A5046295709- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Mesoporous Materials and Catalysis
- Gas Sensing Nanomaterials and Sensors
- Advanced biosensing and bioanalysis techniques
- Catalytic Processes in Materials Science
- Enzyme Catalysis and Immobilization
- Catalysis and Oxidation Reactions
- Analytical Chemistry and Chromatography
- Advanced Chemical Sensor Technologies
- Advanced Nanomaterials in Catalysis
- Crystallization and Solubility Studies
- Analytical chemistry methods development
- Chemical and Physical Properties in Aqueous Solutions
- Microbial Metabolic Engineering and Bioproduction
- Microbial Metabolism and Applications
- Steroid Chemistry and Biochemistry
- Biosensors and Analytical Detection
- Mechanical and Optical Resonators
- Ferroelectric and Piezoelectric Materials
- Electrical and Thermal Properties of Materials
- Pharmacological Effects of Natural Compounds
- Enzyme-mediated dye degradation
- Diatoms and Algae Research
National Science and Technology Development Agency
2025
Chulalongkorn University
2010-2022
National Nanotechnology Center
2020
Imperial College London
1994-1998
Inorganic electrode materials of low cost, lower complexity, and high stability have become the more preferred choice over enzyme usage in electrochemical sensors. In this work, copper oxide (CuO) nanorods (NRs) were synthesized on foil as electrodes through anodization annealing processes. The used to analyse organophosphate pesticides (OPPs) interference molecules by cyclic voltammetry. CuO NR sensor was able identify quantify different kinds OPPs with an elevated sensitivity 1.269, 1.425,...
This work aims at evaluating a utilization of diverse clay mineral/gold nanoparticles/acetylcholinesterase (clay/AuNPs/AChE) biosensors by using principal component analysis (PCA) for the discrimination pesticide types and their concentration levels both in synthetic real samples. Applications simple low-cost clay/AuNP composites different characteristics as modified-electrode materials are highlighted. Four minerals, namely, platelike kaolinite (Kaol: 1:1 aluminum phyllosilicate), globular...
Enzymatic pesticide sensor has long been used owing to its high selectivity and sensitivity; however, a number of limitations prevented it from commercialization portability. In this work, non-enzymatic based on nanomaterial was proposed as an alternative overcome the limits enzyme sensor. Copper oxide nanorods synthesized by direct anodization annealing techniques which require less preparation low cost. The CuO NR arrays electrode applied in electrochemical analysis organophosphates...
Currently, most electrochemical based pesticide sensors use acetylcholinesterase enzyme modifying on working electrode surface to sense the concentration of organophosphate pesticides. Since this method has high sensitivity and easy prepare; however cost is very expensive stability activity poor which result in short lifetime. From those drawbacks current sensor, non-enzymatic sensor an alternative way detect with lower cost, higher stability. In work, copper oxide nanorods were used...
Abstract Mesocellular foam carbon (MCF-C) is one the captivating materials for using in gas phase dehydrogenation of ethanol. Extraordinary, enlarge pore size, high surface area, acidity, and spherical shape with interconnected diffusion. In contrary, occurrence coke a majority causes inhibiting active sites on catalyst surface. Thus, this study aims to investigate optimize higher catalytic activity, also avoid formation. The MCF-C was synthesized investigated various techniques. spent...
A phenol enzyme biosensor was fabricated in this research using disposable screen-printed carbon electrode modified with gold nanoparticles (AuNPs), polypyrrole (PPy) and immobilized horseradish peroxidase (HRP) by electropolymerization method.The physical chemical properties of the characterized scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) while electrochemical analysis performed amperometry.The fabrication parameters, precursor concentrations, were...
To evaluate the effectivity of low-cost electrodes for application pesticide analysis, two alternatives fabricated from Cu foil and screen-printed carbon (SPCE) modified with CuO nanorod arrays were compared. foils through anodization annealing; SPCEs electrodeposition anodization; SEM images showed nanorods on smaller denser than those foils. The current drop sensitivity (ΔI/I) caused by inhibition obtained cyclic voltammograms as -0.23 SPCE -0.26 foil. results indicated that our...
We were investigating the effect of parathion and chlorpyrifos, organophosphate group pesticides (OPs) commonly used in Thailand's agricultural sector, on Cu foil electrodes modified with CuO nanohair arrays. The successfully synthesized using anodization annealing; physical structures evaluated SEM; functional groups pesticide analyzed ultraviolet-visible spectroscopy. Electrochemical tests demonstrated differences current when applied cyclic voltage between -1.5 to 0.5 V. existing each...
γ-Alumina (γ-Al 2 O 3 ) doped alginate gel (AEC) was developed as a cell carrier in fermentation processes of Saccharomyces cerevisiae M.30 for ethanol production and Clostridium butyricum DSM 5431 1,3-propanediol production. In single batch system fermentation, the final concentration suspended (SC), immobilized on γ-Al (AC) AEC cultures were 82.4, 77.1 74.6 g/l, respectively. 4-cycle repeated culture demonstrated good potential reusability. Its conversion yield 1st, 2nd 3rd comparable to...
Attractive for MEMS, PZT thick films are often microstructured on Si supporting platforms to span the gap between ceramics and thin film technologies. Printing process might lead lower cost than ceramic open routes MEMS applications. In this paper processing by screen-printing of Au/PZT/Au thick-films supported alumina or completely released from substrate described. Investigations microstructures nevertheless show densification those bulk ceramics. Prior selective coating deposition,...