPs and 20 mg rGO was found to be the most appropriate for sensitive quantification of LUH in biological fluids and pharmaceutical formulations in the presence of LUH degradation products. Under the optimized experimental and electroanalytical parameters, the recorded square-wave voltammograms were correlated to LUH within the linear concentration ranging from 50 to 2150 ng mL −1 with detection limit and limit of quantification values of 15.64 and 47.39 ng mL −1 , respectively. Based on the cyclic voltammograms recorded for LUH at different scan rates, the electrode reaction was assumed to be a diffusion reaction mechanism accompanied by the transfer of two electrons/protons through the oxidation of the five-membered ring nitrogen atom as assumed by the molecular orbital calculations carried out on the LUH molecule. The C max of LUH and the efficiency of the fabricated sensors enabled their clinical application for monitoring LUH in human biological fluids and pharmaceutical formulations in the presence of degradants for diverse quality control applications and green chemistry analysis.

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Section: Introductionmentioning

confidence: 99%

Superficial and Inkjet Scalable Printed Sensors Integrated with Iron Oxide and Reduced Graphene Oxide for Sensitive Voltammetric Determination of Lurasidone

et al. 2023

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“…Recent research has been devoted to integration of electrochemical sensors with various nanostructures to enhance the sensing performance such as their selectivity, sensitivity, and response time. Several trials were performed to incorporate different metallic oxide nanostructures within the electrochemical sensor matrix. − As a common metallic oxide nanostructure, copper oxide nanoparticles (CuONPs) were utilized as a proper electrode modifier for electrochemical sensing of many pharmaceutically active compounds. − Zeolitic nanostructures showed promising characteristics such as shape, pore size, and high cation exchange capacity; therefore, they were reported as a recommended modifier for various electrochemical sensors in determining many biologically and pharmaceutically active compounds. − …”

Section: Introductionmentioning

confidence: 99%

Novel Deliberately Sensitive and Selective Tetrahydrozoline Voltammetric Sensors Integrated with a Copper Oxide Nanoparticle/Zeolite Platform

Abumelha,

Sayqal,

Snari

et al. 2024

ACS Omega

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The present study introduced a novel disposable screen-printed carbon electrodes (SPCEs) modified with copper oxide/zeolite nanostructures for eco-friendly selective differential pulse voltammetric quantification of tetrahydrozoline (THZ) in eyedrop samples and biological fluids. Modification of the electrode matrix with copper oxide nanoparticles/zeolite nanostructures (CuONPs/ZY) with their effective and synergistic electrocatalytic activity enhanced the electrode performance against electrooxidation of THZ at 0.960 V in BR at pH 9.0 with a diffusion-controlled reaction mechanism. The tentative oxidation mechanism based on molecular orbital calculations postulates the oxidation of THZ molecules through oxidation of a nitrogen atom five-membered ring and the participation of two electrons/protons in the electrode reaction. Linear calibration curves were illustrated within a wide THZ concentration range from 0.24 to 57.2 μg mL–1 recording a limit of detection (LOD) value of 0.0799 μg mL–1. The CuONPs/ZY/SPEs exhibited improved performance compared with the sole reported THZ sensor-based gold film-plated carbon paste electrodes, in addition to their high reproducibility of fabrication and measurement and prolonged shelf lifetime. Tetrahydrozoline was successfully assayed in the presence of excipients, degradation products, and chloramphenicol. The presented voltammetric sensor can be considered as an eco-friendly and reliable analytical approach for monitoring THZ residues in eye drop samples and biological fluids with high recovery compared with the official pharmacopeial analytical protocol. The presented sensors were assessed according to an EcoScale tool and also compared with the reported THZ sensor.

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“…This aids in improving the sensor stability and sensitivity for the electrochemical determination of SMZ. 30,31 It should be noted that no literature has yet referenced the use of this modified electrode for the voltametric determination of SMZ. Thus, we prepared a magnetic 3-acetylindolechitosan Schiff base as a modifier for the CPE, creating a simple, rapid, sensitive, and cost-effective electrochemical sensor for SMZ detection.…”

Section: Introductionmentioning

confidence: 99%

Voltametric Sensor Based on Magnetic Chitosan Acetylindole-Based Nanocomposite for the Determination of Sulfamethazine

Abd-Elsabour,

Abou-Krisha,

Alhamzani

et al. 2024

ACS Omega

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Sulfamethazine (SMZ), a persistent antibiotic, is frequently detected in drinking water and milk. For this reason, our research aimed to develop a novel electrochemical sensor based on a magnetic nanocomposite supported on chitosan modified by 3acetylindole through the formation of chitosan acetylindole Schiff base (Chs-Aci). The objective was to detect extremely low concentrations of SMZ in milk. The synthesized nanocomposites were characterized by various techniques, including FT-IR, XRD, EDX, SEM, and TEM. To enhance the electrocatalytic efficiency for sensitive SMZ detection in food samples, a magnetic chitosan acetylindole nanocomposite (M-Chs-Aci) was employed as a modifier for a carbon paste electrode (CPE). The electrochemical measurements revealed that the M-Chs-Aci/CPE exhibits good electrocatalytic performance compared to a bare CPE. Moreover, low detection limit, repeatability, and stability were achieved at 0.021 μM, 3.83%, and 94.87%, respectively. Finally, the proposed M-Chs-Aci/CPE proved to be highly effective in detecting SMZ in milk samples. The obtained findings paved the way for the effective usability of M-Chs-Aci/CPE as a sensor for detecting SMZ in real samples, with acceptable recoveries of 95%−98.87%.

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Zinc phthalocyanine anchored magnetite particles: Efficient platform for sensing of thiocyanate

Cited by 13 publications

References 39 publications

Superficial and Inkjet Scalable Printed Sensors Integrated with Iron Oxide and Reduced Graphene Oxide for Sensitive Voltammetric Determination of Lurasidone

Superficial and Inkjet Scalable Printed Sensors Integrated with Iron Oxide and Reduced Graphene Oxide for Sensitive Voltammetric Determination of Lurasidone

Novel Deliberately Sensitive and Selective Tetrahydrozoline Voltammetric Sensors Integrated with a Copper Oxide Nanoparticle/Zeolite Platform

Voltametric Sensor Based on Magnetic Chitosan Acetylindole-Based Nanocomposite for the Determination of Sulfamethazine

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