Facile microwave-assisted green synthesis of ZnO nanoparticles: application to photodegradation, antibacterial and antioxidant

• Published in: Journal of materials science. Materials in electronics Vol. 31; no. 2; pp. 1004 - 1021
• Main Authors: Mallikarjunaswamy, C., Lakshmi Ranganatha, V., Ramu, Ramith, Udayabhanu, Nagaraju, G.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.01.2020; Springer Nature B.V
• Subjects: Antiinfectives and antibacterials; Antioxidants; Biomedical materials; Characterization and Evaluation of Materials; Chemistry and Materials Science; Dyes; Electron microscopes; Excitation spectra; Irradiation; Materials Science; Methylene blue; Nanomaterials; Nanoparticles; Optical and Electronic Materials; Photodegradation; Photoluminescence; Raman spectroscopy; Room temperature; Synthesis; Ultraviolet radiation; Vacancies; Zinc oxide; Zinc oxides
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-019-02612-2

The present study reports the effective synthesis of zinc oxide nanoparticles (ZnO Nps) by microwave irradiation method using Indian bael ( Aegle marmelos ) juice as fuel. The synthesized nanostructures were characterized by X-ray diffraction, FT-IR, scanning electron microscope, transmission electron microscope, Raman Spectroscopy, photoluminescence and ultraviolet (UV)–visible studies. At room temperature, photoluminescence spectrum showed the excitation wavelength at 370 nm and emission peaks at 388 and 468 nm corresponding to Zn vacancies and O vacancies, respectively. Further, the effectiveness of the synthesized zinc oxide nanoparticles was tested for methylene blue dye degradation under UV irradiation. The dye removal efficiency of nanoparticles was 96% after 35 min of UV ( λ  = 617 nm) irradiation. The ZnO nanoparticles were subjected to antimicrobial activity against different strains. The current synthetic work pledges to provide some new visions into the design of nanomaterial for multifunctional long-term applications for cleanup and biomedical applications.