A5035080554- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Analytical Chemistry and Sensors
- Corrosion Behavior and Inhibition
- Heavy metals in environment
- Concrete Corrosion and Durability
- Supercapacitor Materials and Fabrication
- Toxic Organic Pollutants Impact
- Electrocatalysts for Energy Conversion
- Heavy Metals in Plants
- Hydrogen embrittlement and corrosion behaviors in metals
- Biodiesel Production and Applications
- Heavy Metal Exposure and Toxicity
- Water Quality and Pollution Assessment
- Fuel Cells and Related Materials
- Nanomaterials for catalytic reactions
- Inorganic and Organometallic Chemistry
- Carbon and Quantum Dots Applications
- Mosquito-borne diseases and control
- Advanced Nanomaterials in Catalysis
- Catalytic Processes in Materials Science
- Carbon Nanotubes in Composites
- Advancements in Battery Materials
- Geochemistry and Geologic Mapping
Obafemi Awolowo University
2016-2025
University of South Africa
2019-2024
Lagos State University
2024
North-West University
2015-2020
Adekunle Ajasin University
2016
Ekiti State University
2016
Maria Mitchell Association
2015
University of Johannesburg
2011-2013
University of Pretoria
2008-2013
The corrosion inhibition properties of some organic dyes, namely Sunset Yellow (SS), Amaranth (AM), Allura Red (AR), Tartrazine (TZ) and Fast Green (FG), for mild steel in 0.5 M HCl solution, were investigated using gravimetric, potentiodynamic polarization techniques quantum chemical calculations. results showed that the studied dyes are good inhibitors with enhanced efficiencies. efficiency all increases increase concentration, decreases temperature. presence KI due to synergistic...
Abstract Glassy carbon electrode (GCE) was modified with metal oxides (MO = Fe 3 O 4 , ZnO) nanoparticles doped phthalocyanine (Pc) and functionalized MWCNTs the electrocatalytic properties were studied. Successful synthesis of oxide MO/Pc/MWCNT composite confirmed using FTIR, Raman SEM techniques. The electrodes characterized cyclic voltammetry (CV) technique. behaviour towards epinephrine (EP) norepinephrine (NE) oxidation investigated CV DPV. Result showed that GCE-MWCNT/Fe /2,3-Nc,...
The inhibition of mild steel corrosion in 1 M HCl solution by some ionic liquids (ILs) namely, 1-hexyl-3-methylimidazolium trifluoromethanesulfonate [HMIM][TfO], tetrafluoroborate [HMIM][BF4], hexafluorophosphate [HMIM][PF6], and iodide [HMIM][I] was investigated using electrochemical measurements, spectroscopic analyses quantum chemical calculations. All the ILs showed appreciably high efficiency. At 303 K, results measurements indicated that studied are mixed-type inhibitors. adsorption...
The electrochemical response of serotonin on the modified electrode based multiwalled-carbon-nanotube (MWCNT) doped respectively with nickel, zinc and iron oxide nanoparticles coating glassy carbon (GCE) at physiological pH 7 was determined using cyclic voltammetry (CV) square wave (SWV). GCE/MWCNT-metal electrodes exhibited excellent electrocatalytic activity towards detection large peak current lower oxidation potentials compared to other investigated. dynamic range for determination...
Abstract The electrocatalytic properties of metal oxides (MO = Fe 3 O 4 , ZnO) nanoparticles doped phthalocyanine (Pc) and functionalized MWCNTs, decorated on glassy carbon electrode (GCE) was investigated. Successful synthesis the oxide MO/Pc/MWCNT composite were confirmed using UV-Vis, EDX, XRD TEM techniques. modification GCE with MO their also cyclic voltammetry (CV) technique. GCE-MWCNT/ZnO/29H,31H-Pc best towards DA detection very low limit (0.75 μM) which compared favourably...
Electrochemical properties and sensor application of multi-walled carbon nanotubes (MWCNTs), doped with metal oxides [(MO=nickel oxide (NiO), zinc (ZnO) iron (Fe 3 O 4 )] nanoparticles was investigated using FTIR, XRD, UV-vis spectroscopy, Raman TEM, SEM, EDX, cyclic voltammetry techniques.Electrochemical oxidation dopamine on a glassy electrode (GCE) modified (GCE/MWCNT/NiO, GCE/MWCNT/ZnO, GCE/MWCNT/Fe ) examined by voltammetry, EIS square wave in 0.1 M phosphate buffer solution PBS at pH...
The inhibition of the corrosion N80 steel in 3.5 wt. % NaCl solution saturated with CO2 by four porphyrins, namely 5,10,15,20-tetrakis(4-hydroxyphenyl)-21H,23H-porphyrin (HPTB), 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphyrin (T4PP), 4,4′,4″,4‴-(porphyrin-5,10,15,20-tetrayl)tetrakis(benzoic acid) (THP) and 5,10,15,20-tetraphenyl-21H,23H-porphyrin (TPP) was studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, scanning microscopy (SECM) electron (SEM)...
Three new chalcone derivatives were synthesized, characterized, investigated for photo-cross-linking characteristics, and used as corrosion inhibitors mild steel in 1 M HCl using electrochemical, spectroscopic theoretical methods.
The effects of seven macrocyclic compounds comprising four phthalocyanines (Pcs) namely 1,4,8,11,15,18,22,25-octabutoxy-29H,31H-phthalocyanine (Pc1), 2,3,9,10,16,17,23,24-octakis(octyloxy)-29H,31H-phthalocyanine (Pc2), 2,9,16,23-tetra-tert-butyl-29H,31H-phthalocyanine (Pc3) and 29H,31H-phthalocyanine (Pc4), three naphthalocyanines 5,9,14,18,23,27,32,36-octabutoxy-2,3-naphthalocyanine (nPc1), 2,11,20,29-tetra-tert-butyl-2,3-naphthalocyanine (nPc2) 2,3-naphthalocyanine (nP3) were investigated...
Abstract Molecularly imprinted polymers (MIPs) have been widely used for the modification of electrodes because their native specificity intrinsic template molecules. The importance catecholamines in neurological and general well‐being every individual cannot be overemphasized. Disorders associated with imbalance catecholamine levels can diagnosed electrochemical sensors capable determination presence other biological interferents extracellular fluids. MIPs based designed selective...
Nitrite (NO2-) and nitric oxide (NO) have been identified as an environmentally hazardous analytes from discharged industrial effluents. Thus in this study, nickel (NiO) hydroxide (Ni(OH)2) nanoparticles were synthesized using the complexation-precipitation method their catalytic properties towards NO2- NO investigated. The success of synthesised was confirmed characterisation techniques, such X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) Fourier transformed...
The corrosion inhibition activity of a newly synthesized Schiff base (SB) from 3-acetyl-4-hydroxy-6-methyl-(2H)-pyran-2-one and 2,2'-(ethylenedioxy)diethylamine was investigated on the mild steel in 1 M HCl solution using potentiodynamic polarization electrochemical impedance spectroscopic techniques. Ultraviolet-visible (UV-vis) Raman techniques were used to study chemical interactions between SB surface. found be relatively good inhibitor HCl. efficiency increases with increase...
This study determined the presence and levels of Polycyclic Aromatic Hydrocarbons (PAHs) groundwater in Moro, Edun-Abon, Yakoyo Ipetumodu communities Ife-North Local Government Area Osun State. was with a view to create public awareness about safety as source for domestic purposes (e.g., drinking, cooking etc.) non-industrial area. Water samples were collected on seasonal basis, comprising three months (August–October) wet season (December–February) dry season. The PAHs water extracted...