Black TiO<sub>x</sub> Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive Sputtering
Titanium oxide is widely applied as a photocatalyst. However, its low efficiency and narrow light absorption range are two main disadvantages that severely impede its practical application. In this work, black TiO<sub>x</sub> films with different chemical compositions were fabricated by...
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2021-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/10/2508 |
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| author | Quan Mao Meng Liu Yajie Li Yuquan Wei Yong Yang Zhengren Huang |
| author_facet | Quan Mao Meng Liu Yajie Li Yuquan Wei Yong Yang Zhengren Huang |
| author_sort | Quan Mao |
| collection | DOAJ |
| description | Titanium oxide is widely applied as a photocatalyst. However, its low efficiency and narrow light absorption range are two main disadvantages that severely impede its practical application. In this work, black TiO<sub>x</sub> films with different chemical compositions were fabricated by tuning target voltage and controlling O<sub>2</sub> flow during reactive DC magnetron sputtering. The optimized TiO<sub>x</sub> films with mixed phases (TiO, Ti<sub>2</sub>O<sub>3</sub>, Ti<sub>3</sub>O<sub>5</sub>, and TiO<sub>2</sub>) exhibited fantastic photothermal and photocatalytic activity by combining high light-absorptive Ti<sub>2</sub>O<sub>3</sub> and Ti<sub>3</sub>O<sub>5</sub> phases with the photocatalytic TiO<sub>2</sub> phase. The sample prepared with oxygen flow at 5.6 ± 0.2 sccm and target voltage near 400 V exhibited excellent optical absorbance of 89.29% under visible light, which could improve surface temperature to 114 °C under sunlight. This film could degrade Rhodamine-B up to 74% after 150 min of UV irradiation. In a word, this work provides a guideline for fabricating black TiO<sub>x</sub> films with photothermal-assisted photocatalytic activity by reactive DC magnetron sputtering, which could avoid the usage of hydrogen and is convenient for quantity preparation. |
| first_indexed | 2024-03-10T11:29:04Z |
| format | Article |
| id | doaj.art-b7b68aad611e4ba492f9aafe2ecfe356 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:29:04Z |
| publishDate | 2021-05-01 |
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| spelling | doaj.art-b7b68aad611e4ba492f9aafe2ecfe3562023-11-21T19:24:25ZengMDPI AGMaterials1996-19442021-05-011410250810.3390/ma14102508Black TiO<sub>x</sub> Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive SputteringQuan Mao0Meng Liu1Yajie Li2Yuquan Wei3Yong Yang4Zhengren Huang5State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, ChinaTitanium oxide is widely applied as a photocatalyst. However, its low efficiency and narrow light absorption range are two main disadvantages that severely impede its practical application. In this work, black TiO<sub>x</sub> films with different chemical compositions were fabricated by tuning target voltage and controlling O<sub>2</sub> flow during reactive DC magnetron sputtering. The optimized TiO<sub>x</sub> films with mixed phases (TiO, Ti<sub>2</sub>O<sub>3</sub>, Ti<sub>3</sub>O<sub>5</sub>, and TiO<sub>2</sub>) exhibited fantastic photothermal and photocatalytic activity by combining high light-absorptive Ti<sub>2</sub>O<sub>3</sub> and Ti<sub>3</sub>O<sub>5</sub> phases with the photocatalytic TiO<sub>2</sub> phase. The sample prepared with oxygen flow at 5.6 ± 0.2 sccm and target voltage near 400 V exhibited excellent optical absorbance of 89.29% under visible light, which could improve surface temperature to 114 °C under sunlight. This film could degrade Rhodamine-B up to 74% after 150 min of UV irradiation. In a word, this work provides a guideline for fabricating black TiO<sub>x</sub> films with photothermal-assisted photocatalytic activity by reactive DC magnetron sputtering, which could avoid the usage of hydrogen and is convenient for quantity preparation.https://www.mdpi.com/1996-1944/14/10/2508black TiO<sub>x</sub>reactive sputteringphotothermal-assisted photocatalysis |
| spellingShingle | Quan Mao Meng Liu Yajie Li Yuquan Wei Yong Yang Zhengren Huang Black TiO<sub>x</sub> Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive Sputtering Materials black TiO<sub>x</sub> reactive sputtering photothermal-assisted photocatalysis |
| title | Black TiO<sub>x</sub> Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive Sputtering |
| title_full | Black TiO<sub>x</sub> Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive Sputtering |
| title_fullStr | Black TiO<sub>x</sub> Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive Sputtering |
| title_full_unstemmed | Black TiO<sub>x</sub> Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive Sputtering |
| title_short | Black TiO<sub>x</sub> Films with Photothermal-Assisted Photocatalytic Activity Prepared by Reactive Sputtering |
| title_sort | black tio sub x sub films with photothermal assisted photocatalytic activity prepared by reactive sputtering |
| topic | black TiO<sub>x</sub> reactive sputtering photothermal-assisted photocatalysis |
| url | https://www.mdpi.com/1996-1944/14/10/2508 |
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