A5036084366- Nanoparticle-Based Drug Delivery
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Natural product bioactivities and synthesis
- Membrane Separation Technologies
- Ethnobotanical and Medicinal Plants Studies
- Advanced Drug Delivery Systems
- Synthesis and biological activity
- Nanomaterials for catalytic reactions
- Essential Oils and Antimicrobial Activity
- Drug Solubulity and Delivery Systems
- Traditional and Medicinal Uses of Annonaceae
- Water Treatment and Disinfection
- Carbon Nanotubes in Composites
- Multicomponent Synthesis of Heterocycles
- Electrochemical sensors and biosensors
- Phytochemistry and Biological Activities
- Adsorption and biosorption for pollutant removal
- Electrochemical Analysis and Applications
- Quantum Dots Synthesis And Properties
- Advanced biosensing and bioanalysis techniques
- Phytochemistry and Bioactive Compounds
- Membrane-based Ion Separation Techniques
- Synthesis of Organic Compounds
- HIV/AIDS drug development and treatment
Rhodes University
2016-2025
Nanomaterials Research (United States)
2018
University of Johannesburg
2006-2015
University of the Witwatersrand
2000-2011
University of Kassel
1990-2000
Elimination of toxic organic compounds from wastewater is currently one the most important subjects in water pollution control. Eosin Yellow, an anionic xanthene fluorescent dye, known to be carcinogenic, originates mainly textile industrial processes and resistant conventional chemical or biological treatment methods. Photocatalysis using non metal/platinum group metal-codoped TiO2 may provide effective means removing such dyes contaminated water. In this study, nitrogen/palladium-codoped...
Current study reports a simple and one-pot synthesis of zinc oxide nanoparticles (ZnONPs) using an aqueous extract Solanum torvum evaluation its toxicological profile (0.5% w/w 1.0% w/w) in Wistar albino rats with respect to the biochemical index. The were characterized ultraviolet–visible spectroscopy, transmission electron microscopy, Fourier transform infrared spectroscopy X-ray diffraction technique. Dynamic light scattering (DLS) zeta potential synthesized analyzed know average size...
In the present study, silver nanoparticles (AgNPs) were synthesized using aqueous leaf extracts of three Congolese plant species, namely Brillantaisia patula (BR-PA), Crossopteryx febrifuga (CR-FE) and Senna siamea (SE-SI). The obtained AgNPs studied for their optical, structural, surface morphological antibacterial properties. prepared characterized by UV-Visible spectra, Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray spectroscopy (EDX)...
Abstract
Some organic compounds are major water pollutants. They can be toxic or carcinogenic even at low concentrations. Current technologies, however, fail to remove these contaminants parts per billion (ppb) levels. Here we report on the removal of pollutants from using cross-linked nanoporous polymers that have been copolymerized with previously functionalized carbon nanotubes. These novel model species such as p-nitrophenol by much 99% a 10 mg/L spiked sample compared granular activated and...
Abstract Insoluble nanoporous cyclodextrin (CD) polymers were synthesized using bifunctional isocyanate linkers. The ability of these to remove selected organic pollutants from water at varying concentrations was studied. investigated high‐priority chlorinated disinfection by‐products (DBPs) and a common odour‐causing compound in water, 2‐methylisoborneol (2‐MIB). unpleasant musty odour imparted by 2‐MIB geosmin can be detected the human nose even ng L −1 (parts per trillion) levels....
The study of coating carbon nanotubes with metal/oxides nanoparticles is now becoming a promising and challenging area research. To optimize the use in various applications, it necessary to attach functional groups or other nanostructures their surface. combination distinctive properties expected be applied field emission displays, nanoelectronic devices, novel catalysts, polymer ceramic reinforcement. synthesis these composites still largely based on conventional techniques, such as wet...
The use of an exfoliated graphite (EG) electrode in the square wave voltammetric detection bisphenol A (a model phenolic pollutant) water, whereby fouling challenge is mitigated, described. oxidation peak BPA was observed at about 0.45 V phosphate buffer solution pH 10. current response exhibited a linear relationship with concentration over range from 1.56 µM–50 µM. limit calculated to be 0.76 EG surface renewed after each measurement excellent reproducibility. real sample application also...
Metal‐ion‐ (Ag, Co, Ni and Pd) doped titania nanocatalysts were successfully deposited on glass slides by layer‐by‐layer (LbL) self‐assembly technique using a poly(styrene sulfonate sodium salt) (PSS) poly(allylamine hydrochloride) (PAH) polyelectrolyte system. Solid diffuse reflectance (SDR) studies showed linear increase in absorbance at 416 nm with the number of m‐TiO 2 thin films. The LbL assembled films tested for their photocatalytic activity through degradation Rhodamine B under...
Magnetic nanocomposites composed of superparamagnetic magnetite nanoparticles in a pectin matrix were synthesized by an situ coprecipitation method. The acted as stabilizer and size control host for the (MNPs) ensuring particle homogeneity. effects different reactant ratios nanocomposite drying conditions on magnetic properties investigated. characterized X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM), energy dispersive spectroscopy (EDX), Fourier‐transform...
Cadmium telluride (CdTe) semiconductor quantum dots (QDs) are brightly luminescent nanocrystals that have emerged as a new class of fluorescent probes for in vivo bioimaging and theranostic applications. CdTe QDs toxicity to normal human cells is minimized by coating with less toxic ZnS ZnSe shell forming core–shell nanostructure. However, or insufficient prevent the leaching Cd metal ions. To further minimize toxicity, thiol dual capped CdTe/CdSe/ZnSe multi-core-multi-shell were coated...