analysis. The effective mass approximation is used to find out the
particle size in case of fluorescence spectroscopy. The confirmation
is done through TEM.
2. Experimental
The AR grade (SD Fine, India) chemicals were used in this work.
The SrO QD was arrested by one pot chemical route approach. The
reaction is shown below.
SrðNO3Þ2 þ C6H12N4 ! SrO þ C6N6 þ 6H2O
The 1 M HMT was dissolved in 5 ml double distilled water separately.
After rigorous stirring, 1 M strontium nitrate was added in
the solution. The HMT is used as a nitrate remover (precursor remover).
The reaction was stood for 2 h at room temperature. The
precipitate so obtained was vacuum filtered and filtrate was first
dried at room temperature for 24 h and sintered at 100 C for
3 h. The SrO QDs prepared in this way were characterized by
UV–VIS analysis on a Perkin Elmer Spectrophotometer. The TEM
analysis is used to know the particle size of SrO QDs. The fluorescence
analysis was done on a FL Spectrophotometer (Model: HITACHI,
F-7000). The slit width was adjusted to 5 nm. The sample
for TEM analysis was prepared by carbon-coated copper TEM grids.
The measurements were performed on a JEOL Model 1200EX
instrument operated at an accelerating voltage of 120 kV.