Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO3 nanopowder synthesized by sol-gel auto combustion technique
Metal oxide photocatalyst is a promising wastewater treatment process due to its simplicity, high efficiency, and low cost, as well as being environmentally friendly and non-energy consuming. The perovskite structure material, SrTi1−xNbxO3 (STNO) with x = 0, 0.01, 0.03, and 0.05, was successfully sy...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-07-01
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| Series: | Journal of Asian Ceramic Societies |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21870764.2022.2094556 |
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| author | Pornnipa Nunocha Malinee Kaewpanha Theerachai Bongkarn Apiluck Eiad-Ua Tawat Suriwong |
| author_facet | Pornnipa Nunocha Malinee Kaewpanha Theerachai Bongkarn Apiluck Eiad-Ua Tawat Suriwong |
| author_sort | Pornnipa Nunocha |
| collection | DOAJ |
| description | Metal oxide photocatalyst is a promising wastewater treatment process due to its simplicity, high efficiency, and low cost, as well as being environmentally friendly and non-energy consuming. The perovskite structure material, SrTi1−xNbxO3 (STNO) with x = 0, 0.01, 0.03, and 0.05, was successfully synthesized by the sol-gel auto-combustion method. Samples with a pure phase and cubic perovskite structure were obtained. The Rietveld refinement results showed that the lattice parameter and unit cell density increased as the Nb-doping level increased. The particle size of the STNO decreases with increasing Nb doping content. Photoluminescence was excited at 327 nm, producing violet, green, and blue emissions, while the Nb content asserts an insignificant effect on the bandgap (Eg). The Nyquist plot and Mott-Schottky analysis were used to determine the photoelectrode performance of the STNO samples. The photocatalytic activity of STNO on the decolorization of methylene blue (MB) under UV irradiation increased with increasing Nb content and optimization at x = 0.05, corresponding to the results obtained from photoluminescence, Eg, Nyquist plot, and Mott-Schottky analyses. |
| first_indexed | 2024-04-13T20:07:13Z |
| format | Article |
| id | doaj.art-9a28135a69494bafa6075141b31b47e8 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-04-13T20:07:13Z |
| publishDate | 2022-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-9a28135a69494bafa6075141b31b47e82022-12-22T02:31:57ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642022-07-0110358359610.1080/21870764.2022.2094556Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO3 nanopowder synthesized by sol-gel auto combustion techniquePornnipa Nunocha0Malinee Kaewpanha1Theerachai Bongkarn2Apiluck Eiad-Ua3Tawat Suriwong4School of Renewable Energy and Smart Grid Technology, Naresuan University, Phitsanulok, ThailandSchool of Renewable Energy and Smart Grid Technology, Naresuan University, Phitsanulok, ThailandFaculty of Science, Department of Physics, Naresuan University, Phitsanulok, ThailandCollege of Nanotechnology, King Mongkut’s Institute of Technology, Bangkok, ThailandSchool of Renewable Energy and Smart Grid Technology, Naresuan University, Phitsanulok, ThailandMetal oxide photocatalyst is a promising wastewater treatment process due to its simplicity, high efficiency, and low cost, as well as being environmentally friendly and non-energy consuming. The perovskite structure material, SrTi1−xNbxO3 (STNO) with x = 0, 0.01, 0.03, and 0.05, was successfully synthesized by the sol-gel auto-combustion method. Samples with a pure phase and cubic perovskite structure were obtained. The Rietveld refinement results showed that the lattice parameter and unit cell density increased as the Nb-doping level increased. The particle size of the STNO decreases with increasing Nb doping content. Photoluminescence was excited at 327 nm, producing violet, green, and blue emissions, while the Nb content asserts an insignificant effect on the bandgap (Eg). The Nyquist plot and Mott-Schottky analysis were used to determine the photoelectrode performance of the STNO samples. The photocatalytic activity of STNO on the decolorization of methylene blue (MB) under UV irradiation increased with increasing Nb content and optimization at x = 0.05, corresponding to the results obtained from photoluminescence, Eg, Nyquist plot, and Mott-Schottky analyses.https://www.tandfonline.com/doi/10.1080/21870764.2022.2094556Nb-doped SrTiO3perovskitedecolorizationenergy bandNyquist plotMott-Schottky plot |
| spellingShingle | Pornnipa Nunocha Malinee Kaewpanha Theerachai Bongkarn Apiluck Eiad-Ua Tawat Suriwong Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO3 nanopowder synthesized by sol-gel auto combustion technique Journal of Asian Ceramic Societies Nb-doped SrTiO3 perovskite decolorization energy band Nyquist plot Mott-Schottky plot |
| title | Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO3 nanopowder synthesized by sol-gel auto combustion technique |
| title_full | Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO3 nanopowder synthesized by sol-gel auto combustion technique |
| title_fullStr | Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO3 nanopowder synthesized by sol-gel auto combustion technique |
| title_full_unstemmed | Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO3 nanopowder synthesized by sol-gel auto combustion technique |
| title_short | Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO3 nanopowder synthesized by sol-gel auto combustion technique |
| title_sort | effect of nb doping on the structural optical and photocatalytic properties of srtio3 nanopowder synthesized by sol gel auto combustion technique |
| topic | Nb-doped SrTiO3 perovskite decolorization energy band Nyquist plot Mott-Schottky plot |
| url | https://www.tandfonline.com/doi/10.1080/21870764.2022.2094556 |
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