A5065706701- Electrochemical sensors and biosensors
- Advanced biosensing and bioanalysis techniques
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Analytical Chemistry and Sensors
- Advanced Nanomaterials in Catalysis
- Biosensors and Analytical Detection
- Metal-Organic Frameworks: Synthesis and Applications
- Adsorption and biosorption for pollutant removal
- Graphene and Nanomaterials Applications
- Catalytic Processes in Materials Science
- Nanomaterials for catalytic reactions
- Molecular Sensors and Ion Detection
- Pigment Synthesis and Properties
- Catalysis and Oxidation Reactions
- Meat and Animal Product Quality
- Catalysis and Hydrodesulfurization Studies
- Industrial Gas Emission Control
- Extraction and Separation Processes
- Morinda citrifolia extract uses
- Medical Research and Treatments
- Nanopore and Nanochannel Transport Studies
- Virology and Viral Diseases
- MicroRNA in disease regulation
- Advanced Biosensing Techniques and Applications
Hanoi University of Science and Technology
2014-2024
Nong Lam University Ho Chi Minh City
2021
A simple method has been developed for preparation of silver nanoparticles (AgNPs) based on the use graphene quantum dots (GQDs) as a reducing agent and stabilizer. The synthesized nanocomposites consisting (AgNPs/GQDs) characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Ultraviolet–visible spectroscopy (UV–Vis), Fourier-Transform Infrared (FT-IR), Energy Dispersive (EDX) Dynamic Light Scattering (DLS). Results indicate that monodisperse AgNPs obtained with...
We propose here an electrochemical platform for multi-heavy metal ion detection in water based on MIL-88B(Fe)-NH2, amine-functioned metal-organic framework (MOF) modifying the surface of a glassy carbon electrode (GCE). Herein, MIL-88B(Fe)-NH2 with abundant functionalized amine groups can play role capture sites enrichment ions before oxidation sensing. was synthesized under optimized conditions through solvothermal method and characterized by X-ray diffraction (XRD), scanning electron...
We report a simple and effective approach to develop an electrochemical biosensor based on molecular-imprinted polymer detect chloramphenicol (CAP). Polyaniline nanowires (PANi NWs) were grown Au working electrode using cyclic voltammetry (CV) chronoamperometry (CA). Using CV analysis, several kinetic parameters of interest, such as diffusion coefficient, D, the heterogeneous standard rate constant, k0, determined. The formation PANi in occurred through diffusion-controlled process with slow...
In this paper, Fe 3 O 4 /graphene oxide/chitosan (FGC) nanocomposite was synthesized using coprecipitation method for application to removal of nickel ion (Ni(II)) from aqueous solution by adsorption process. To determine residue Ni(II) ions concentration in after process, we have used UV-Vis spectrophotometric method, which is an effective and exact monitoring at low level dimethylglyoxime (DMG) as a complex reagent with Ni(II), has specific peak the wavelength 550 nm on spectra. A number...
In this study, we present a novel approach to prepare of colorimetric chemical sensor for H2O2 and glucose biosensor basing on the use peroxidase-like activity silver nanoparticles decorated reduced graphene oxide sheets ([email protected]) nanocomposite. Herein, [email protected] nanocomposite was synthesized by one-step hydrothermal reducing method its physico-chemical properties were characterized X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Ultraviolet–visible...
A metal-organic framework MIL-53(Fe) was successfully synthesized by a simple hydrothermal method. sample characterized, and results indicated that the formed single phase with small particle size of 0.8 μm homogeneous distribution obtained. The has been used to modify glassy carbon electrode (GCE) drop-casting technique. Cyclic voltammetry (CV) electrochemical impedance spectroscopy (EIS) measurements MIL-53(Fe)-modified GCE showed immobilized onto surface behavior GCE/MIL-53(Fe) stable. In...
A novel nanostructured material based on ERGO/PANi NWs/AgNFs was electrosynthesized a Pt microelectrode and used for the first time to develop an electrochemical DNA sensor.
We report here a development of novel and label-free electrochemical DNA sensor based on nanostructured electrode multi-walled carbon nanotubes/manganese dioxide nano-flowers-like/polyaniline nanowires (MWCNTs/MnO 2 /PANi NWs) nanocomposite. The nanocomposite was synthesized in situ onto the interdigitated platinum microelectrode (Pt) using combined chemical-electrochemical synthesis method: chemical preparation MWCNTs/MnO electropolymerization PANi NWs. fabricated NWs used for first time to...
Considering on required detection time and sensitivity, electrochemical method is an excellent candidate for ascorbic acid (AA) sensing. We propose using the synergistic effects of iron(0)/iron(III) oxide decorated electrochemically reduced graphene (ERGO/Fe-Fe 2 O 3 ) modified Pt microelectrode as AA sensor cyclic voltammetry (CV) technique. Herein, ERGO/Fe-Fe was directly fabricated a novel one-step electrosynthesis. Fe-Fe acts oxidized-nanozyme with works redox centers electrode oxidation...
In this work, silver nanoparticles decorated onto polyaniline nanowires were synthesized site-specifically Pt working electrodes (with only 0.8 mm2 area) using a novel, rapid, and effective electrochemical procedure: electropolymerization of PANi NWs electrodeposition AgNPs. The complementary properties AgNPs obtained, including high surface area, activity, biocompatibility, chemical stability good adhesion with the electrode surface. Obtained results showed advantages electrosynthesis...
A triple electrode setup with a Pt pseudo‐reference integrated in polydimethylsiloxane‐ (PDMS‐) based microchamber was designed and fabricated. The electrodes were deposited onto SiO 2 /Si substrate by sputtering. PDMS patterned using an SU‐8 mold sealed oxygen plasma. Polypyrrole nanowires (PPy NWs) electrochemically grown situ at accurate position of the working instead open system. DNA probe sequences simply introduced into channel to form bonds nanowires. detection limit 20 pM achieved...
A graphene oxide/silver nanoparticles (GO/AgNPs) nanocomposite was synthesized directly onto a screen-printed electrode (SPE) using one-step electrochemical synthesis process. The obtained result is that the SPE modified by AgNPs with an average diameter of 11.5 nm which distributed evenly on GO sheets. 0.01 M AgNO 3 solution dropped SPE/GO and chronoamperometry (CA) method potential −1.2 V time period 10 s were optimal conditions. Then, SPE/GO/AgNPs applied in developing sensor to detect...
In this study, a simple, label-free, electrochemical immunosensor system, including three-electrode transducer and microchamber, was designed, fabricated, integrated with focus toward the detection of Newcastle disease virus (NDV). The chicken egg yolk antibodies (IgY) against NDV were used as biological recognition element, replacing purified IgG that require complex extraction process time-consuming. IgY immobilized on sensor surface using PrA/GA SAM/NHS approaches. showed high sensitivity...
In this work, an effective nanocomposite-based adsorbent directed to adsorb cobalt (Co2+) ion was successfully synthesized from graphene oxide (GO), polyvinyl alcohol (PVA), and magnetite (Fe3O4) nanoparticles via a coprecipitation technique. The GO/PVA/Fe3O4 nanocomposite applied for Co2+ removal with the optimized working conditions including 100 min of contact time, 0.01 g dosage, pH 5.2, 50°C temperature. investigation adsorption kinetics showed that onto followed pseudo-second-order...
Owing to the COVID-19 pandemic, huge amounts of disposable face masks have been manufactured and used, these discarded be treated. In this study, we propose a simple approach for reusing nonwoven polyester fabric (NWPF) from masks. approach, NWPF is utilized as supporter coating layer graphene oxide/Fe 3 O 4 /chitosan (GFC) form GFC/NWPF adsorbent at room temperature via spray method that does not require any solvent. The specific properties GFC, NWPF, were analysed X-ray diffraction,...
Electrochemical DNA sensors based on nanocomposite materials of polyaniline nanowires (PANi NWs) have been published in the literature. However, it is interesting that there are very few research studies related to development electrochemical PANi NWs individually. In this study, were synthesized site-specifically a Pt microelectrode with only 0.785 mm2 area using an electropolymerization procedure. The electrosynthesis allows direct deposition onto rapid and cost-effective way. good...
In this work, we report a simple electrochemical method to fabricate label-free and reagentless sensor for microRNA detection based on self-assembly of multifunctional layer gold nanoparticles-modified glassy carbon electrodes (AuNPs/GCEs).