Electrochemical Sensors based on Gold–Silver Core–Shell Nanoparticles Combined with a Graphene/PEDOT:PSS Composite Modified Glassy Carbon Electrode for Paraoxon-ethyl Detection

ACS Omega, Год журнала: 2024, Номер 9(2), С. 2896 - 2910

Опубликована: Янв. 2, 2024

Herein, a nonenzymatic detection of paraoxon-ethyl was developed by modifying glassy carbon electrode (GCE) with gold–silver core–shell (Au–Ag) nanoparticles combined the composite graphene poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS). These were synthesized using seed-growth method and characterized UV–vis spectroscopy high-resolution transmission electron microscopy (HR-TEM) techniques. Meanwhile, structural properties, surface morphology topography, electrochemical characterization Au–Ag core–shell/graphene/PEDOT:PSS analyzed infrared spectroscopy, field emission scanning (FE-SEM), atomic force (AFM), impedance (EIS) Moreover, proposed sensor for based on modified GCE demonstrates good electroanalytical performance when investigated cyclic voltammetry (CV), differential pulse (DPV), chronoamperometry It found that synergistic effect between graphene/PEDOT:PSS provides higher conductivity enhanced electrocatalytic activity at an optimum pH 7. At 7, shows linear range concentrations from 0.2 to 100 μM limit 10 nM high sensitivity 3.24 μA μM–1 cm–2. In addition, confirmed reproducibility, possibility being further as disposable electrode. This also displayed selectivity in presence several interfering species such diazinon, carbaryl, ascorbic acid, glucose, nitrite, sodium bicarbonate, magnesium sulfate. For practical applications, this employed determination real samples (fruits vegetables) showed no significant difference standard spectrophotometric technique. conclusion, might have potential be platform sensors pesticide detection.

Язык: Английский

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Internet-of-things-integrated molecularly imprinted polymer-based electrochemical nano-sensors for pesticide detection in the environment and food products

Environmental Pollution, Год журнала: 2024, Номер 351, С. 124029 - 124029

Опубликована: Апрель 23, 2024

Язык: Английский

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A comprehensive review on the treatment of pesticide-contaminated wastewater with special emphasis on organophosphate pesticides using constructed wetlands

Journal of Environmental Management, Год журнала: 2024, Номер 368, С. 122163 - 122163

Опубликована: Авг. 24, 2024

Язык: Английский

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Recent progress of crystalline porous organic frameworks as ratiometric fluorescence biosensing platforms

TrAC Trends in Analytical Chemistry, Год журнала: 2023, Номер 171, С. 117500 - 117500

Опубликована: Дек. 22, 2023

Язык: Английский

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Progress and prospects in the green synthesis of molecularly imprinted polymers for sorptive extraction and sensing applications toward emerging contaminants in various sample matrices

TrAC Trends in Analytical Chemistry, Год журнала: 2023, Номер 170, С. 117466 - 117466

Опубликована: Ноя. 30, 2023

Язык: Английский

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Extremozyme-Based Biosensors for Environmental Pollution Monitoring: Recent Developments

Biosensors, Год журнала: 2024, Номер 14(3), С. 143 - 143

Опубликована: Март 14, 2024

Extremozymes combine high specificity and sensitivity with the ability to withstand extreme operational conditions. This work presents an overview of extremozymes that show potential for environmental monitoring devices outlines latest advances in biosensors utilizing these unique molecules. The characteristics various described so far are presented, underlining their stability conditions make them attractive biosensing. biosensor design is discussed based on detection photosynthesis-inhibiting herbicides as a case study. Several pesticides, heavy metals, phenols presented more detail highlight interesting substrate specificity, applications or immobilization methods. Compared mesophilic enzymes, integration faces additional challenges related lower availability production costs. use biosensing does not parallel success industrial applications. In recent years, “collection” recognition elements was enriched by selectivity thermostable chimeras. perspectives development exciting, considering also progress genetic editing oriented efficient folding, better electron transport. Stability, costs at sensing interfaces must be improved encourage wider biosensors.

Язык: Английский

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Preparation of surface molecularly imprinted polymers with Fe3O4/ZIF-8 as carrier for detection of Dimethoate in cabbage

Journal of Chromatography A, Год журнала: 2024, Номер 1722, С. 464859 - 464859

Опубликована: Апрель 4, 2024

Язык: Английский

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A colorimetric/electrochemical microfluidic biosensor using target-triggered DNA hydrogels for organophosphorus detection

Biosensors and Bioelectronics, Год журнала: 2024, Номер 263, С. 116558 - 116558

Опубликована: Июль 8, 2024

Язык: Английский

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Enhancing Sensitivity and Selectivity: Current Trends in Electrochemical Immunosensors for Organophosphate Analysis

Biosensors, Год журнала: 2024, Номер 14(10), С. 496 - 496

Опубликована: Окт. 12, 2024

This review examines recent advancements in electrochemical immunosensors for the detection of organophosphate pesticides, focusing on strategies to enhance sensitivity and selectivity. The widespread use these pesticides has necessitated development rapid, accurate, field-deployable methods. We discuss fundamental principles explore innovative approaches improve their performance. These include utilization nanomaterials such as metal nanoparticles, carbon nanotubes, graphene signal amplification; enzyme-based amplification strategies; design three-dimensional electrode architectures. integration sensors into microfluidic lab-on-a-chip devices enabled miniaturization automation, while screen-printed disposable electrodes have facilitated on-site testing. analyze challenges faced real sample analysis, including matrix effects stability biological recognition elements. Emerging trends application artificial intelligence data interpretation aptamer-based are highlighted. also considers potential commercialization hurdles that must be overcome adoption. Future research directions identified, multi-analyte platforms with emerging technologies like Internet Things. comprehensive overview provides insights current state field outlines promising avenues future pesticide detection.

Язык: Английский

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The state-of-the-art of molecularly imprinted polymers based electrochemical sensors and their applications in drug assay

Coordination Chemistry Reviews, Год журнала: 2024, Номер 526, С. 216384 - 216384

Опубликована: Дек. 4, 2024

Язык: Английский

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