A5008715301- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Analytical Chemistry and Sensors
- Advanced Chemical Sensor Technologies
- Advanced biosensing and bioanalysis techniques
- Advanced Sensor and Energy Harvesting Materials
- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Gas Sensing Nanomaterials and Sensors
- Photosynthetic Processes and Mechanisms
- melanin and skin pigmentation
- Diabetic Foot Ulcer Assessment and Management
- Enzyme Catalysis and Immobilization
- RNA regulation and disease
- Catalytic Processes in Materials Science
- Carbon and Quantum Dots Applications
- Carbon Nanotubes in Composites
- Electrospun Nanofibers in Biomedical Applications
- Photochromic and Fluorescence Chemistry
- Folate and B Vitamins Research
- Forensic Toxicology and Drug Analysis
- Advanced Sensor Technologies Research
- Wound Healing and Treatments
- Porphyrin Metabolism and Disorders
Florida International University
2015-2020
Molecular Research Institute
2018
Lakehead University
2017
University of Georgia
2011-2016
Piedmont Athens Regional
2014
National Taipei University of Technology
2007-2012
Spinach thylakoids were immobilized onto multiwalled carbon nanotubes using a molecular tethering chemistry. The resulting thylakoid–carbon nanotube composites showed high photo-electrochemical activity under illumination. Multiple membrane proteins have been observed to participate in direct electron transfer with the electrode, generation of photocurrents, first its kind reported for natural photosynthetic systems. Upon inclusion mediator, photo-activity was enhanced. major contributor...
Cyanobacteria possess unique and exciting features among photosynthetic microorganisms for energy conversion applications. This study focuses on production of direct electricity using a cyanobacterium called Nostoc sp. (NOS) as photo-biocatalyst immobilized carbon nanotubes the anode photo-bioelectrochemical cells. By illuminating with light (intensity 76 mW cm−2) NOS nanotube (CNT) modified electrode generated photocurrent density 30 mA m−2 at 0.2 V (vs. Ag/AgCl). The contribution different...
Nanoparticles of TiO(2) or SnO(2) on screen-printed carbon (SP) electrodes have been developed for evaluating their potential application in the electrochemical sensing volatiles fruits and plants. These metal oxide nanoparticle-modified possess high sensitivity low detection limit p-ethylguaiacol, a fingerprint compound present volatile signature plants infected with pathogenic fungus Phytophthora cactorum. The electroanalytical data obtained using cyclic voltammetry differential pulse...
Wound management involves repeated clinical trips and procedures of lab tests over days. To eliminate this time lag provide real-time monitoring a wound's progress, we have designed an enzymatic biosensor for determining uric acid (UA) in wound fluid. Uric Acid is biomarker, having established correlation with wounds their healing. This electrochemical comprises enzyme urate oxidase (uricase, UOx) entrapped polyvinyl alcohol based cationic polymer enhanced stability. Results show that the...
This article presents the kinetic studies of oxygen reduction by one most important multicopper oxidases (fungal laccase) using classic tool electrochemistry: rotating ring-disk electrode (RRDE). Laccase was immobilized on a multiwalled carbon nanotube (MWNT) modified inert disk 1-pyrenebutanoic acid succinimidyl ester (PBSE), as tethering agent. The conditions for laccase immobilization MWNT were optimized to prepare highly active composite electro-catalyst O2 reduction. mechanistic well...
We report a disposable point-of-care sensing platform specific to salivary cortisol detection. The sensor is inkjet printed on paper substrate with metalloporphyrin based macrocyclic catalyst ink that can electrochemically reduce cortisol, captured by aptamer functionalized magnetic nanoparticles. consists of thin magnet disc, aligned at the back electrode, in order populate nanoparticle bound electrode area. Proof concept studies were performed detect levels human subjects high and low...
Carboxylic acid functionalized multi-walled carbon nanotube (f-MWCNTs) was synthesized by simple treatment of pristine nanotube. The surface morphology f-MWCNTs showed the existence functional groups on outer sidewalls f-MWCNTs. These groups, –OH and C=O species carboxylic were confirmed Fourier transform infrared spectroscopy. f-MWCNT applied to modify glassy electrode (GCE) study electrocatalysis acetaminophen. electrochemical studies better diffusion coefficient with stable signal,...
Abstract In this work, an electrochemical approach using uricase (UOx) as enzyme to detect uric acid (UA) for wound monitoring has been reported. UOx was entrapped in poly (vinyl alcohol) N‐methyl‐4(4’‐formylstyryl) pyridinium methosulfate acetal (PVA‐SbQ), a cationic polymer matrix. The polymer‐enzyme ratio immobilization calculated 53.2 μg cm −2 : 0.25 U . UA detected both optically well electrochemically. A redox electron shuttle, ferrocene carboxylic (FCA) used facilitate transfer....