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Synthesis and Fluorescence Properties of Europium-Substituted Lanthanum Orthophosphate and Condensed Phosphates

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DOI: 10.4236/ampc.2012.21008    5,086 Downloads   9,119 Views   Citations


Mixtures of lanthanum oxide, europium oxide, and phosphoric acid were heated with various ratios of P/(La + Eu) and Eu/(La + Eu). The obtained phosphates were estimated using XRD patterns, FT-IR spectra, and SEM images. The fluo-rescence spectra and resistance against hydrofluoric acid were estimated as functional properties of these phosphate materials. The condensed phosphates showed a strong peak at 615 nm and high resistance against hydrofluoric acid.

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H. Onoda and T. Funamoto, "Synthesis and Fluorescence Properties of Europium-Substituted Lanthanum Orthophosphate and Condensed Phosphates," Advances in Materials Physics and Chemistry, Vol. 2 No. 1, 2012, pp. 50-54. doi: 10.4236/ampc.2012.21008.


[1] M. T. Averbuch-Pouchat and A. Durif, “Topics in Phosphate Chemistry,” World Scientific Publishing Co. Pte. Ltd., Singapore, 1996.
[2] I. Hammas, K. Horchani-Naifer and M. Ferid, “Conduction properties of Condensed Lanthanum Phosphates: La(PO3)3 and LaP5O14,” Journal of Rare Earths, Vol. 28, No. 3, 2010, pp. 321-328. doi:10.1016/S1002-0721(09)60106-X
[3] S. Raynaud, E. Champion, D. Bernache-Assollant and P. Thomas, “Calcium Phosphate Apatites with Variable Ca/P Atomic Ratio I. Synthesis, Characterization and Thermal Stability of Powders”, Biomaterials, Vol. 23, No. 4, 2002, pp. 1065-1072. doi:10.1016/S0142-9612(01)00218-6
[4] B. Boonchom, C. Danvirutai and S. Maensiri, “Soft Solution Synthesis, Non-Isothermal Decomposition Kinetics and Characterization of Manganese Dihydrogen Phosphate Dihydrate Mn(H2PO4)2?2H2O and Its Thermal Transformation Products,” Materials Chemistry and Physics, Vol. 109, No. 2-3, 2008, pp. 404-410. doi:10.1016/j.matchemphys.2007.12.018
[5] S. V. Rathan, G. Govindaraj, “Thermal and Electrical Relaxation Studies in Li(4+x)TixNb1?xP3O12 (0.0 ≤x ≤1.0) Phosphate Glasses,” Solid State Sciences, Vol. 12, No. 5, 2010, pp. 730-735.
[6] P. Shuetz and F. Caruso, “Electrostatically Assembled Fluorescent Thin Films of Rare-Earth-Doped Lanthanum Phosphate Nanoparticles,” Chemistry of Materials, Vol. 14, No. 11, 2002, pp. 4509-4516. doi:10.1021/cm0212257
[7] F. Meiser, C. Cortez and F. Caruso, “Biofunctionalization of Fluorescent Rare-Earth-Doped Lanthanum Phosphate Colloidal Nanoparticles,” Angewandte Chemie, Vol. 43, No. 44, 2004, pp. 5954-5957. doi:10.1002/anie.200460856
[8] H. Onoda, H. Nariai, A. Moriwaki, H. Maki and I. Motooka, “Formation and Catalytic Characterization of Various Rare Earth Phosphates,” Journal of Materials Chemistry, Vol. 12, No. 6, 2002, pp. 1754-1760. doi:10.1039/b110121h
[9] H. Onoda, T. Ohta, J. Tamaki and K. Kojima, “Decomposition of Trifluoromethane over Nickel Pyrophosphate Catalysts Containing Metal Cation,” Applied Catalysis A, Vol. 288, No. 1-2, 2005, pp. 98-103. doi:10.1016/j.apcata.2005.04.028
[10] H. Onoda, Y. Inagaki, A. Kuwabara, N. Kitamura, K. Ame-zawa, A. Nakahira and I. Tanaka, “Synthesis and Electric Conductivity of Bulk Tetra-Valent Cerium Pyrophosphate,” Journal of Ceramic Processing Research, Vol. 11, No. 3, 2010, pp. 344-347.
[11] K. Rajesh, P. Shajesh, O. Seidei, P. Mukundan and K. G. K. Warrier, “A Facile Sol-Gel Strategy for the Synthesis of Rod-Shaped Nanocrystalline High-Surface-Area Lanthanum Phosphate Powders and Nanocoatings,” Advanced Functional Materials, Vol. 17, No. 10, 2007, pp. 1682- 1690. doi:10.1002/adfm.200600794
[12] H. Onoda, K. Taniguchi and I. Tanaka, “Additional Effects of Urea on Preparation and Acidic Properties of Lan- thanum Orthophosphate,” Microporous and Mesoporous Materials, Vol. 109, No. 1-3, 2008, pp. 193-198. doi:10.1016/j.micromeso.2007.04.043
[13] H. Onoda, H. Matsui and I. Tanaka, “Improvement of Acid and Base Resistance of Nickel Phosphate Pigment by the Addition of Lanthanum Cation,” Materials Science and Engineering B, Vol. 141, No. 1-2, 2007, pp. 28-33. doi:10.1016/j.mseb.2007.05.009
[14] M. Bettinelli, F. Piccinelli, A. Speghini, J. Ueda and S. Tanabe, “Excited State Dynamics and Energy Transfer Rates in Sr3Tb0.90Eu0.10(PO4)3,” Journal of Luminescence, Vol. 132, No. 1, 2012, pp. 27-29. doi:10.1016/j.jlumin.2011.07.018
[15] A. Tor, “Removal of Fluoride from Water Using Anion- Exchange Membrane under Donnan Dialysis Condition,” Journal of Hazardrous Materials, Vol. 141, No. 3, 2007, pp. 814-818. doi:10.1016/j.jhazmat.2006.07.043
[16] C. M. Lew, Y. Liu, B. Day, G. M. Kloster, H. Tiznado, M. Sun, F. Zaera, J. Wang and Y. Yan, “Hydrofluoric-Acid-Resistant and Hydrophobic Pure-Silica-Zeolite MEL Low-Dielectric-Constant Films,” Langmuir, Vol. 25, No. 9, 2009, pp. 5039-5044. doi:10.1021/la803956w
[17] D. E. C. Corbridge and E. J. Lowe, “The InfraRed Spectra of Inorganic Phosphorus Compounds. Part II. Some Salts of Phosphorus Oxy-Acids,” Journal of the Chemical Society, Vol. 493, 1954, pp. 4555-4564. doi:10.1039/jr9540004555
[18] E. Hemmer, K. Soga, T. Konishi, T. Watanabe, T. Tani-guchi and S. Mathur, “Influence of the Host Phase on the Vibrational Spectra of Europium-Doped Zirconia Prepared by Hydrothermal Processing,” Journal of the American Ceramic Society, Vol. 93, No. 11, 2010, pp. 3873- 3879. doi:10.1111/j.1551-2916.2010.03981.x

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