Growth and characterization of potassium cobalt nickel sulfate hexahydrate crystals: A new UV light filter
| Autor: | Michelle de Oliveira, Ananias A. Barbosa, Santunu Ghosh, Carlos J. Franco, Genivaldo Julio Perpétuo, Tiago S. Pacheco |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Characterization Materials Science (miscellaneous) Potassium Evaporation Analytical chemistry chemistry.chemical_element Crystal growth 02 engineering and technology 01 natural sciences Ion Biomaterials Tutton's salt symbols.namesake 0103 physical sciences lcsh:TA401-492 Molecule 010302 applied physics 021001 nanoscience & nanotechnology Electronic Optical and Magnetic Materials Crystallography chemistry Molecular vibration Raman spectroscopy Ceramics and Composites symbols lcsh:Materials of engineering and construction. Mechanics of materials Optical transmission spectra 0210 nano-technology |
| Zdroj: | Journal of Science: Advanced Materials and Devices, Vol 2, Iss 3, Pp 354-359 (2017) |
| ISSN: | 2468-2179 |
| DOI: | 10.1016/j.jsamd.2017.08.002 |
| Popis: | Samples of the empirical formula K 2 + N i x 2 + C o 1 − x 2 + S O 4 2 ⋅ 6 H 2 O were grown with a partial occupation of the cations Co and Ni. Mixed crystals with good optical quality were obtained by the slow evaporation growth method. In the decomposition process, these crystals suffer a mass loss of approximately 24%, equivalent to water molecules forming octahedral coordination ions of Ni and Co. The optical characteristics of the grown crystals were measured where transmittance reached more than 80% in the wavelength range of 190–390 nm. By Raman spectroscopy, the vibrational modes of SO 4 2 − , H2O and of the octahedral Ni(H2O)6 and Co(H2O)6 were identified. |
| Databáze: | OpenAIRE |
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