Synthesis and characterization of the copper doped Ca-La apatites
| Autor: | Andrei A. Eliseev, Martin Jansen, I.L. Kalachev, Robert E. Dinnebier, M.A. Pogosova, Pavel E. Kazin, Oxana V. Magdysyuk |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Diffuse reflectance infrared fourier transform Process Chemistry and Technology General Chemical Engineering Doping Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Copper Apatite 0104 chemical sciences Ion Crystallography symbols.namesake chemistry visual_art Lanthanum symbols visual_art.visual_art_medium Hydroxyapatites 0210 nano-technology Raman spectroscopy |
| Zdroj: | Dyes and Pigments. 133:109-113 |
| ISSN: | 0143-7208 |
| DOI: | 10.1016/j.dyepig.2016.05.044 |
| Popis: | Copper-containing Ca-La hydroxyapatites (HAPs) with chemical compositions Ca 10- x La x (PO 4 ) 6 O 2 H 1.5- x - y - δ Cu y ( x = 0–1.79; y = 0–0.57) were synthesized by solid state reaction. Structural parameters and atomic positions were refined using the Rietveld method in space group P 6 3 / m . It was found that La 3+ ions occupied the Ca(2) position only and copper ions were located mainly inside the hexagonal channel. In contrast to known red-violet copper-doped Ca-apatites, the copper-doped Ca-La apatites exhibited lighter colors varying from pink to pale yellow and blue-grey tints. Chromophores in the compounds were characterized by diffuse reflectance spectroscopy, colorimetry, and resonant Raman spectroscopy. |
| Databáze: | OpenAIRE |
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