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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(08) [August 2011] >
| Title: | Synthesis, crystal structure and characterization of Na2.02Ag5.98[GaSiO4]6(NO2)2 and Na3.12K4.88[GaSiO4]6(NO2)2 sodalites |
| Authors: | Borhade, A V
Wakchaure, S G |
| Keywords: | Gallosilicate
Nitrite derivatives
Reitveld refinement
UV-DRS |
| Issue Date: | Aug-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Partially exchanged silver and potassium derivatives of Na8[GaSiO4]6(NO2)2 sodalite,
Na2.02Ag5.98[GaSiO4]6(NO2)2
and Na3.12K4.88[GaSiO4]6(NO2)2,
have been studied. The nitrite sodalite of the composition, Na8[GaSiO4]6(NO2)2
was prepared at low temperature by hydrothermal technique and the
derivatives Na2.02Ag5.98[GaSiO4]6(NO2)2
and Na3.12K4.88[GaSiO4]6(NO2)2,
were obtained by cation exchange method at 373 K. These products
crystallize with the cubic sodalite structure in the space group P43n and
profile refinement of powder X-ray data has been completed. The products obtained
were studied by different investigative techniques like IR spectroscopy, X-ray
powder diffraction, UV-DRS and SEM. FTIR study shows shift in absorption
frequency for the exchange of silver and potassium derivatives. The unit cell
parameters (a) are found to be 8.9328, 8.9838 and 9.0409 Å for silver,
sodium and potassium sodalites, respectively, while the bond distances and bond
angles are modified considerably. UV-DRS study shows shift in bands and change
in band gap energy of these sodalite derivatives. SEM shows surface morphology
of these sodalites. |
| Page(s): | 563-567 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(08) [August 2011]
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