Photocatalysts Comparison of Low Mn-Doped SrTiO₃ (SrTi_1-xMn_xO₃; x=1% and 3%)

Abstract:

SrTiO_3, or STO, is an intriguing candidate and has been extensively studied for photocatalytic degradation because of its outstanding features. This study purposed to compare and determine the effects of low Mn doping (x= 1% and 3%) on the phase, structural property, and photocatalytic activity of Mn-doped STO (SrTi_1-xMn_xO₃) as a photocatalyst for degrading MB dye. The synthesis performed the co-precipitation method with a sintering temperature of 1000°C for 4 h holding time. The phase and structural properties of the powder samples were characterized using X-Ray Diffraction (XRD) and Fourier Transform Infra-Red (FTIR) instruments. The XRD and FTIR data validated that all Mn-doped STO samples had been successfully fabricated. The photocatalytic activity of STO:Mn 1% and STO:Mn 3% was confirmed by Methylene Blue (MB) dye degradation under UV light. It revealed that the STO:Mn 1% showed better photocatalytic activity than STO:Mn 3%, with the highest degradation percentage of 58.01% at 6 h irradiation.

• Periodical: Materials Science Forum (Volume 1111)
• Pages: 129-134
• DOI: https://doi.org/10.4028/p-0d6DFp
• Online since: December 2023
• Authors: Yofentina Iriani*, Rindhi Afriani, Dianisa Khoirum Sandi, Fahru Nurosyid
• Keywords: Degradation, Light Doping, Manganese (Mn), Methylene Blue, Photocatalyst, Strontium Titanate (STO)

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