Eggplant as an appreciable bio-template for green synthesis of NiO nanoparticles: Study of physical and photocatalytic properties |
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Affiliation: | 1. Department of Chemical Engineering, Shiraz University, Shiraz, 71345, Iran;2. Nano Photocatalysis Lab, Department of Chemistry, Shiraz University, Shiraz, 7194684795, I.R, Iran |
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Abstract: | In this study, we described a green, sustainable, and feasible method for synthesizing 5 nm NiO nanoparticles. Eggplant skin was chosen as an appropriate bio-template with a high potential to induce its structure into the desired metal oxide. Two approaches were used and compared to synthesize NiO bio-template: hydrothermal and sol-gel. The morphology and physical properties of the obtained NiO nanoparticles were evaluated using FESEM, TEM, XRD, BET, FT-IR, TGA, and UV–Vis analyses. All these methods confirm that the hydrothermal method is a better approach for synthesizing NiO bio-template nanoparticles than the sol-gel method. UV–Vis analysis revealed that the NiO nanoparticles produced by the hydrothermal method have a low bandgap of 2.88 eV, which is a key factor for photocatalytic applications. |
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Keywords: | Bio-template Eggplant Green chemistry NiO nanoparticles Hydrothermal method |
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