ZnO nanoparticles via Moringa oleifera green synthesis: Physical properties & mechanism of formation

• DOI: 10.1016/j.apsusc.2017.01.219
• Publication Date: 2017-01-27T12:45:15Z
• Authors: N. Matinise; X.G. Fuku; K. Kaviyarasu; N. Mayedwa; M. Maaza
• Keywords: Thermogravimetric analysis; Endothermic process

The research work involves the development of better and reliable method for bio-fabrication Zinc oxide nanoparticles through green using Moringa Oleifera extract as an effective chelating agent. electrochemical activity, crystalline structure, morphology, isothermal behavior, chemical composition optical properties ZnO were studied various characterization techniques i.e. Cyclic voltammetry (CV), X-ray powder diffraction (XRD), High resolution transmission electron microscopy (HRTEM), Selected area (SEAD), Differential scanning calorimetry/thermogravimetric analysis (DSC/TGA), Fourier Transform Infrared (FTIR) Ultraviolet spectroscopy studies (UV–vis). proved that nano has high activity without any modifications therefore are considered a potential candidate in applications. XRD pattern confirmed crystallinity pure phase sample. DSC/TGA sample (before anneal) revealed three endothermic peaks around 140.8 °C, 223.7 °C 389.5 °C. These attributed to loss volatile surfactant, conversion zinc hydroxide transformation into nanoparticles. Mechanisms formation via reaction nitrate precursor with bioactive compounds oleifera proposed each major family compounds: Vitamins, Flavonoids, Phenolic acids.