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Articles by P. Mfengwana
Total Records ( 1 ) for P. Mfengwana
  R. Lefojane , P. Direko , P. Mfengwana , S. Mashele , N. Matinise , M. Maaza and M. Sekhoacha
  Background and Objectives: Applications of nanoparticles in the biomedical field are diverse. Metal-based nanoparticles are attracting many researchers in biomedicine. Whilst various methods of nanoparticle synthesis are being explored, green synthesis is considered an environmentally friendly, safer and cost-effective method. The objectives of the study encompass the green synthesis of nickel oxide nanoparticles (NiO NPs) using bark extract of Spirostachys africana and their characterization using various techniques. Materials and Methods: Distilled water, S. africana bark and nickel nitrate hexahydrate (Ni (NO3)2.6H2O) were some of the materials used. The methodologies employed were extraction, phytochemical analysis, green synthesis, oven drying, annealing and characterization of the synthesized nanoparticles using different techniques. Results: In the phytochemical analysis test, seven phytochemical constituents tested positive. In X-ray photoelectron spectroscopy (XPS), nickel and oxygen spectra were observed. X-ray diffraction (XRD) confirmed the presence of nickel and oxygen elements. Fourier transform Infrared spectroscopy (FTIR) showed peaks that are associated with the presence of C-O and C=C. Scanning Electron Microscopy (SEM) revealed agglomerated and amorphous morphology. Ultraviolet-visible spectroscopy (UV-VIS) showed a maximum peak of 240 nm. Conclusion: NiO NPs were successfully synthesized using the green chemistry route (green synthesis). Physical properties of NiO NPs were investigated and S. africana bark extract showed the presence of secondary metabolites.
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