SYNTHESIS OF SrTi1–(X+Y)MOXVYO3 AND ITS PHOTOCATALYTIC ACTIVITIES OF UNDER VISIBLE LIGHT IRRADIATION
Single–phase perovskite strontium titanate SrTiO3 was synthesized from strontium nitrate and tetra–n–butyl orthotitanate using sol–gel method with various calcined temperature from 600–900 °C. Prepared catalysts were characterized by X–ray diffraction (XRD), scanning electron microscope (SEM), ultra...
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| Main Authors: | , , |
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| Other Authors: | |
| Format: | Conference paper |
| Language: | English |
| Published: |
2019
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| Online Access: | http://repository.vnu.edu.vn/handle/VNU_123/67095 |
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| Institution: | Vietnam National University, Hanoi |
| Language: | English |
| Summary: | Single–phase perovskite strontium titanate SrTiO3 was synthesized from strontium nitrate and tetra–n–butyl orthotitanate using sol–gel method with various calcined temperature from 600–900 °C. Prepared catalysts were characterized by X–ray diffraction (XRD), scanning electron microscope (SEM), ultraviolet–visible diffuse reflection spectroscopy (UV–DRS). The result showed that SrTiO3, which was synthesized at 700 °C in 6 hours, possessed the efficiency of 59.9 % regarding photocatalytic activity for the 10 ppm methylene blue degradation under visible (λ = 390 ÷ 750 nm). Furthermore, the results indicated that the doping of M (M = Mo, V) into the structure SrTiO3(SrTi1-(x+y)MoxVyO3) increased the degradation efficiency in comparison with that of the undoped SrTiO3. As a result, the presence of Mo, V contributed to the decrease of band-gap energy and enhanced simultaneously the photocatalytic activity of
SrTiO3 |
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