Wide-range and selective detection of SARS-CoV-2 DNA via surface modification of electrolyte-gated IGZO thin-film transistors

iScience, Journal Year: 2024, Volume and Issue: 27(3), P. 109061 - 109061

Published: Feb. 1, 2024

The 2019 coronavirus pandemic resulted in a massive global healthcare crisis, highlighting the necessity to develop effective and reproducible platforms capable of rapidly accurately detecting SARS-CoV-2. In this study, we developed an electrolyte-gated indium-gallium-zinc-oxide (IGZO) thin-film transistor with sequential surface modification realize low limit detection (LoD <50 fM) wide range from 50 fM 5 μM good linearity (R

Language: Английский

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A Comprehensive Review of Self-Assembly Techniques Used to Fabricate as DNA Origami, Block Copolymers, and Colloidal Nanostructures

Current Nanoscience, Journal Year: 2024, Volume and Issue: 21(3), P. 385 - 403

Published: Feb. 14, 2024

Self-assembly techniques play a pivotal role in the field of nanotechnology, enabling spontaneous organization individual building blocks into ordered nanostructures without external intervention. In DNA origami, design and synthesis strands allow for precise folding complex nanoarchitectures. This technique holds immense promise nanoelectronics, nanomedicine, nanophotonics, offering nanoscale precision versatility structural design. Block copolymers represent another fascinating self-assembly system, driven by phase separation microdomain formation. Understanding controlling behavior block enable applications nanolithography, nanopatterning, nanofabrication, owing to their ability generate well-defined nanostructures. Colloidal assembly is versatile powerful fabricating materials with control over properties. The process involves arrangement colloidal particles structures at microscale or larger, interparticle interactions, Brownian motion, entropic effects. As research technology continue progress, promising opportunities creating novel diverse fields, contributing advancements optics, electronics, biomedicine. continuous exploration development will undoubtedly open new avenues innovation impact various areas science future. review article provides comprehensive overview used fabricate nanostructures, focusing on copolymers, assembly. With focus origami particular, its uses drug administration, biosensing, computational storage are introduced. There also discussion potential difficulties involved assembling using origami.

Language: Английский

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A low-fouling electrochemical immunosensor based on reduced graphene oxide and terbium@amine-functionalized fibrous silica-modified screen-printed carbon electrodes for ratiometric detection of carcinoembryonic antigen (CEA) in serum samples

Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 112928 - 112928

Published: Jan. 1, 2025

Language: Английский

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An intertwined network of Ni-based metal-organic framework nanowires and multiwalled carbon nanotubes as a potent electrocatalyst for real-time detection of environmental toxic heavy metal ions in local tap water

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Globally, in the existing situation, providing quality water without contamination to humans is one of most challenging goals. In this perspective, present report focuses on fabrication and real-world application implementation a flexible, simple cost-effective electrochemically viable sensor based GCE (glassy carbon electrode) fine-tuned with an intertwined network Ni-based metal-organic framework nanowires (Ni-MOF NWs) multiwalled nanotubes (MWCNTs) for real-time detection environmental toxic heavy metal ions (Cd (II) Pb (II)) local tap water. At outset, first time, Ni-MOF NWs were synthesized by traditional hydrothermal method their electrocatalytic activity was drastically improved successfully intertwining MWCNTs NWs/MWCNTs) via ultrasonication process. The structural morphological characterizations NWs/MWCNTs analyzed XRD, XPS, TEM EDS elemental color mapping. electrochemical developed sensors, like sensing charge transfer capacity, explored CV (cyclic voltammetry) EIS (electrochemical impedance spectroscopy) techniques. DPV (differential pulse technique used investigate proposed electrode limit detections (LODs), selectivity applicability towards Cd detection. simultaneous measurements performed LODs found be as 0.017 0.011 µM, respectively, which well below drinking guidelines WHO (World Health Organization), Indian government U.S. EPA (United States Environmental Protection Agency). Moreover, exhibited remarkable repeatability, reproducibility stability results. Our group further tried apply NWs/MWCNTs/GCE practical determination acquired agreeable recovery rates between 98.1 101.7%. Based adequate results, can become competent electrocatalyst near future recognize levels at reliable cost samples order elude health issues.

Language: Английский

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Surface engineering of chak’o nano-clay with iron oxide and APTES for enhanced heavy metal adsorption in water treatment

F1000Research, Journal Year: 2025, Volume and Issue: 14, P. 334 - 334

Published: March 27, 2025

Background The heavy metal contamination of water leads to major environmental and health problems throughout the Mantaro River basin area. study assesses adsorption capacity surface-modified chak’o nano-clay for extracting lead (Pb2+) arsenic (As5+). Methods Surface modifications unmodified were achieved using through Aminopropyltriethoxysilane (APTES), iron oxide (Fe3O4), combined APTES + Fe3O4 particles. Adsorption performance was assessed batch experiments over 8 hours. BET XPS analyses conducted determine surface area, pore volume, functional group availability. kinetics modeled a pseudo-second-order model, equilibrium data analyzed Langmuir isotherm. Results dual modification produced maximum removal capacities which led 95–100% Pb2+ As5+ analysis demonstrated that area (300 m2/g 375 m2/g) volume (0.420 cm3/g 0.600 cm3/g) as well availability increased substantially thus resulting in improved adsorption. model fit kinetic while isotherm behavior describe monolayer treatment combination with generated an adsorbent better magnetic properties electrical conductivity improving its recovery potential structural stability. dual-modified showed high stability during three cycles desorption tests because it maintained more than 90% original process. Conclusion research shows specialized treatments deliver advanced absorption abilities positions leading choice sustainable system remediation.

Language: Английский

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Morphology and atomic configuration control of heavy metal attraction modified layer on screen-printed electrode to enhance electrochemical sensing performance

Journal of Electroanalytical Chemistry, Journal Year: 2023, Volume and Issue: 939, P. 117477 - 117477

Published: April 19, 2023

Language: Английский

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Simultaneous Sensing of Cd(II), Pb(II), and Cu(II) Using Gold Nanoparticle-Modified APTES-Functionalized Indium Tin Oxide Electrode: Effect of APTES Concentration

ACS Omega, Journal Year: 2023, Volume and Issue: 8(19), P. 16587 - 16599

Published: May 5, 2023

In this work, indium tin oxide (ITO) electrodes were functionalized with varying 3-aminopropyltriethoxysilane (APTES) concentration percentages (0.5, 0.75, 1.0, and 2.0 wt %) to obtain the optimum conditions for assembly of as-synthesized gold nanoparticles (AuNPs). The AuNP coverage, wettability, electrochemical performance modified evaluated. AuNP/0.75% APTES-ITO-modified electrode exhibited uniform coverage AuNPs high simultaneous detection Cd(II), Pb(II), Cu(II) ions. Under conditions, showed a linear range 5-120 ppb limit 0.73, 0.90, 0.49 ions, respectively, via square wave anodic stripping voltammetry. demonstrated good anti-interference toward other heavy metal reproducibility, suitability application in environmental sample analysis.

Language: Английский

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A novel three-dimensional electrochemical Cd(II) biosensor based on l-glutathione capped poly(3,4-ethylenedioxythiophene):polystyrene sulfonate/carboxylated multiwall CNT network

Journal of Science Advanced Materials and Devices, Journal Year: 2022, Volume and Issue: 7(4), P. 100504 - 100504

Published: Sept. 1, 2022

The increased water contamination caused by heavy metal ions has negative consequences for human beings. majority of these are incredibly poisonous, nonbiodegradable, and bioaccumulative. Therefore, the detection hazardous is crucial in current situation. sensing mechanism electrochemical biosensors must be understood to increase performance, such as selectivity, sensitivity, limit, repeatability, reproducibility application scenarios. present investigation demonstrates preparation l-Glutathione modified Poly (3,4-ethylenedioxythiophene): polystyrene sulfonate/carboxylated multiwall carbon nanotubes ([email protected]:PSS/MWCNTs-COOH) network solution processing method. efficacy [email protected]: PSS/MWCNTs-COOH been investigated using GIXRD, Raman, UV-Vis, FT-IR, AFM, CV, EIS. capability a biosensor utilizing DPASV technique. presented Cd(II) exhibited sensitivity 10.69 μA/ppm limit 1 ppb. Moreover, developed good repeatability (RSD = 1.83%), 4.73%). These favorable results make electrode an excellent probe next generation detect lungs, kidney, breast cancers.

Language: Английский

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Electrochemical Estimation of Cd and Cu Ions Simultaneously Using a Modified MgO/Fe2O3 Nanocomposite/Carbon Paste Electrode

Electrocatalysis, Journal Year: 2023, Volume and Issue: 14(6), P. 875 - 890

Published: Oct. 9, 2023

Abstract Heavy metals are serious inorganic pollutants that need to be monitored in the hydrosphere with simple and cheap methods. Herein, a new sensor was fabricated by modifying carbon paste electrode MgO/Fe 2 O 3 nanocomposite for simple, rapid, accurate, highly sensitive simultaneous determination of Cd (II) Cu using differential pulse anodic stripping voltammetry. The electrochemical behavior constructed examined, all parameters were optimized including deposition potential, time, pH, scan rate. For (II), respective detection limits determined 3.3 × 10 −11 M 3.6 M, quantification 1.1 −10 1.2 M. estimated Nile river, tap, bottled real water samples high recoveries ranging from 99 117%. Graphical

Language: Английский

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Enhanced adsorptive removal of As(V) ions in aqueous solution using polyethersulfone ultrafiltration mixed matrix membranes impregnated with 3‐aminopropyltriethoxysilane modified magnetite Fe₃O₄ nanoparticles

Journal of Applied Polymer Science, Journal Year: 2023, Volume and Issue: 140(24)

Published: April 19, 2023

Abstract This study involves the fabrication of mixed matrix membranes (MMMs) for ultrafiltration, which contained 3‐aminopropyltriethoxysilane modified magnetite iron oxide nanoparticles (A‐Fe 3 O 4 NPs), through a phase inversion technique. The physiochemical properties and surface morphologies both as‐synthesized A‐Fe NPs fabricated MMMs were examined using advanced characterization techniques. quasi‐spherical had an average particle size 12 nm Brunauer–Emmett–Teller area 131.38 m 2 /g. Analysis by Fourier transform infrared Raman spectroscopy confirmed presence NH OH functional groups grafted onto Fe NPs. incorporation higher loadings in membrane significantly improved adsorptive ability hydrophilicity adsorbent, leading to water permeance, adsorption rate, adsorption‐filtration properties. contact angle decreased from 70.7° 63.2°, flux increased 239.9 443.8 L/m .h, while overall porosity 43.4% 51.9%.

Language: Английский

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