Preparation, Characterization of ZnTiO<sub>3</sub>/ZnO Composite Materials and Their Photocatalytic Performance
With zinc acetate and butyl titanate as raw materials, pure ZnO and ZnTiO<sub>3</sub>/ZnO composite photocatalysts were synthesized by a sol–gel method and calcined at 550 °C. The crystal structure, morphology, surface area, optical property, and element valence states of samples were ch...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/8/1345 |
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| author | Mao Tang Shiji Lu Lili He Xiaodong Zhu Wei Feng Wanming Zhang |
| author_facet | Mao Tang Shiji Lu Lili He Xiaodong Zhu Wei Feng Wanming Zhang |
| author_sort | Mao Tang |
| collection | DOAJ |
| description | With zinc acetate and butyl titanate as raw materials, pure ZnO and ZnTiO<sub>3</sub>/ZnO composite photocatalysts were synthesized by a sol–gel method and calcined at 550 °C. The crystal structure, morphology, surface area, optical property, and element valence states of samples were characterized and the photocatalytic activity of the prepared photocatalysts were assessed by the degradation of rhodamine B. Results show that the crystal structure of ZnO is a hexagonal wurtzite phase with a band gap of 3.20 eV. When the Zn/Ti molar ratio reaches 0.2, ZnTiO<sub>3</sub> phase appears and ZnTiO<sub>3</sub>/ZnO composite forms, which advances the transfer of photogenerated charges. ZnTiO<sub>3</sub>/ZnO (Ti/Zn = 0.2) exhibits the highest photocatalytic activity, and the degradation degree of RhB reaches 99% after 60 min, which is higher than that of pure ZnO (90%). An exorbitant Ti/Zn molar ratio will reduce the crystallinity and form more amorphous components, which is not conducive to photocatalytic performance. Therefore, when the Ti/Zn molar ratio exceeds 0.2, the photocatalytic activities of ZnTiO<sub>3</sub>/ZnO composites decrease. |
| first_indexed | 2024-03-09T13:12:25Z |
| format | Article |
| id | doaj.art-3e12ff7bb0c54f6cb6c73efc0bbc0641 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T13:12:25Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-3e12ff7bb0c54f6cb6c73efc0bbc06412023-11-30T21:40:07ZengMDPI AGNanomaterials2079-49912022-04-01128134510.3390/nano12081345Preparation, Characterization of ZnTiO<sub>3</sub>/ZnO Composite Materials and Their Photocatalytic PerformanceMao Tang0Shiji Lu1Lili He2Xiaodong Zhu3Wei Feng4Wanming Zhang5School of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Resources and Environment, Xichang University, Xichang 615000, ChinaWith zinc acetate and butyl titanate as raw materials, pure ZnO and ZnTiO<sub>3</sub>/ZnO composite photocatalysts were synthesized by a sol–gel method and calcined at 550 °C. The crystal structure, morphology, surface area, optical property, and element valence states of samples were characterized and the photocatalytic activity of the prepared photocatalysts were assessed by the degradation of rhodamine B. Results show that the crystal structure of ZnO is a hexagonal wurtzite phase with a band gap of 3.20 eV. When the Zn/Ti molar ratio reaches 0.2, ZnTiO<sub>3</sub> phase appears and ZnTiO<sub>3</sub>/ZnO composite forms, which advances the transfer of photogenerated charges. ZnTiO<sub>3</sub>/ZnO (Ti/Zn = 0.2) exhibits the highest photocatalytic activity, and the degradation degree of RhB reaches 99% after 60 min, which is higher than that of pure ZnO (90%). An exorbitant Ti/Zn molar ratio will reduce the crystallinity and form more amorphous components, which is not conducive to photocatalytic performance. Therefore, when the Ti/Zn molar ratio exceeds 0.2, the photocatalytic activities of ZnTiO<sub>3</sub>/ZnO composites decrease.https://www.mdpi.com/2079-4991/12/8/1345ZnOZnTiO<sub>3</sub>/ZnOphotocatalytic performancesol–gel |
| spellingShingle | Mao Tang Shiji Lu Lili He Xiaodong Zhu Wei Feng Wanming Zhang Preparation, Characterization of ZnTiO<sub>3</sub>/ZnO Composite Materials and Their Photocatalytic Performance Nanomaterials ZnO ZnTiO<sub>3</sub>/ZnO photocatalytic performance sol–gel |
| title | Preparation, Characterization of ZnTiO<sub>3</sub>/ZnO Composite Materials and Their Photocatalytic Performance |
| title_full | Preparation, Characterization of ZnTiO<sub>3</sub>/ZnO Composite Materials and Their Photocatalytic Performance |
| title_fullStr | Preparation, Characterization of ZnTiO<sub>3</sub>/ZnO Composite Materials and Their Photocatalytic Performance |
| title_full_unstemmed | Preparation, Characterization of ZnTiO<sub>3</sub>/ZnO Composite Materials and Their Photocatalytic Performance |
| title_short | Preparation, Characterization of ZnTiO<sub>3</sub>/ZnO Composite Materials and Their Photocatalytic Performance |
| title_sort | preparation characterization of zntio sub 3 sub zno composite materials and their photocatalytic performance |
| topic | ZnO ZnTiO<sub>3</sub>/ZnO photocatalytic performance sol–gel |
| url | https://www.mdpi.com/2079-4991/12/8/1345 |
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