Preparation and Characterization of Cobalt and Zinc Oxide Nanoparticles using Green Synthesis method for technological development

Sultan, Fatma A.; El-Salamony, Radwa A.; Said, Shima A.; Abdu, Kamilia S.

doi:10.58675/2636-3305.1694

Preparation and Characterization of Cobalt and Zinc Oxide Nanoparticles using Green Synthesis method for technological development

Authors

¹ Nanomaterials Lab., Physics Department, Faculty of Science, Al-Azhar University (GirlBranch), Cairo 11751, Egypt

² Reactor Engineering and Operations Lab., Process Development Department, Egyptian Petroleum Research Institute, Nasr City, Cairo11727, Egypt

10.58675/2636-3305.1694

Abstract

The objective of this study was to investigate the action of eggplant as a plant extract on the physical properties of cobalt oxide (Co3O4) and zinc oxide (ZnO) nanoparticles synthesized by sol gel for future use as dye degradation photo catalysts. The chemical sol-gel method yields (Co3O4)c and (ZnO)c samples whereas the green synthesis method using eggplant produces (Co3O4)gs and (ZnO)gs samples. Structural studies using XRD reveal the formation of the cubic and the hexagonal phases for Co3O4 and Snow respectively. No valuable changes occur in lattice parameters upon green synthesis. The fourier transform infrared studies confirm the formation of oxide networks for both. It also reveals the creation of -OH groups that enhance the photo degradation efficiency. Optical data demonstrate a wider optical band gap for (Co3O4)gs. On the contrary, (ZnO)c shows a smaller optical band gap value upon green synthesis. Regarding the detected photoluminescence data, (Co3O4)c and (Co3O4)gs show, respectively, blue and green emission colors, whereas both (ZnO)c and (ZnO)gs produce green emissions. Since rare works have been recorded, the present data nominate green synthesized oxides using eggplant extract as leaders for photocatalytic and light emission technology.

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