Assessing the Food Quality Using Carbon Nanomaterial Based Electrodes by Voltammetric Techniques

Biosensors, Journal Year: 2022, Volume and Issue: 12(12), P. 1173 - 1173

Published: Dec. 15, 2022

The world is facing a global financial loss and health effects due to food quality adulteration contamination, which are seriously affecting human health. Synthetic colors, flavors, preservatives added make more attractive consumers. Therefore, safety has become one of the fundamental needs mankind. Due importance safety, in great need developing desirable accurate methods for determining food. In recent years, electrochemical have popular, their simplicity, ease handling, economics, specificity safety. Common contaminants, such as pesticides, additives, animal drug residues, cause foods that most vulnerable contamination undergo evaluation frequently. present review article discusses detection above contaminants using different carbon nanomaterials, nanotubes (CNTs), graphene, ordered mesoporous (OMC), dots, boron doped diamond (BDD), fullerenes. voltammetric methods, cyclic voltammetry (CV) differential pulse (DPV), been proven be potential contaminants. use carbon-based electrodes advantage electrochemically sensing excellent sensitivity, specificity, large surface area, high porosity, antifouling, biocompatibility.

Language: Английский

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Electrochemical oxidation of methylene blue dye in wastewater using mechanically alloyed high entropy alloy modified carbon paste electrode using cyclic voltammetry

Materials Research Express, Journal Year: 2023, Volume and Issue: 10(5), P. 054003 - 054003

Published: May 1, 2023

Abstract Mechanical alloying is one of the popular, simple, and easy powder metallurgy methods to prepare nanostructured high entropy alloys (HEA). HEAs are modern-day that exhibit significantly improved properties used in many unique applications. One such application using HEA powders for determining methylene blue dye wastewater cyclic voltammetry. We have successfully synthesized composition 25Fe-19Cr-19Ni-18Ti-19Mn by planetary ball mill studied their phases, surface morphology, particle sizes x-ray diffraction (XRD), scanning electron microscope (SEM) transmission (TEM) respectively. fabricated HEA-modified carbon paste electrode (HEA-MCPE) study electrochemical oxidation (MB) present wastewater. MB a cationic toxic, carcinogenic doses; generally textile, paper, leather industries coloring purposes discharged into water sources thus creating threat aquatic animals humans. Therefore, we must determine waste regularly. Our can detect over pH range 6 7.6 with significant current response. found that, 4 mg HEA-MCPE optimal experimental conditions achieving higher rate electro-oxidation dye. The calculated active area bare be 0.180 0.918 cm 2 out increase concentration from 1 mM 5 increases anodic peak linearly due increased molecular interaction mobility electrons between analyte surface.

Language: Английский

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Chitosan-Based Electrochemical Sensors for Pharmaceuticals and Clinical Applications

Polymers, Journal Year: 2023, Volume and Issue: 15(17), P. 3539 - 3539

Published: Aug. 25, 2023

Chitosan (CTS), a biocompatible and multifunctional material derived from chitin, has caught researchers’ attention in electrochemical detection due to its unique properties. This review paper provides comprehensive overview of the recent progress applications CTS-based sensors analysis pharmaceutical products other types samples, with particular focus on medicinal substances. The covers studies developments 2003 2023, highlighting remarkable properties CTS, such as biocompatibility, chemical versatility, large surface area, that make it an excellent candidate for sensor modification. Combining CTS various nanomaterials significantly enhances capabilities sensors. Various are analyzed, including those utilizing carbon nanomaterials, metallic nanoparticles, conducting polymers, molecularly imprinted CTS. These exhibit sensitivity, selectivity, stability, enabling precise reliable medications. manufacturing strategies used preparation described, underlying mechanisms elucidated, integration transducer systems is highlighted. prospects promising, opportunities miniaturization, simultaneous detection, real-time monitoring applications.

Language: Английский

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A molecularly imprinted electrochemical microneedle sensor for multiplexed metabolites detection in human sweat

Talanta, Journal Year: 2023, Volume and Issue: 259, P. 124531 - 124531

Published: April 12, 2023

Language: Английский

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A novel dopamine electrochemical sensor based on 3D flake nickel oxide/ cobalt oxide @ porous carbon nanosheets/carbon nanotubes/electrochemical reduced of graphene oxide composites modified glassy carbon electrode

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2023, Volume and Issue: 666, P. 131284 - 131284

Published: March 21, 2023

Language: Английский

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Novel nitrogen‐rich anchored nickel (II) phthalocyanine with composite of multiwalled carbon nanotubes on modified glassy carbon electrode: Sensitive and selective electrocatalytic activity of nitrite

Applied Organometallic Chemistry, Journal Year: 2023, Volume and Issue: 38(1)

Published: Nov. 20, 2023

This work describes the synthesis of novel nickel tetra substituted 6‐bromobenzothiazole carboxamide (II) phthalocyanine (NiTBBTCAPc) and confirmed by spectroscopic‐microscopic methods as well electrochemical analysis. The oxidation nitrite was studied on NiTBBTCAPc‐multiwalled carbon nanotube (MWCNTs)/glassy electrode (GCE) due to its better electron transferring ability than bare GCE NiTBBTCAPc/GCE. As there is acceleration in surface area multiwalled nanotubes, a cyclic voltammetry (CV), differential pulse (DPV), amperometric techniques utilized for sensor were developed. exhibited fast response towards with detection limit 3.012 nM linear concentration range 50–900 CV method. fabricated shows excellent electrocatalytic activity compared modified Pc composite MWCNTs nitrite. NiTBBTCAPc‐MWCNTs/GCE good repeatability, stability, high selectivity even presence excess ascorbic acid (AA), dopamine (DA), uric (UA), paracetamol (PA), glucose, Pb (II), Cd Ca Mg (II). Finally, usage practical applications, employed achieve quantitative drinking water cabbage vegetable samples, respectively.

Language: Английский

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Electrochemical Sensing of Uric Acid with Zinc Oxide Nanorods Decorated with Copper Oxide Nanoseeds

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(18), P. 16615 - 16624

Published: Aug. 29, 2023

The use of hybrid nanostructured nanomaterials in sensor development has the potential to overcome sensitivity issue due combination different nanoscale features desired that are accumulated together and offer entirely characteristics. sensitive quantification biomolecules is required for early disease diagnosis. Herein, a (zinc oxide nanorods modified with copper nanoseeds (ZnO NRs-CuO NSs)) nanomaterial-integrated detects uric acid (UA) reported. A low-temperature solution-based method was described ZnO NR NR-CuO NS nanomaterial syntheses. resulted ultra-high (1477.88 μA/mM cm2) toward UA detection using differential pulse voltammetry (DPV) technique. DPV ∼7.7 times better compared cyclic (CV)-measured (187.32 cm2). surface modification NRs CuO "hybrid nanostructures" showed significant impact synergistic effect enhanced sensing performance. Furthermore, selectivity, stability, fabrication reproducibility, applicability real sample other crucial factors this nanomaterial-based sensor.

Language: Английский

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Highly Sensitive Electrochemical Non-Enzymatic Uric Acid Sensor Based on Cobalt Oxide Puffy Balls-like Nanostructure

Biosensors, Journal Year: 2023, Volume and Issue: 13(3), P. 375 - 375

Published: March 12, 2023

Early-stage uric acid (UA) abnormality detection is crucial for a healthy human. With the evolution of nanoscience, metal oxide nanostructure-based sensors have become potential candidate health monitoring due to their low-cost, easy-to-handle, and portability. Herein, we demonstrate synthesis puffy balls-like cobalt nanostructure using hydrothermal method utilize them modify working electrode non-enzymatic electrochemical sensor fabrication. The was utilized UA determination cyclic voltammetry (CV) differential pulse (DPV). balls-shaped nanostructure-modified glassy carbon (GC) exhibited excellent electro-catalytic activity during detection. Interestingly, when compared sensitivity sensors, DPV technique resulted in high (2158 µA/mM.cm2) CV (sensitivity = 307 µA/mM.cm2). developed showed good selectivity, stability, reproducibility, applicability human serum. Moreover, this study indicates that can be as material designing (bio)sensors detect specific analyte.

Language: Английский

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Electrochemical Nanosensor for the Simultaneous Determination of Anticancer Drugs Epirubicin and Topotecan Using UiO-66-NH2/GO Nanocomposite Modified Electrode

Biosensors, Journal Year: 2024, Volume and Issue: 14(5), P. 229 - 229

Published: May 4, 2024

In this work, UiO-66-NH2/GO nanocomposite was prepared using a simple solvothermal technique, and its structure morphology were characterized field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), diffraction (XRD). An enhanced electrochemical sensor for the detection of epirubicin (EP) proposed, which utilized nanocomposite-modified screen-printed graphite electrode (UiO-66-NH2/GO/SPGE). The improved performance SPGE towards redox reaction EP. Under optimized experimental conditions, demonstrates remarkable limit (LOD) 0.003 µM linear dynamic range from 0.008 to 200.0 µM, providing highly capable platform sensing Furthermore, simultaneous electro-catalytic oxidation EP topotecan (TP) investigated at UiO-66-NH2/GO/SPGE surface utilizing differential pulse voltammetry (DPV). DPV measurements revealed presence two distinct peaks TP, with peak potential separation 200 mV. Finally, successfully quantitative analysis TP in pharmaceutical injection, yielding satisfactory results.

Language: Английский

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Bimetallic UiO-66(Zr/Ce) MOF encapsulated reduced graphene oxide nanocomposite for voltametric detection of trace Lomefloxacin residues in milk

Journal of Food Composition and Analysis, Journal Year: 2024, Volume and Issue: 139, P. 107086 - 107086

Published: Dec. 9, 2024

Language: Английский

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