期刊
RUSSIAN PHYSICS JOURNAL
卷 58, 期 11, 页码 1598-1604出版社
SPRINGER
DOI: 10.1007/s11182-016-0689-8
关键词
pulsed laser ablation; cerium dioxide; nanoparticles; absorption spectra; X-ray diffraction analysis
资金
- Russian Ministry of Education and Science [2014/223, 1347]
The method of pulsed laser ablation in liquid was used to synthesize dispersions of cerium oxide nanoparticles when subjecting a metallic cerium target in water and alcohol to basic frequency radiation of the nanosecond Nd:YAG laser (1064 nm, 7 ns, 20 Hz). Researchers have studied the effect of laser radiation parameters, duration of impact, and optical scheme of experiment on the ablation process. The average rate of nanoparticle production was 50 mg/h in water and 25 mg/h in alcohol. Researchers have studied the size characteristics and crystalline structure of the nanoparticles produced. The particles have bimodal size distribution with 6 nm and 25 nm maximums. The average crystallite size is 17-19 nm. The crystalline structure of nanoparticles, namely cubic cerium oxide (fluorite structure), space group Fm-3m, is confirmed by the X-ray diffraction data, as well as optical absorption spectra and Raman spectroscopy.
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