SrTi0.97 Ni0.03O3 photocatalysts with varied sintering temperatures of 900°C and 1000°C have been successfully prepared via the co-precipitation method. This study aimed to determine the effect of temperature on SrTi0.97 Ni0.03O3 photocatalyst including the microstructure, atomic bonding, and photocatalyst activity. X-Ray Diffraction (XRD) data revealed an increase in the crystallite size with increasing the sintering temperature. Fourier Transform Infrared (FTIR) results confirmed the formation of Sr-Ti-O bonds followed by the presence of CH impurities that the impurities decreased at 1000°C. The photocatalyst activity was tested using methylene blue (MB) degradation in SrTi0.97 Ni0.03O3 photocatalysts under UV rays. The time for the irradiation process varied from 3, 4, to 5 hours. The degraded result was examined using a UV-Vis spectrophotometer to estimate the %degradation. The results demonstrated that the sintering temperatures do not considerably impact MB degradation. Further, the best treatment for SrTi0.97Ni0.03O3 to attain the highest MB degradation of 49.9% is at 900°C with 5 hours of irradiation.

Strontium Titanate is a perovskite oxide with remarkable properties as a photocatalyst. The synthesis of Strontium Titanate material with Neodymium doping (Sr0.97Nd0.03TiO3) has been completed by means of the co-precipitation procedure. Samples were sintered at temperatures of 900°C and 1000°C for 4 hours to investigate their properties. X-Ray Diffraction (XRD), Fourier-Transform Infrared spectroscopy (FTIR), and UV-Vis Spectrophotometer were employed to observe the microstructure, chemical bonds, and photocatalyst activity of Sr0.97Nd0.03TiO3. XRD data exhibited that the crystal size enlarged from 42.3 nm and 64.4 nm as the sintering temperature increased. FTIR data revealed strong Sr-Ti-O bonds and decreased C-H and C=H bond impurities as the sintering temperature increased. The photocatalytic performance was evaluated with methylene blue (MB) dye degradation by UV light irradiation for 3, 4, and 5 hours where the UV-Vis spectrophotometer tested the absorbance of the degraded MB. The results exhibited that Sr0.97Nd0.03TiO3 achieved the optimal degradation (62.7%) at 900°C and with 3 hours of irradiation.

Barium Titanate or BaTiO3, a ferroelectric material with good dielectric properties, is widely studied. The performance of BT is influenced by synthesis and doping. Here, Barium Titanate has been doped with Manganese via the co-precipitation procedure sintered at 900°C and 1000°C. The purposes of this study were to examine the microstructure and dielectric constant of BaMn0.05Ti0.95O3 with variation sintering temperatures at 900°C and 1000°C. The testing employed X-Ray Diffraction (XRD), Fourier Transform Infrared (FTIR), and Resistance Capacitance Inductance (LCR Meter). The XRD data exposed that the crystal size of the BaMn0.05Ti0.9503 sample enlarged from 48.27 nm to 72.41 nm with increasing sintering temperature. The analysis results using FTIR exhibited the existence of Ba-O and Ti-O bonds which confirmed the perovskite structure of BaTiO3. FTIR data also indicated the presence of C-H atomic bonds, which is the peak of impurities in the carbonate phase. The C-H bond vibration decreased at the higher sintering temperature. The dielectric constant value was obtained from the measurements using an LCR meter. In conclusion, increasing the sintering temperature improved the dielectric constant of BaMn0.05Ti0.95O3 from 119 to 386.