On the Use of Moringa Oleifera Leaves Extract for the Biosynthesis of NiO and ZnO Nanoparticles
| Autor: | Malik Maaza, N. M. Ndiaye, I. Ngom, A. Fall, Balla D. Ngom, M. Bakayoko |
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| Rok vydání: | 2020 |
| Předmět: |
Photoluminescence
Materials science Mechanical Engineering Nickel oxide Non-blocking I/O chemistry.chemical_element 02 engineering and technology Zinc 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry Mechanics of Materials Oxidizing agent General Materials Science Diffuse reflection Crystallite 0210 nano-technology Nuclear chemistry Wurtzite crystal structure |
| Zdroj: | MRS Advances. 5:1145-1155 |
| ISSN: | 2059-8521 |
| DOI: | 10.1557/adv.2020.212 |
| Popis: | This contribution reports on the biosynthesis of nickel oxide and zinc oxide nanoparticles (NiO-NPs & ZnO-NPs) via a natural extract from Moringa Oleifera leaves as an effective chelating and/or oxidizing/reduction agent of nickel nitrate hexahydrate and zinc nitrate hexahydrate. The structural and optical properties of these two types of semiconductors obtained in a similar procedure are investigated using X-rays Diffraction (XRD), Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR), diffuse reflectance UV-Visible-NIR and Photoluminescence (PL) techniques. The structural analysis shows the formation of pure cubic NiO-NPs and pure wurtzite ZnO-NPs with an average crystallite size of 17.80 nm and 10.81 nm respectively. Their band gaps, calculated from the diffuse reflectance analysis were found to be 4.28 eV and 3.35 eV respectively. |
| Databáze: | OpenAIRE |
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