Photoinduced high thermoelectric power factor in strontium titanate

Kumar, Naveen; Bera, Chandan

doi:10.1016/j.physb.2021.413552

Cited by 2 publications

(1 citation statement)

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“…STO has been a wellknown photocatalyst to study because it is non-toxic, relatively low cost, and has high photo-corrosion resistance, chemical stability [8], and structural stability [9]. However, the wide bandgap of STO (3.0-3.2 eV) [10]has restricted its usage only under UV rays irradiation [11,12]. Nevertheless, it is stated in [13] that the insertion of foreign materials or doping into STO structure could overcome this matter, improving the photocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nickel (Ni) doped SrTiO₃ and effects of sintering temperatures on its properties as photocatalyst

Agustina

Suherman

Hasanah

et al. 2023

J. Phys.: Conf. Ser.

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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.

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