Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic Acid
Rare earth elements are plentiful in Gannan area, China, and there is a large amount of wastewater from all kinds of mines. In this paper, rare-earth modification TiO2 composites (RE/TiO2, RE = La, Ce, Gd, Yb) was studied by theory computation and experimental performance. The prepared RE/TiO2 was i...
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MDPI AG
2019-01-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/9/2/339 |
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| author | Chunying Wang Ting Zeng Sipin Zhu Chuantao Gu |
| author_facet | Chunying Wang Ting Zeng Sipin Zhu Chuantao Gu |
| author_sort | Chunying Wang |
| collection | DOAJ |
| description | Rare earth elements are plentiful in Gannan area, China, and there is a large amount of wastewater from all kinds of mines. In this paper, rare-earth modification TiO2 composites (RE/TiO2, RE = La, Ce, Gd, Yb) was studied by theory computation and experimental performance. The prepared RE/TiO2 was investigated for the degradation of benzohydroxamic acid (BHA) as a typical residual reagent in wastewater from beneficiation. The crystallinity, morphology, specific surface area, light absorption, and composition of compound were investigated by various techniques. As a result of computation and experimentation, four different electron configurations of rare earth all retained the anatase phase of TiO2 and reduced the band gap of TiO2 to some degree compared with pure TiO2. Different rare-earth elements and calcination temperatures resulted in different removal effects on BHA. The optimum doping contents were 0.75% (500 °C), 0.20% (500 °C), 0.70% (500 °C) and 0.50% (450 °C) for La, Ce, Gd, Yb respectively. All the RE/TiO2 composites studied in this research still possessed good photoactivity after four runs, which supports the theoretical and practical basement for the photocatalytic treatment of mining and metallurgy wastewater. |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-23T10:24:36Z |
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| spelling | doaj.art-f5a0decbc5444e50958bb6f88beb181f2022-12-21T17:50:37ZengMDPI AGApplied Sciences2076-34172019-01-019233910.3390/app9020339app9020339Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic AcidChunying Wang0Ting Zeng1Sipin Zhu2Chuantao Gu3College of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaCollege of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaCollege of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaCollege of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaRare earth elements are plentiful in Gannan area, China, and there is a large amount of wastewater from all kinds of mines. In this paper, rare-earth modification TiO2 composites (RE/TiO2, RE = La, Ce, Gd, Yb) was studied by theory computation and experimental performance. The prepared RE/TiO2 was investigated for the degradation of benzohydroxamic acid (BHA) as a typical residual reagent in wastewater from beneficiation. The crystallinity, morphology, specific surface area, light absorption, and composition of compound were investigated by various techniques. As a result of computation and experimentation, four different electron configurations of rare earth all retained the anatase phase of TiO2 and reduced the band gap of TiO2 to some degree compared with pure TiO2. Different rare-earth elements and calcination temperatures resulted in different removal effects on BHA. The optimum doping contents were 0.75% (500 °C), 0.20% (500 °C), 0.70% (500 °C) and 0.50% (450 °C) for La, Ce, Gd, Yb respectively. All the RE/TiO2 composites studied in this research still possessed good photoactivity after four runs, which supports the theoretical and practical basement for the photocatalytic treatment of mining and metallurgy wastewater.http://www.mdpi.com/2076-3417/9/2/339rare-earth modificationtheory computationBHAphotocatalytic degradation |
| spellingShingle | Chunying Wang Ting Zeng Sipin Zhu Chuantao Gu Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic Acid Applied Sciences rare-earth modification theory computation BHA photocatalytic degradation |
| title | Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic Acid |
| title_full | Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic Acid |
| title_fullStr | Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic Acid |
| title_full_unstemmed | Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic Acid |
| title_short | Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic Acid |
| title_sort | synergistic mechanism of rare earth modification tio2 and photodegradation on benzohydroxamic acid |
| topic | rare-earth modification theory computation BHA photocatalytic degradation |
| url | http://www.mdpi.com/2076-3417/9/2/339 |
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