Green synthesis of Silver Iron Zinc oxides Nanocomposite using Embelia Schimperia leaf extract for removal of ciprofloxacin from aqueous solution and antibacterial activity.

Abstract

Green-synthesis of metal-oxide nanocomposites is the synthesis from bioactive agents like plant microorganisms, and various bio-wastes, which are used for different applications such as wastewater treatments, degradation of dyes, antibacterial activity and reduction of the toxic metal. Pharmaceutic drug waste is one most pollutants in water quality which brings a chronological effect on fish, animals, human beings, and plants. To treat wastewater, conventional methods such as sedimentation, flotation, coagulation, and adsorption are utilized. However, pharmaceutical medicines in wastewater cannot be fully treated using these old methods. As a result, modern advanced photo catalytic process were used to treat these pharmaceutical drugs in wastewater. Removal of pharmaceutical wastewater by Photo catalysis process using green synthesized metal oxide nanocomposite is the most preferable one, less costly, eco-friendly, and simple process. This study was synthesize, optimize and characterize the Ag/Fe/ZnO Nanocomposite from Embelia schimperia leaf as a reducing agent within silver nitrate, iron chloride, and zinc acetate dehydrated as a precursor. The synthesized Ag/Fe/ZnO NCs were made at three operating condition such as pH (8-12), Temperature (55-90oC) and precursor concentration (0.05-0.1M). Response surface methodology used to analyze statistical experimental data at these three factors. The parameters such as pH 11.46, temperature 55 oC, and 0.099M of concentration of precursor were the optimum condition obtained for synthesized of Ag/Fe/ZnO NCs. The synthesized Ag/Fe/ZnO NCs was characterized by UV-Visible Spectrophotometer, Fourier transform infrared Spectrophotometer, X-ray diffraction spectroscopy, Dynamic Light Scattering, Scanning Electron Microscopy and Thermal Gravimetric Analysis. Finally, Ag/Fe/ZnO NCs were used to degrade ciprofloxacin medication using a 15W light source; Ag/Fe/ZnO NCs degrade 85% of ciprofloxacin. Ag/Fe/ZnO NCs also evaluated for antibacterial activities against E. coli, S. typhi, B. cereus, and S. aureus bacteria, with the results showing that the antibacterial activities is extremely efficient. Therefore, this study confirms that green synthesized of Ag/Fe/ZnO NCs used for both applications of removal of ciprofloxacin in aqueous solution and antibacterial activity.