Highly Effective Fe-Doped Nano Titanium Oxide for Removal of Acetamiprid and Atrazine under Simulated Sunlight Irradiation
Pesticides are widely detected in large quantities in the environment, posing an ecological threat to the human body and ecology. Semiconductor nanomaterials such as nano-titania (nTiO<sub>2</sub>) have strong photocatalytic degradation efficiency for pollutants. However, the wide bandga...
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| Format: | Article |
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MDPI AG
2024-02-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/14/3/461 |
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| author | Zhanpeng Liu Junjian Lin Zhimin Xu Fangfang Li Siyao Wang Peng Gao Guomei Xiong Hongbo Peng |
| author_facet | Zhanpeng Liu Junjian Lin Zhimin Xu Fangfang Li Siyao Wang Peng Gao Guomei Xiong Hongbo Peng |
| author_sort | Zhanpeng Liu |
| collection | DOAJ |
| description | Pesticides are widely detected in large quantities in the environment, posing an ecological threat to the human body and ecology. Semiconductor nanomaterials such as nano-titania (nTiO<sub>2</sub>) have strong photocatalytic degradation efficiency for pollutants. However, the wide bandgap and limited light absorption range inhibit nano-titania’s practical application. Therefore, nTiO<sub>2</sub> was modified by Fe<sup>3+</sup> doping using the microwave hydrothermal method to improve its photocatalytic performance in this study. Fe-nTiO<sub>2</sub> doped with a 1.0% mass ratio was used due to its high photocatalytic performance. Its maximum degradation efficiencies for ACE and ATZ under a 20 W xenon lamp were 88% and 88.5%, respectively. It was found that Fe<sup>3+</sup> doping modification distorted the spatial morphology of nTiO<sub>2</sub> and shortened the bandgap to facilitate the photocatalytic reaction. The electron paramagnetic resonance results showed that the reactive radicals (<sup>1</sup>O<sub>2</sub>, ·OH) produced by photogenerated electrons (e<sup>−</sup>) and holes (h<sup>+</sup>) of Fe-nTiO<sub>2</sub> were the main active species in the degradation of ACE and ATZ. Additionally, the application of Fe-nTiO<sub>2</sub> significantly enhanced the growth of lettuce under sunlight; the degradation efficiencies of ACE and ATZ in lettuce were 98.5% and 100%, respectively. This work provides new insights into the removal of organic contaminants by photocatalysts under sunlight in agriculture. |
| first_indexed | 2024-04-24T18:38:36Z |
| format | Article |
| id | doaj.art-33f6ac85ddad438e985051200f4f0378 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-04-24T18:38:36Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-33f6ac85ddad438e985051200f4f03782024-03-27T13:16:36ZengMDPI AGAgronomy2073-43952024-02-0114346110.3390/agronomy14030461Highly Effective Fe-Doped Nano Titanium Oxide for Removal of Acetamiprid and Atrazine under Simulated Sunlight IrradiationZhanpeng Liu0Junjian Lin1Zhimin Xu2Fangfang Li3Siyao Wang4Peng Gao5Guomei Xiong6Hongbo Peng7Faculty of Modern Agricultural Engineering, Kunming University of Science & Technology, Kunming 650500, ChinaFaculty of Modern Agricultural Engineering, Kunming University of Science & Technology, Kunming 650500, ChinaFaculty of Modern Agricultural Engineering, Kunming University of Science & Technology, Kunming 650500, ChinaYunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, ChinaFaculty of Modern Agricultural Engineering, Kunming University of Science & Technology, Kunming 650500, ChinaCity College, Kunming University of Science & Technology, Kunming 650051, ChinaFaculty of Modern Agricultural Engineering, Kunming University of Science & Technology, Kunming 650500, ChinaFaculty of Modern Agricultural Engineering, Kunming University of Science & Technology, Kunming 650500, ChinaPesticides are widely detected in large quantities in the environment, posing an ecological threat to the human body and ecology. Semiconductor nanomaterials such as nano-titania (nTiO<sub>2</sub>) have strong photocatalytic degradation efficiency for pollutants. However, the wide bandgap and limited light absorption range inhibit nano-titania’s practical application. Therefore, nTiO<sub>2</sub> was modified by Fe<sup>3+</sup> doping using the microwave hydrothermal method to improve its photocatalytic performance in this study. Fe-nTiO<sub>2</sub> doped with a 1.0% mass ratio was used due to its high photocatalytic performance. Its maximum degradation efficiencies for ACE and ATZ under a 20 W xenon lamp were 88% and 88.5%, respectively. It was found that Fe<sup>3+</sup> doping modification distorted the spatial morphology of nTiO<sub>2</sub> and shortened the bandgap to facilitate the photocatalytic reaction. The electron paramagnetic resonance results showed that the reactive radicals (<sup>1</sup>O<sub>2</sub>, ·OH) produced by photogenerated electrons (e<sup>−</sup>) and holes (h<sup>+</sup>) of Fe-nTiO<sub>2</sub> were the main active species in the degradation of ACE and ATZ. Additionally, the application of Fe-nTiO<sub>2</sub> significantly enhanced the growth of lettuce under sunlight; the degradation efficiencies of ACE and ATZ in lettuce were 98.5% and 100%, respectively. This work provides new insights into the removal of organic contaminants by photocatalysts under sunlight in agriculture.https://www.mdpi.com/2073-4395/14/3/461acetamipridatrazinenano titanium oxideFe<sup>3+</sup>-dopeddegradation mechanisms |
| spellingShingle | Zhanpeng Liu Junjian Lin Zhimin Xu Fangfang Li Siyao Wang Peng Gao Guomei Xiong Hongbo Peng Highly Effective Fe-Doped Nano Titanium Oxide for Removal of Acetamiprid and Atrazine under Simulated Sunlight Irradiation Agronomy acetamiprid atrazine nano titanium oxide Fe<sup>3+</sup>-doped degradation mechanisms |
| title | Highly Effective Fe-Doped Nano Titanium Oxide for Removal of Acetamiprid and Atrazine under Simulated Sunlight Irradiation |
| title_full | Highly Effective Fe-Doped Nano Titanium Oxide for Removal of Acetamiprid and Atrazine under Simulated Sunlight Irradiation |
| title_fullStr | Highly Effective Fe-Doped Nano Titanium Oxide for Removal of Acetamiprid and Atrazine under Simulated Sunlight Irradiation |
| title_full_unstemmed | Highly Effective Fe-Doped Nano Titanium Oxide for Removal of Acetamiprid and Atrazine under Simulated Sunlight Irradiation |
| title_short | Highly Effective Fe-Doped Nano Titanium Oxide for Removal of Acetamiprid and Atrazine under Simulated Sunlight Irradiation |
| title_sort | highly effective fe doped nano titanium oxide for removal of acetamiprid and atrazine under simulated sunlight irradiation |
| topic | acetamiprid atrazine nano titanium oxide Fe<sup>3+</sup>-doped degradation mechanisms |
| url | https://www.mdpi.com/2073-4395/14/3/461 |
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