A5077737830- Advanced Photocatalysis Techniques
- Gas Sensing Nanomaterials and Sensors
- Electrochemical Analysis and Applications
- TiO2 Photocatalysis and Solar Cells
- Advanced Nanomaterials in Catalysis
- Advanced oxidation water treatment
- Advanced biosensing and bioanalysis techniques
- Copper-based nanomaterials and applications
- Perovskite Materials and Applications
- Analytical Chemistry and Sensors
- Environmental remediation with nanomaterials
- Electronic and Structural Properties of Oxides
- Water Quality Monitoring and Analysis
- Multiferroics and related materials
University of Johannesburg
2023-2025
Towards the engineering of semiconductors for improved visible light photoelectrochemical degradation organic pollutants in wastewater, we present preparation a Z-scheme heterojunction Bi2O2S and ZnO nanoparticles removal ciprofloxacin from wastewater. The Bi2O2S/ZnO nanocomposite was synthesised via an in-situ hydrothermal method deposited on FTO substrate to form photoanode. photoanodes were characterised with electron microscopy, XRD, photo-electrochemistry, photoluminescence, XPS UV/Vis...
Towards the photoelectrocatalytic degradation of ciprofloxacin, BFO/BVO heterojunction was constructed to improve performance individual semiconductors. The enhanced photoanode attributed increase in visible light harvesting, greater current mobility leading higher density, low charge transfer resistance, and recombination rate photogenerated electron hole. BFO, BVO photoanodes prepared were immobilized on fluorine doped tin oxide coated glass characterised using x-ray diffractometry,...
We report the preparation and application of poly (ethylene) glycol (PEG) coated magnetite nanoparticles (MNPs) catalyst for heterogeneous electro-Fenton (HEF) degradation sulfamethoxazole in real wastewater PEG-coated MNPs four MNP:PEG ratios were synthesised using co-precipitation method. The MNP characterised FTIR, XRD, EDX, TEM, CHN elemental analysis. It was observed that coating with PEG influences nanoparticle size, agglomeration tendencies catalytic efficiency properties HEF process....
To develop a semiconductor interface with enhanced spatial separation of carriers under visible light irradiation for the photoelectrochemical (PEC) oxidation process, we explored fabrication Bi2O2S/NiTiO3 heterojunction photoanode removal sulfamethoxazole in water. The was synthesized via an situ hydrothermal and it exhibited better absorption charge separation, as well reduced rate recombination photoexcited species compared to pristine Bi2O2S NiTiO3. improved photoelectrocatalytic...
Electrodeposited bismuth ferrite (BiFeO3) thin films on fluorine-doped tin oxide (FTO) substrate were employed as photoanodes in the photoelectrocatalytic degradation of methylene blue. The BiFeO3 electrodeposited for 300 s, 600 1200 1800 s and 3600 characterised with XRD, field emission scanning electron microscopy (FESEM) UV-vis diffuse reflectance spectroscopy. SEM images displayed different morphology at electrodeposition times which affects (PEC) performances. FESEM cross-sectional area...