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Precisely dominating oxygen vacancy of Magneli phase titanium suboxides to efficiently remove quinolone antibiotics under visible light

文献类型：期刊论文

作者Luo, Meng Qi1,2; Liu, Hui Jun3; Yang, Ling Xu3; Wang, Wen Jun3; Zeng, Chao Liu3
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2024-08-09
卷号341页码:13
关键词Photocatalysis Degradation mechanism Oxygen vacancies Visible light
ISSN号1383-5866
DOI10.1016/j.seppur.2024.126626
通讯作者Liu, Hui Jun(hui_jun_liu@163.com) ; Zeng, Chao Liu(clzeng@imr.ac.cn)
英文摘要Oxygen vacancy modulation is often applied to the modification of photocatalysts as a typical technique that affects the electronic structure, light absorption properties, and surface adsorption properties of semiconductor materials. Titanium suboxide, a titanium oxide rich in oxygen vacancies, is hardly ever used for photocatalytic degradation due to the difficulty of obtaining a single phase. In this study, the Magneli phases Ti4O7 and Ti3O5 were used as novel photocatalysts exhibiting effective photodegradation of quinolone antibiotics. The removal rate of levofloxacin (LEV) by visible light irradiation of Ti4O7 and Ti3O5 reached 91.2 % and 87.3 %, superior to most of the titanium oxide photocatalysts reported in the literature, whereas the P25 presented a decomposition rate of 13.0 %. This prominent effect is attributed to the contribution of oxygen vacancies extending the light response range and enhancing the separation efficiency of photogenerated carriers. Meanwhile, oxygen vacancies as electron trapping centers also reduce the recombination of photogenerated electron -hole pairs and enable the generation of superoxide radicals, which dominate photocatalysis. The reaction pathways and reusability of Ti4O7 photocatalysts for mineralization of LEV were further analyzed. The visible photocatalysis of P25 by photosensitization, which is different from the photocatalytic mechanism of titanium suboxide, was also verified. This work certifies that titanium suboxide materials have promising applications in photocatalysis.
资助项目National Natural Science Foundation of China[51501205]
WOS研究方向Engineering
语种英语
WOS记录号WOS:001207895400001
出版者ELSEVIER
资助机构National Natural Science Foundation of China
源URL  
专题金属研究所_中国科学院金属研究所
通讯作者Liu, Hui Jun; Zeng, Chao Liu
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
3.Songshan Lake Mat Lab, Dongguan 523808, Peoples R China
推荐引用方式
GB/T 7714		 Luo, Meng Qi,Liu, Hui Jun,Yang, Ling Xu,et al. Precisely dominating oxygen vacancy of Magneli phase titanium suboxides to efficiently remove quinolone antibiotics under visible light[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2024,341:13.
APA Luo, Meng Qi,Liu, Hui Jun,Yang, Ling Xu,Wang, Wen Jun,&Zeng, Chao Liu.(2024).Precisely dominating oxygen vacancy of Magneli phase titanium suboxides to efficiently remove quinolone antibiotics under visible light.SEPARATION AND PURIFICATION TECHNOLOGY,341,13.
MLA Luo, Meng Qi,et al."Precisely dominating oxygen vacancy of Magneli phase titanium suboxides to efficiently remove quinolone antibiotics under visible light".SEPARATION AND PURIFICATION TECHNOLOGY 341(2024):13.

入库方式： OAI收割

来源：金属研究所

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