Growth and vibrational spectroscopy of K2LiyNixCo1-x(SO4)2• 6H2O (y=0. 1; 0. 2; 0. 3; 0. 4) crystals

被引：11
|
作者：
Pacheco, Tiago S. [1 ,2 ,4 ]
Ludwig, Zelia M. C. [1 ]
Sant'Anna, Diogo R. [1 ]
Perpetuo, Genivaldo J. [4 ]
Franco, Carlos J. [4 ]
Paiva, Edinei C. [2 ,3 ]
Ghosh, Santunu [5 ]
机构：
[1] Fed Univ Juiz de Fora UFJF, Dept Phys, BR-36036330 Juiz De Fora, MG, Brazil
[2] Fed Inst North Minas Gerais IFNMG, Campus Januaria, BR-39480000 Januaria, MG, Brazil
[3] Nucl Technol Dev Ctr CDTN, BR-31270901 Belo Horizonte, MG, Brazil
[4] Fed Univ Ouro Preto UFOP, Dept Phys, BR-35400000 Ouro Preto, MG, Brazil
[5] Fed Univ Minas Gerais UFMG, Dept Phys, BR-31270901 Belo Horizonte, MG, Brazil
来源：
VIBRATIONAL SPECTROSCOPY | 2020年 / 109卷
关键词：
Crystal growth; Tutton's Salt; Chemical Analysis; Raman Spectroscopy; Optical Energy Gap; NICKEL SULFATE HEXAHYDRATE; THERMAL-ANALYSIS; TUTTONS SALT; SPECTRA; CO; LUMINESCENCE; SERIES; MG;
D O I：
10.1016/j.vibspec.2020.103093
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The mixed crystals of the Tutton's salt doped with Li following the empirical formula K2LiyNixCo1-x(SO4)(2)center dot 6H(2)O, were synthesized from the slow evaporation of the solvent at constant temperature. The presence of K, S, Ni, Co and O elements in the studied crystalline structure was confirmed by EDS spectroscopy using a scanning electron microscope and their quantification including Li was carried out with the help of ICP-OES technique. Raman spectroscopy in the range 100-3600 cm(-1), confirmed the presence of tetrahedral (SO4), octahedral complexes Ni(H2O)(6), Co(H2O)(6), and H2O molecules in the crystal structure. Our UV-vis studies have shown that the mixed crystals have good optical transparency in the ultraviolet (200-350 nm) and infrared (750-1000 nm) region. The direct and indirect optical energy gap of the synthesized crystals were determined from the Tauc's plot. XRD diffractograms of the sample crystals do not show any specific changes due to the presence of Li ion in the crystalline network.
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页数：8
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