Electrocatalytic oxidation and amperometric determination of sulfasalazine using bimetal oxide nanoparticles–decorated graphene oxide composite modified glassy carbon electrode at neutral pH

Rajaji, Umamaheswari; M.S., Raghu; K., Yogesh Kumar; Al‐Kahtani, Abdullah A.; Chen, Chih‐Ping; Juang, Ruey-Shin; Liu, Tingyu

doi:10.1007/s00604-022-05498-w

Cited by 12 publications

(7 citation statements)

References 58 publications

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“…The circuit consist of different components labelled as Z w , C dl , R s and R ct which corresponds to the Warburg impedance, the double-layer capacitance, the solution resistance and the charge transfer resistance, respectively. 17,45,46 In general, the linear ratio and diameter of the semicircle represent the diffusion-control and electro transfer kinetics of the reaction. The R ct values were found to 92.5 Ω and 29.8 Ω for the bare SPCE and La-Fe-MOFs/SPCE, respectively.…”

Section: Tga Analysis Of La-fe Mof(a) and Xps Analysis Of La-fe Mofs ...mentioning

confidence: 99%

Heterogeneous Bimetallic (La–Fe) Metal-Organic-Frameworks as an Efficient Bifunctional Catalyst for High-Performance Supercapacitors and Electrochemical Sensors

Chinnapaiyan

Das

Govindasamy

et al. 2022

J. Electrochem. Soc.

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The thriving energy demand of the gradually increasing population and modernized life style requires development in energy storage devices for usage in commercial electronic devices. The synthesized La-Fe MOFs was found electrochemically active and its electrochemical performances as battery-type electrode. In this work, an enzyme-free electrochemical sensor based on La–Fe MOFs was developed for the detection of chlorambucil (CBL) and paracetamol (PCT). Further modification of La–Fe MOFs can improve the high surface area and catalytic capability of the composites. Under the optimal detection conditions, the prepared sensor has good linearity in the detection of CBL and PCT within range 0.05–265 μM. The limit of detection (LOD) of CBL and PCT is 18.4 nM and 15.6 nM, respectively. The real sample analysis, stability and selectivity of the sensors were analyzed. The electrochemically active La–Fe MOFs exhibited with higher charge storage capacity. The La–Fe MOFs exhibited specific capacity as high as 171 C g−1 at a constant applied current density of 1.5 A g−1 in 1 M KOH. The addition of Fe to the La-MOFs has helped to overcome the issues and achieve a better electrochemical performance. It can be a promising candidate for electrochemical energy storage device to meet the global energy demand.

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Section: Tga Analysis Of La-fe Mof(a) and Xps Analysis Of La-fe Mofs ...mentioning

confidence: 99%

Heterogeneous Bimetallic (La–Fe) Metal-Organic-Frameworks as an Efficient Bifunctional Catalyst for High-Performance Supercapacitors and Electrochemical Sensors

Chinnapaiyan

Das

Govindasamy

et al. 2022

J. Electrochem. Soc.

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“…During the past few years, the presence of organic and inorganic pollutants in wastewater effluents has appeared to be one of the most severe environmental threats. − These pollutants reach the ecosystem through natural and anthropogenic activities, including industrial or agricultural activities. − The low concentration of organic pollutants in the aqueous system has several potentially hazardous effects on human health as well as on aquatic life. − Along with organic pollutants, heavy metals also seriously threaten the environment and human health. − …”

Section: Introductionmentioning

confidence: 99%

Synthesis of NiO-Doped ZnO Nanoparticle-Decorated Reduced Graphene Oxide Nanohybrid for Highly Sensitive and Selective Electrochemical Sensing of Bisphenol A in Aqueous Samples

Buledi

Shaikh

Solangi

et al. 2023

Ind. Eng. Chem. Res.

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Bisphenol A (BPA) is broadly used in the plastic industry and has several health effects, especially on the brain and prostate gland of fetuses. BPA is a major environmental pollutant that drains into bodies of water and leaches from food packaging. Since it is a known endocrine disruptor, its extensive release into the environment is a serious concern. Thus, regular monitoring of BPA through a reliable and sensitive method is a strategy that can help alleviate its impact. To tackle this issue, an excellent conductive material based on a NiO/ZnO/rGO nanohybrid was used as an electrocatalyst to determine BPA in drinking water samples. The engineered material was characterized through XRD, EDX, and SEM. The EDX mapping was also used to examine the purity, surface texture, and focused elemental composition of the NiO/ZnO/rGO nanohybrid. The average size of the prepared material was calculated as 43.7 nm, which confirmed the nanometric size of the engineered nanohybrid material. The conductive behavior of the fabricated sensor NiO/ZnO/rGO/PtE was examined through electrochemical impedance spectroscopy (EIS) and cyclic voltammetry. The modified sensor revealed an excellent conductive nature with ohmic resistance calculated to be 412 Ω, which is lower than that of the bare electrode and GO/PtE (3628 and 2239 Ω, respectively). Under optimal parameters, the fabricated sensor showed excellent response for BPA. With a linear dynamic range of 0.07−30 μM, NiO/ZnO/rGO/PtE manifested the lowest possible detection limit found (4.0 nM). The analytical applicability of the proposed sensor was investigated in bottled and tap water. Furthermore, both the acceptable recovery values and anti-interference ability indicated the effectiveness and potential commercial utilization of NiO/ZnO/rGO/PtE. The recovery values for mineral and tap water were 97.0%, 99.0%, and 97.3% and 101%, 99.6%, and 98.7%, respectively.

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“…Materials used for the surface modification of glassy carbon electrodes (GCEs) for electrochemical sensors mainly include carbon-based nanomaterials (such as carbon nanotubes and graphene), metal nanoparticles, metal oxide nanoparticles, and polymer materials. The materials used for electrochemical sensors should have good conductivity and selectivity to given drug molecules [ 31 ]. Therefore, it is necessary to choose suitable electrode materials to design a sensitive, cheap and effective electrochemical method, to determine TDF.…”

Section: Introductionmentioning

confidence: 99%

Fast and Ultrasensitive Electrochemical Detection for Antiviral Drug Tenofovir Disoproxil Fumarate in Biological Matrices

et al. 2022

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Tenofovir disoproxil fumarate (TDF) is an antiretroviral medication with significant curative effects, so its quantitative detection is important for human health. At present, there are few studies on the detection of TDF by electrochemical sensors. This work can be a supplement to the electrochemical detection of TDF. Moreover, bare electrodes are susceptible to pollution, and have high overvoltage and low sensitivity, so it is crucial to find a suitable electrode material. In this work, zirconium oxide (ZrO2) that has a certain selectivity to phosphoric acid groups was synthesized by a hydrothermal method with zirconyl chloride octahydrate as the precursor. A composite modified glassy carbon electrode for zirconium oxide-chitosan-multiwalled carbon nanotubes (ZrO2-CS-MWCNTs/GCE) was used for the first time to detect the TDF, and achieved rapid, sensitive detection of TDF with a detection limit of sub-micron content. The ZrO2-CS-MWCNTs composite was created using sonication of a mixture of ZrO2 and CS-MWCNTs solution. The composite was characterized using scanning electron microscopy (SEM) and cyclic voltammetry (CV). Electrochemical analysis was performed using differential pulse voltammetry (DPV). Compared with single-material electrodes, the ZrO2-CS-MWCNTs/GCE significantly improves the electrochemical sensing of TDF due to the synergistic effect of the composite. Under optimal conditions, the proposed method has achieved good results in linear range (0.3~30 μM; 30~100 μM) and detection limit (0.0625 μM). Moreover, the sensor has the merits of simple preparation, good reproducibility and good repeatability. The ZrO2-CS-MWCNTs/GCE has been applied to the determination of TDF in serum and urine, and it may be helpful for potential applications of other substances with similar structures.

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Electrocatalytic oxidation and amperometric determination of sulfasalazine using bimetal oxide nanoparticles–decorated graphene oxide composite modified glassy carbon electrode at neutral pH

Cited by 12 publications

References 58 publications

Heterogeneous Bimetallic (La–Fe) Metal-Organic-Frameworks as an Efficient Bifunctional Catalyst for High-Performance Supercapacitors and Electrochemical Sensors

Heterogeneous Bimetallic (La–Fe) Metal-Organic-Frameworks as an Efficient Bifunctional Catalyst for High-Performance Supercapacitors and Electrochemical Sensors

Synthesis of NiO-Doped ZnO Nanoparticle-Decorated Reduced Graphene Oxide Nanohybrid for Highly Sensitive and Selective Electrochemical Sensing of Bisphenol A in Aqueous Samples

Fast and Ultrasensitive Electrochemical Detection for Antiviral Drug Tenofovir Disoproxil Fumarate in Biological Matrices

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