ZnO nanoparticles via Moringa oleifera green synthesis: Physical properties & mechanism of formation
By N. Matinise, X. Fuku, K. Kaviyarasu, N. Mayedwa, M. Maaza. 2017
661 citations recorded by the source corpus.
Abstract The research work involves the development of better and reliable method for the bio-fabrication of Zinc oxide nanoparticles through green method using Moringa Oleifera extract as an effective chelating agent. The electrochemical activity, crystalline structure, morphology, isothermal behavior, chemical composition and optical properties of ZnO nanoparticles were studied using various characterization techniques i.e. Cyclic voltammetry (CV), X-ray powder diffraction (XRD), High resolution transmission electron microscopy (HRTEM), Selected area electron diffraction (SEAD), Differential scanning calorimetry/thermogravimetric analysis (DSC/TGA), Fourier Transform Infrared analysis (FTIR) and Ultraviolet spectroscopy studies (UV–vis). The electrochemical analysis proved that the ZnO nano has high electrochemical activity without any modifications and therefore are considered as a potential candidate in electrochemical applications. The XRD pattern confirmed the crystallinity and pure phase of the sample. DSC/TGA analysis of ZnO sample (before anneal) revealed three endothermic peaks around 140.8 °C, 223.7 °C and 389.5 °C. These endothermic peaks are attributed to the loss of volatile surfactant, conversion of zinc hydroxide to zinc oxide nanoparticles and transformation of zinc oxide into zinc nanoparticles. Mechanisms of formation of the ZnO nanoparticles via the chemical reaction of the Zinc nitrate precursor with the bioactive compounds of the Moringa oleifera are proposed for each of the major family compounds: Vitamins, Flavonoids, and Phenolic acids.
Subfields: Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/934252a5cbc94a7a113fc691c6162734b4c4a3e3
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In Electrical and Electronic Engineering
In Materials Chemistry
Citations in the corpus
- Green synthesis of ZnO nanoparticles using aqueous Brassica oleracea L. var. italica and the photocatalytic activity (2019, background): “overlapped with the N-H of the amines due to different bioactive compounds present in broccoli (59).”
- Green synthesis of zinc oxide nanoparticles: A review of the synthesis methodology and mechanism of formation (2020, background): “As it is believed that these compounds play an important role on the mechanism of formation of metal and metal oxides nanoparticles obtained by green synthesis (Król et al., 2017; Matinise et al., 2017; Shah et al., 2015; Singh et al., 2018).”