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Investigators at Amirkabir University of Technology Detail Findings in Nanoparticles

February 11, 2014



By a News Reporter-Staff News Editor at Journal of Technology -- Current study results on Nanoparticles have been published. According to news reporting out of Tehran, Iran, by VerticalNews editors, research stated, "The most effective process parameters were determined to synthesize spherical LaF3 nanoparticles with controllable size based on ethylenediaminetetraacetic acid (EDTA) via co-precipitation technique."

Our news journalists obtained a quote from the research from the Amirkabir University of Technology, "Thermogravimetricdifferential thermal analysis, X-ray diffraction, scanning electron microscopy, dynamic light scattering and FT-IR spectroscopy were used to characterize the resulting powders. Detailed investigations revealed that the optimal LaF3 host nano-material was obtained when NH4F was used as a fluoride source in the presence of EDTA at pH = 5. Furthermore, photoluminescence spectra showed an intense double emission peak at 289 and 302 nm for cerium-doped LaF3 nanocrystals excited at 253 nm, which was assigned to the well-known 5d ? 4f (F-2(5/2) and F-2(7/2)) transitions of Ce3+ levels due to luminescence center mechanism."

According to the news editors, the research concluded: "The experimental results indicate that the synthesized LaF3:0.05Ce powders with a band gap of 5.3 eV are promising phosphors for high density scintillators."

For more information on this research see: Ce3+-doped LaF3 nanoparticles: Wet-chemical synthesis and photo-physical characteristics "optical properties of LaF3:Ce nanomaterials." Metals and Materials International, 2014;20(1):169-176. Metals and Materials International can be contacted at: Korean Inst Metals Materials, Kim Bldg 6TH Floor, Seocho-Daero 56 Gil 38, Seocho-Gu, Seoul 137-881, South Korea. (Springer - www.springer.com; Metals and Materials International - www.springerlink.com/content/1598-9623/)

Our news journalists report that additional information may be obtained by contacting F. Tabatabaee, Amirkabir Univ Technol, CPRC, Tehran, Iran. Additional authors for this research include A.A.S. Alvani, H. Sameie, S. Moosakhani, R. Salimi and M. Taherian.

Keywords for this news article include: Tehran, Iran, Asia, Emerging Technologies, Nanomaterial, Nanoparticle, Nanoparticles, Nanotechnology

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Source: Journal of Technology


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