| Popis: |
The synthesis conditions of novel double potassium-cadmium paratungstate BK 2 Cd 4 [W 12 O 40 (OH) 2 ]·28H 2 O from the aqueous solution of potassium tungstate acidified to Z=1.00 with a ratio v(Cd):v(W)=1:6 were elaborated. Using FTIR spectroscopy, it was shown that the anion contained in the isolated salt has the paratungstate B structure. Using Scanning Electron Microscopy, the surface morphology of isopoly compound was studied, and it was found out that the grain size is within the range of 20-45nm. The single-phase condition of the synthesized salt was confirmed by the surface uniform contrast in backscattered electron mode. |
