1. Fabrication of Ta nanoparticles induced by nanosecond laser ablation in ethanol: the study of laser fluence effects
- Author
-
Fariba Azadi Kenari, Davoud Dorranian, Mahmood Ghoranneviss, Samira Moniri, and Mohammad Reza Hantehzadeh
- Subjects
Laser ablation ,Materials science ,Photoluminescence ,Absorption spectroscopy ,Exciton ,Analytical chemistry ,Nanoparticle ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Laser ,01 natural sciences ,Fluence ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,law.invention ,law ,Transmission electron microscopy ,0210 nano-technology - Abstract
Tantalum nanoparticles (Ta NPs) were synthesized in ethanol solution by ablation with a 1064 nm Nd:YAG laser. Prepared NPs were investigated by UV-visible absorption spectroscopy, Transmission electron microscopy, X-ray diffraction and Photoluminescence measurement. The average sizes of NPs were calculated to be in the range of 12–18 nm. From the UV-visible studies, the plasmon peak position of Ta NPs was observed in the spectral range of 206–208 nm. The XRD spectra clearly showed the crystalline structure of NPs and various peaks of Ta and Ta2O5. Moreover, the UV region in the PL spectrum included the free exciton and the bound exciton emission correlated with the defect concentration. In fact, the laser ablation in the organic and inorganic solvents is a strong technique to obtain some NPs with particular structures, which are impossible to produce by conventional methods.
- Published
- 2017