Enhanced photocatalytic and antibacterial activity of Cu:SnO2 nanoparticles synthesized by microwave assisted method
| Autor: | M. Sathishkumar, S. Geethalakshmi |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Tin dioxide Doping Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences chemistry.chemical_compound Tetragonal crystal system chemistry Rutile 0103 physical sciences Rhodamine B Photocatalysis Ultraviolet light 0210 nano-technology Nuclear chemistry |
| Zdroj: | Materials Today: Proceedings. 20:54-63 |
| ISSN: | 2214-7853 |
| Popis: | In the present work, enhanced antibacterial and photocatalytic activity of pure and Copper (Cu) doped tin dioxide (SnO2) nanoparticles via microwave assisted method was studied. The effect of Cu doping concentration (Sn1−x Cux O2) (x = 0, 0.03, 0.06 and 0.09) on the structural, morphological, optical and elemental analysis of synthesized SnO2 nanoparticles was analyzed by variety of analytical techniques. The structural studies exhibited tetragonal rutile phase and average crystal size was found to be 29 nm for pure SnO2 nanoparticles and was decreased to 21 nm for Cu:SnO2 (9 wt%). XRD analysis showed increasing the Cu doping concentration decreased the crystal size. Further, from TEM studies, it was found that SnO2 nanoparticles had tetragonal like structure and Cu:SnO2 nanoparticles had spherical structure. Optical properties were investigated by UV visible and Photoluminescence spectroscopy and the band gap energy value has been found to be 3.54 eV for pure SnO2 nanoparticle and it was decreased to 3.20 eV for Cu doped SnO2 nanoparticles. It was also found that the band gap energy was decreased by increasing Cu doping concentration. The antibacterial activity of prepared samples was evaluated by disc diffusion method against P. aeruginosa and S. aureus microorganisms. The results showed Cu doped SnO2 nanoparticles had excellent zone of inhibition against both microorganisms. Besides, the photocatalytic degradation properties of prepared samples were evaluated for methylene blue and rhodamine B aqueous solution dye under ultraviolet light. Excellent dye degradation was found for Cu:SnO2 (9 wt%) than the pure SnO2 nanoparticles for both dyes. |
| Databáze: | OpenAIRE |
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