Laser-scribing graphene-based electrochemical biosensing devices for simultaneous detection of multiple cancer biomarkers

Talanta, Journal Year: 2023, Volume and Issue: 266, P. 125096 - 125096

Published: Aug. 26, 2023

Language: Английский

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Electrochemical nonenzymatic glucose sensors catalyzed by Au nanoclusters on metallic nanotube arrays and polypyrrole nanowires

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 657, P. 567 - 579

Published: Dec. 1, 2023

Language: Английский

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A facile poly(allura red) film for signal-amplified electrochemical sensing of dopamine and uric acid in human plasma and urine

Microchemical Journal, Journal Year: 2023, Volume and Issue: 195, P. 109425 - 109425

Published: Sept. 23, 2023

Language: Английский

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Aptasensor Integrated with Two-Dimensional Nanomaterial for Selective and Sensitive Electrochemical Detection of Ketamine Drug

Micromachines, Journal Year: 2024, Volume and Issue: 15(3), P. 312 - 312

Published: Feb. 24, 2024

Ketamine is one of the most commonly abused drugs globally, posing a severe risk to social stability and human health, not only it being used for recreational purposes, but this tasteless, odourless, colourless drug also facilitates sexual assaults when mixed with drinks. abuse threat safety, misuse main uses drug. The crucial role ketamine detection evident in its contributions forensic investigations, law enforcement, control, workplace integrity, public health. Electrochemical sensors have gained considerable interest among researchers due their various advantages, such as low cost specificity, particularly screen-printed paper-based electrode (SPBE) biosensors attention. Here, we reported an ePAD (electrochemical analytical device) detecting ketamine. advantages using are that reduces electrode's production costs disposable environmentally friendly. At same time, nanographite sheets (NGSs) assisted amplifying signals generated cyclic voltammetry system was present. This developed by immobilizing aptamer on NGS electrodes. characterization proper synthesized NGSs performed Scanning Electron Microscopy (SEM), XRD (X-ray Diffraction), Fourier-transform infrared spectroscopy (FTIR), UV-Vis spectroscopy. techniques, including (CV) linear sweep (LSV), were employed validate results confirm each attachment. Furthermore, versatility proposed sensor explored both alcoholic non-alcoholic beverages. showed LOD about 0.01 μg/mL, range between 5 μg/mL. approach offers valid diagnostic technique onsite service minimal resources. effective portable platform desirable characteristics like sensitivity selectivity can be POC (point care) testing help quick identification suspicious samples at trafficking sites, amusement parks, side road.

Language: Английский

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Synthesis of cobalt phosphide hybrid for simultaneous electrochemical detection of ascorbic acid, dopamine, and uric acid

RSC Advances, Journal Year: 2024, Volume and Issue: 14(21), P. 14665 - 14671

Published: Jan. 1, 2024

A Co 2 P hybrid, containing nanoparticles anchored on a P, N-doped porous carbon matrix, was synthesized and modified screen-printed electrode (SPE) as hybrid-SPE for the simultaneous detection of ascorbic acid, dopamine uric acid.

Language: Английский

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Electrochemical Detection of 4-Nitrophenol Using a Novel SrTiO₃/Ag/rGO Composite

ACS Omega, Journal Year: 2023, Volume and Issue: 8(45), P. 42479 - 42491

Published: Nov. 3, 2023

In this study, an eco-friendly strategy was used to prepare a novel SrTiO3/Ag/rGO composite. A composite-modified screen-printed carbon electrode (SPCE) applied for the electrochemical detection of 4-nitrophenol. simple ultrasonic method with frequency 20 kHz synthesis composite material. The obtained characterized by X-ray diffraction, Fourier transform infrared, Raman spectroscopy, field emission electron microscopy, and UV-visible spectroscopy. Electrochemical impedance spectroscopy determine electrical conductivity properties modified were studied using cyclic voltammetry as well linear sweep techniques. comparison SrTiO3/SPCE, SrTiO3/Ag/SPCE, SrTiO3/rGO/SPCE electrodes, SrTiO3/Ag/rGO/SPCE demonstrates considerable increase in 4-nitrophenol redox peak current. At optimum conditions, large response range 0.1-1000 M, relatively low limit (0.03 M), outperforms previously published Moreover, electrode-based sensor is distinguished good selectivity, high stability, repeatability. Furthermore, contributed river water drinking recovery from 97.5 98.7%. experimental finding supported density functional theory calculation.

Language: Английский

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Boron Carbon Nitride-Assisted Electro-Functionalization of Screen-Printed Electrode for Tryptophan Sensing

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(16), P. 14849 - 14860

Published: Aug. 8, 2023

Screen-printed electrodes (SPEs) have emerged as reliable probes for portable, economical, and practical testing platforms in point-of-care (PoC) applications. Compared to the conventional three-electrode systems, SPEs require significantly less sample volume omit cleaning pre-treatment requirements. This work is focused on amplifying response signal of SPE using a facile protocol boron carbon nitride (BCN)-assisted surface functionalization cyclic voltammetry (CV). To validate success modification, subjected chemical electrochemical characterization X-ray photoelectron spectroscopy, CV, differential pulse voltammetry. Ascribed BCN's electrocatalytic ability, modified improves activity, with five-fold increase current an 18 mV potential shift. The fabricated sensing platform demonstrates high sensitivity selectivity toward quantitative analysis tryptophan detection limit 36.4 nM. Furthermore, developed sensor was tested monitoring TRP levels complex matrices like food human body fluids. proposed approach electrode modification holds promise providing swift, precise, cost-effective means improving trace level detections required PoC

Language: Английский

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Nanoengineered parallelogram-NiFe₂O₄/rGO nanocomposite-based biosensing interface for highly efficient electrochemical detection of neurodegenerative disorders via dopamine monitoring

RSC Applied Interfaces, Journal Year: 2023, Volume and Issue: 1(2), P. 252 - 267

Published: Nov. 8, 2023

A low-temperature hydrothermal method for synthesis of unique parallelogram morphology based NiFe 2 O 4 and /reduced graphene oxide nanocomposite fabricating biosensors dopamine monitoring.

Language: Английский

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Electrochemical Detection of Dopamine at a Novel Poly(2,4,6‐trihydroxybenzaldehyde) Film Modified Electrode

ChemElectroChem, Journal Year: 2024, Volume and Issue: 11(7)

Published: Feb. 21, 2024

Abstract In this study, a novel electrodeposition of poly(2,4,6‐trihydroxybenzaldehyde) on bare glassy carbon electrode for dopamine detection was reported. 2,4,6‐trihydroxybenzaldehyde and the electrodeposited were characterized using Fourier transform‐infrared spectroscopy, UV‐visible scanning electron microscopy. The modified with optimum amount (PTGCE) used electroanalysis. linear dynamic range limit DA at PTGCE 0.70‐19.48 μM 19.48–53.30 μM, 0.64 respectively. showed outstanding discriminatory in presence uric acid ascorbic due to dopamine‐uric dopamine‐ascorbic peak‐to‐peak separation 160 mV 200 mV, proposed sensor considerable reproducibility current response excellent % recovery 99.70 from real sample solution.

Language: Английский

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An Electrochemical Platform Constructed with Tantalum Nanoparticles and Graphene Nanoplatelets for the Voltammetric Sensing of Ritodrine

Electroanalysis, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

Tantalum (Ta) nanoparticles were synthesized by the reaction of lithium with pyridine solution TaCl 5 via ultrasonication. Then, Ta and graphene nanoplatelets (GNP) utilized to construct a novel sensing platform for voltammetric detection ritodrine. The electrochemically active surface area charge transfer resistance ( R ct ) proposed electrochemical (GCE/GNP@Ta) determined be 0.336 cm 2 86 Ω. This indicates that material can considered as promising in applications. performance GCE/GNP@Ta was examined ritodrine oxidation process compared other electrodes. improved behavior exhibited an peak potential E p 0.71 V, which is less than shift improvement indicated higher electrocatalytic activity electrode modified GNP@Ta. working range from 4.0 × 10 −8 1.5 −6 M limit 1.0 −9 (3 s b /m) measurements yielded excellent accuracy high precision biological samples.

Language: Английский

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