Effect of Bismuth on the Structure, Magnetic and Photocatalytic Characteristics of GdFeO<sub>3</sub>
In this paper, a series of Gd<sub>1-x</sub>Bi<sub>x</sub>FeO<sub>3</sub> (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1) nanoparticles have been readily synthesized by a green and facile sol–gel method. It gradually changed from the orthorhombic structure (space group <i&g...
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MDPI AG
2023-01-01
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| Series: | Magnetochemistry |
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| Online Access: | https://www.mdpi.com/2312-7481/9/2/45 |
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| author | Yudie Ma Hui Shen Yating Fang Heyan Geng Yu Zhao Yasheng Li Jiayue Xu Yunfeng Ma |
| author_facet | Yudie Ma Hui Shen Yating Fang Heyan Geng Yu Zhao Yasheng Li Jiayue Xu Yunfeng Ma |
| author_sort | Yudie Ma |
| collection | DOAJ |
| description | In this paper, a series of Gd<sub>1-x</sub>Bi<sub>x</sub>FeO<sub>3</sub> (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1) nanoparticles have been readily synthesized by a green and facile sol–gel method. It gradually changed from the orthorhombic structure (space group <i>Pbnm</i>) to the rhombohedral perovskite structure (space group <i>R3c</i>). Weak ferromagnetic behavior was effectively induced by Bi<sup>3+</sup>, with reduced magnetization. It was closely related with the lattice distortion of the perovskite structure and modified interactions between Fe-O-Fe. Boosted photocatalytic activities of Gd<sub>1-x</sub>Bi<sub>x</sub>FeO<sub>3</sub> were observed for the removal of methylene blue (MB) under the visible light irradiation. In particular, Gd<sub>0.5</sub>Bi<sub>0.5</sub>FeO<sub>3</sub> showed the optimum photocatalytic efficiency, in which the degradation efficiency reached 82.1% after 180 min of visible light illumination, with good stability and repeatability. The improved performance was mainly ascribed to enhanced visible light absorption, decreased optical band gap from 2.21 to 1.8eV and stronger charge transfer efficiency. A possible photocatalytic mechanism is also proposed according to the band structure. The results indicate that this system will be a promising candidate for the degradation of organic pollutant as a novel magnetically recoverable photocatalyst. |
| first_indexed | 2024-03-11T08:31:41Z |
| format | Article |
| id | doaj.art-9c01f397395141a28bfc8ae7a2f1906c |
| institution | Directory Open Access Journal |
| issn | 2312-7481 |
| language | English |
| last_indexed | 2024-03-11T08:31:41Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Magnetochemistry |
| spelling | doaj.art-9c01f397395141a28bfc8ae7a2f1906c2023-11-16T21:47:01ZengMDPI AGMagnetochemistry2312-74812023-01-01924510.3390/magnetochemistry9020045Effect of Bismuth on the Structure, Magnetic and Photocatalytic Characteristics of GdFeO<sub>3</sub>Yudie Ma0Hui Shen1Yating Fang2Heyan Geng3Yu Zhao4Yasheng Li5Jiayue Xu6Yunfeng Ma7Institute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaInstitute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaInstitute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaInstitute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaInstitute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaInstitute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaInstitute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaInstitute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaIn this paper, a series of Gd<sub>1-x</sub>Bi<sub>x</sub>FeO<sub>3</sub> (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1) nanoparticles have been readily synthesized by a green and facile sol–gel method. It gradually changed from the orthorhombic structure (space group <i>Pbnm</i>) to the rhombohedral perovskite structure (space group <i>R3c</i>). Weak ferromagnetic behavior was effectively induced by Bi<sup>3+</sup>, with reduced magnetization. It was closely related with the lattice distortion of the perovskite structure and modified interactions between Fe-O-Fe. Boosted photocatalytic activities of Gd<sub>1-x</sub>Bi<sub>x</sub>FeO<sub>3</sub> were observed for the removal of methylene blue (MB) under the visible light irradiation. In particular, Gd<sub>0.5</sub>Bi<sub>0.5</sub>FeO<sub>3</sub> showed the optimum photocatalytic efficiency, in which the degradation efficiency reached 82.1% after 180 min of visible light illumination, with good stability and repeatability. The improved performance was mainly ascribed to enhanced visible light absorption, decreased optical band gap from 2.21 to 1.8eV and stronger charge transfer efficiency. A possible photocatalytic mechanism is also proposed according to the band structure. The results indicate that this system will be a promising candidate for the degradation of organic pollutant as a novel magnetically recoverable photocatalyst.https://www.mdpi.com/2312-7481/9/2/45perovskiteorthoferritessol–gelmagneticphotocatalysis |
| spellingShingle | Yudie Ma Hui Shen Yating Fang Heyan Geng Yu Zhao Yasheng Li Jiayue Xu Yunfeng Ma Effect of Bismuth on the Structure, Magnetic and Photocatalytic Characteristics of GdFeO<sub>3</sub> Magnetochemistry perovskite orthoferrites sol–gel magnetic photocatalysis |
| title | Effect of Bismuth on the Structure, Magnetic and Photocatalytic Characteristics of GdFeO<sub>3</sub> |
| title_full | Effect of Bismuth on the Structure, Magnetic and Photocatalytic Characteristics of GdFeO<sub>3</sub> |
| title_fullStr | Effect of Bismuth on the Structure, Magnetic and Photocatalytic Characteristics of GdFeO<sub>3</sub> |
| title_full_unstemmed | Effect of Bismuth on the Structure, Magnetic and Photocatalytic Characteristics of GdFeO<sub>3</sub> |
| title_short | Effect of Bismuth on the Structure, Magnetic and Photocatalytic Characteristics of GdFeO<sub>3</sub> |
| title_sort | effect of bismuth on the structure magnetic and photocatalytic characteristics of gdfeo sub 3 sub |
| topic | perovskite orthoferrites sol–gel magnetic photocatalysis |
| url | https://www.mdpi.com/2312-7481/9/2/45 |
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