Effectual Role of Abelmoschus esculentus (Okra) Extract on Morphology, Microbial and Photocatalytic Activities of CdO Tetrahedral Clogs

Abstract

The approach based on synthesis has a significant advantage than other process of synthesis. The role of surfactant is the key parameter to modify the morphology of nanoparticles. But the synthesis process needs an alternative option on replacing chemical organic surfactant. So the green extract will support as surfactant and helps to modify the morphology. On this basis the present work reports that, the cadmium oxide nanoparticles (CdO NPs) are synthesized using Abelmoschus esculentus fruit extract at different volume concentration of 10, 20 and 30 ml under bio synthesis process. The prepared samples are characterized by XRD, UV-DRS, PL, FT-IR, FE-SEM, EDX, HR-TEM analysis. The XRD pattern confirms the cubic structure with average particle size of 89.8–18.5 nm. The estimated band gap energy is found in the range 2.19–1.89 eV. Near UV and violet indigo emission in PL spectrum leads the presence of crystal defects in CdO lattice. Presence of vibrational modes of chemical species in the samples, are characterized by Fourier Transform Infrared (FT-IR) spectrum. The elemental compositions are detected by using energy dispersive X-Ray analysis (EDAX). The particle size and morphology with intense magnification is confirmed by FE-SEM and TEM-SAED analysis. The electrical conductivity of the A. esculentus based CdO nanoparticles is studied from I-V characteristics and conductivity measurements. The antibacterial and fungal activities of A. esculentus based CdO nanoparticles are tested for different bacterial organisms like Staphylococcus aureus, Bacillus substilis, Escherichia coli and Salmonella paratyphi and fungal organism like Candida albicans, Aspergillus niger and Aspergillus fumigates under the zone inhabitation method. The photocatalytic activities of the CdO samples on degradation of Methylene Blue azo dye under UV light irradiation are also studied.