Journal
OPTICS AND LASER TECHNOLOGY
Volume 111, Issue -, Pages 89-94Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2018.09.039
Keywords
Tantalum pentoxide nanoparticle; Pulsed laser ablation; Antibacterial
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Funding
- Research Council of Payame Noor University (PNU) of Tehran
- Plasma Physics Research Center, Science and Research Branch, Islamic Azad University
- Iran Nanotechnology Initiative Council
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In this paper using pulsed laser ablation method in liquid, the Ta2O5 nanoparticles were synthesized and the experimental results are investigated. For this purpose using pulsed laser ablation of a Ta metal plate, the Ta2O5 nanoparticles were synthesized (with similar to 5-20 nm sizes) in deionized water which the beam of a Q-switched Nd:YAG laser is employed to irradiate the tantalum target in water. Synthesized nanoparticles have been characterized by X-ray diffraction, field emission scanning electron microscopy, Fourier transform infrared spectroscopy and transmission electron microscopy. The optical properties of the nanoparticle solution were examined at room temperature by a UV-Vis absorption spectrophotometer. The results show that the high purity Ta2O5 nanoparticles were found to be orthorhombic crystalline structure with spherical structure by average diameters of about 5-20 nm and band gap of similar to 3.9-4.0 eV. The antibacterial effects of Ta2O5 nanoparticles against Escherichia coli bacteria were also examined that shows an excellent antibacterial performance.
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