Adjusting photocatalytic hydrogen production of TiO2 hollow nanospheres through nitrogen-induced shallow trapping levels
N-doped titanium dioxide (TiO[Formula: see text] hollow nanospheres with abundant oxygen vacancies were successfully synthesized by coupling urea treatment and annealing in an N2 atmosphere. The pristine TiO2 hollow nanospheres exhibit a shallow donor level for electron trapping, while the urea trea...
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| Format: | Article |
| Language: | English |
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World Scientific Publishing
2025-02-01
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| Series: | Journal of Advanced Dielectrics |
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| Online Access: | https://www.worldscientific.com/doi/10.1142/S2010135X2450005X |
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| author | Qingmiao Ren Peng Chen Na Sun Miao Yue Qi Zhang Weihu Kong Gaofei Ren Wen Guo Yongming Fu Jie Ma |
| author_facet | Qingmiao Ren Peng Chen Na Sun Miao Yue Qi Zhang Weihu Kong Gaofei Ren Wen Guo Yongming Fu Jie Ma |
| author_sort | Qingmiao Ren |
| collection | DOAJ |
| description | N-doped titanium dioxide (TiO[Formula: see text] hollow nanospheres with abundant oxygen vacancies were successfully synthesized by coupling urea treatment and annealing in an N2 atmosphere. The pristine TiO2 hollow nanospheres exhibit a shallow donor level for electron trapping, while the urea treatment generates a N 2p acceptor level for hole trapping. After annealing in N2, the sufficient N atoms generate abundant oxygen vacancies for trapping electrons, resulting in further improved charge separation efficiency. The N-doped TiO2 exhibits the highest H2 evolution rate, reaching 2867[Formula: see text][Formula: see text]mol[Formula: see text]g[Formula: see text][Formula: see text]h[Formula: see text], which is six times higher than that of pristine TiO2 hollow nanospheres. The introduction of oxygen vacancies by interstitial N provides a promising way to improve the photocatalysis activity of photocatalysts. |
| format | Article |
| id | doaj-art-49e64bfbd6b74c10822f62cccb540efb |
| institution | Kabale University |
| issn | 2010-135X 2010-1368 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | World Scientific Publishing |
| record_format | Article |
| series | Journal of Advanced Dielectrics |
| spelling | doaj-art-49e64bfbd6b74c10822f62cccb540efb2025-01-06T00:55:10ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682025-02-01150110.1142/S2010135X2450005XAdjusting photocatalytic hydrogen production of TiO2 hollow nanospheres through nitrogen-induced shallow trapping levelsQingmiao Ren0Peng Chen1Na Sun2Miao Yue3Qi Zhang4Weihu Kong5Gaofei Ren6Wen Guo7Yongming Fu8Jie Ma9School of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaSchool of Physics and Electronic Engineering & Institute of Laser Spectroscopy, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, P. R. ChinaN-doped titanium dioxide (TiO[Formula: see text] hollow nanospheres with abundant oxygen vacancies were successfully synthesized by coupling urea treatment and annealing in an N2 atmosphere. The pristine TiO2 hollow nanospheres exhibit a shallow donor level for electron trapping, while the urea treatment generates a N 2p acceptor level for hole trapping. After annealing in N2, the sufficient N atoms generate abundant oxygen vacancies for trapping electrons, resulting in further improved charge separation efficiency. The N-doped TiO2 exhibits the highest H2 evolution rate, reaching 2867[Formula: see text][Formula: see text]mol[Formula: see text]g[Formula: see text][Formula: see text]h[Formula: see text], which is six times higher than that of pristine TiO2 hollow nanospheres. The introduction of oxygen vacancies by interstitial N provides a promising way to improve the photocatalysis activity of photocatalysts.https://www.worldscientific.com/doi/10.1142/S2010135X2450005XTiO2hollow nanosphereoxygen vacancyphotocatalytic hydrogen production |
| spellingShingle | Qingmiao Ren Peng Chen Na Sun Miao Yue Qi Zhang Weihu Kong Gaofei Ren Wen Guo Yongming Fu Jie Ma Adjusting photocatalytic hydrogen production of TiO2 hollow nanospheres through nitrogen-induced shallow trapping levels Journal of Advanced Dielectrics TiO2 hollow nanosphere oxygen vacancy photocatalytic hydrogen production |
| title | Adjusting photocatalytic hydrogen production of TiO2 hollow nanospheres through nitrogen-induced shallow trapping levels |
| title_full | Adjusting photocatalytic hydrogen production of TiO2 hollow nanospheres through nitrogen-induced shallow trapping levels |
| title_fullStr | Adjusting photocatalytic hydrogen production of TiO2 hollow nanospheres through nitrogen-induced shallow trapping levels |
| title_full_unstemmed | Adjusting photocatalytic hydrogen production of TiO2 hollow nanospheres through nitrogen-induced shallow trapping levels |
| title_short | Adjusting photocatalytic hydrogen production of TiO2 hollow nanospheres through nitrogen-induced shallow trapping levels |
| title_sort | adjusting photocatalytic hydrogen production of tio2 hollow nanospheres through nitrogen induced shallow trapping levels |
| topic | TiO2 hollow nanosphere oxygen vacancy photocatalytic hydrogen production |
| url | https://www.worldscientific.com/doi/10.1142/S2010135X2450005X |
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