Investigation on the effect of various fuels on the synthesis of strontium oxide nanoparticles

The solution combustion synthesis (SCS) method has been used to prepare strontium oxide [SrO2] nanoparticles using strontium nitrate [Sr (NO3)2] as an oxidizer. In order to study the effects of different fuels on the synthesis of SrO2 nanoparticles, different fuels like urea [CH4N2O], citric acid [C6H8O7] and glycine [C2H5NO2] were used. The synthesized nanoparticles were subjected to various characterization techniques such as X-Ray Diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy and UV Visible (UV-Vis) spectroscopy for analysing the structural and optical properties of synthesized samples. The XRD result confirms that the samples are crystalline in nature and the crystallite sizes were found to be 41.90 nm, 47.37 nm and 44.30 nm for CH4N2O, C2H5NO2 and C6H8O7 based SrO2 respectively. The FTIR results shows that there is bending and stretching of bonds because of H-O-H, −OH, and C=O groups. The bandgap (Eg) of the synthesized samples was calculated using UV-Visible spectra and are found to be 5.21 eV, 5.97 eV and 5.89 eV for SrO2 synthesized using CH4N2O, C2H5NO2 and C6H8O7 respectively. The results show that the SrO2 using C2H5NO2 has more bandgap and SrO2 synthesized using C2H5NO2 has more crystallite size.