Thermal analysis and mechanism of α-Zn2SiO4:Mn2+ formation from zinc oxalate dihydrate under hydrothermal conditions

Synthesis, properties, and formation mechanism of Mn-doped Zn2SiO4nanowires and associated heterostructures

“…In fact, the hemimorphite species has been previously shown to serve as an intermediate in analogous hydrothermal syntheses, and can be produced when the temperature is at least 150 to 175 1C. 40 Most importantly, the formation of ZnO as a clear intermediate species during the hydrothermal synthesis of Zn 2 SiO 4 has been verified by multiple reports. 14,39,41 In effect, it has been shown that the growth rate of ZnO nanostructures depends upon the concentration of the base in solution.…”

Calculation of Vibrational Spectra and Thermodynamic Functions of a Natural Zinc Silicate – Willemite

“…The calculated force constants were used in calculating the vibrational states of the crystal lattice of willemite in the program LADY with valence force field model. As a fidelity criterion of the calculations an agreement between the calculated and experimental [5,[12][13][14][15][16][17][18] vibrational spectra of willemite was used, for this purpose a sequence variation of the force constants used in the calculation was performed. As a result a good agreement between the positions of the calculated lines in the theoretical spectrum and the absorption bands in the experimental infrared spectrum has been achieved (Table 2).…”

“…Experimental [5,[12][13][14][15][16][17][18] and calculated frequencies of IR and Raman spectra of willemite…”

“…Raman spectrum vibration type ν exp , cm -1 [5] ν exp , cm -1 [12] ν exp , cm -1 [13] ν exp , cm -1 [14] ν exp , cm -1 [15] ν exp , cm -1 [16] ν exp , cm -1 [17] ν calc , cm -1 (Todd, 1951) [20].…”