Defect induced nickel, nitrogen-codoped mesoporous TiO2 microspheres with enhanced visible light photocatalytic activity
文献类型：期刊论文
| 作者 | Xiong, Fengqiang; Zou, Mingming; Feng, Lu; Ganeshraja, Ayyakannu Sundaram; Yang, Minghui |
| 刊名 | SOLID STATE SCIENCES
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 60页码:1-10 |
| 关键词 | Visible Light Photocatalysis Trap Level Oxygen Vancancies Substitutional And Interstitial n |
| ISSN号 | 1293-2558 |
| DOI | 10.1016/j.solidstatesciences.2016.07.007 |
| 文献子类 | Article |
| 英文摘要 | Nickel, nitrogen-codoped mesoporous TiO2 microspheres (Ni-N-TiO2) with high surface area, and an effective direct band gap energy of similar to 2.58 eV. Nickel sulfate used as the Ni source and ammonia gas as the N source here. The efficiency of the as-prepared samples was investigated by monitoring the degradation of Rhodamine B under visible light irradiation. The experimental results indicate that Ni-doped mesoporous TiO2 microspheres show higher photocatalytic activity than mesoporous TiO2 microspheres under visible light irradiation. It mainly due to that the electron trap level (Ni2+/Ni+) promoting the separation of charge carriers and the oxygen vacancies inducing the visible light absorption. In addition, Ni-N-TiO2 shows enhanced activity compared with Ni-TiO2. Codopants and dopants are found to be uniformly distributed in TiO2 matrix. Among the all samples the 0.5% molar quantity of Ni dopant and 500 degrees C 2 h nitriding condition gives the highest photocatalytic activity. The treatment of ammonia gas on Ni-TiO2 sample induced oxygen vancancies, substitutional and interstitial N. A suitable treatment by ammonia gas also promote separation of charge carriers and the absorption of visible light. The active species generated in the photocatalytic system were also investigated. The strategy presented here gives a promising route towards the development of a metal and non-metal codoped semiconductor materials for applied photocatalysis and related applications. (C) 2016 Elsevier Masson SAS. All rights reserved. |
| WOS关键词 | DOPED TITANIUM-OXIDE ; BAND-GAP ; WATER-TREATMENT ; NANOPARTICLES ; NI ; DEGRADATION ; OXIDATION ; DIOXIDE ; POWDERS ; FILMS |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000384779800001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/169996]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Yang, Minghui |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong, Fengqiang,Zou, Mingming,Feng, Lu,et al. Defect induced nickel, nitrogen-codoped mesoporous TiO2 microspheres with enhanced visible light photocatalytic activity[J]. SOLID STATE SCIENCES,2016,60:1-10. |
| APA | Xiong, Fengqiang,Zou, Mingming,Feng, Lu,Ganeshraja, Ayyakannu Sundaram,&Yang, Minghui.(2016).Defect induced nickel, nitrogen-codoped mesoporous TiO2 microspheres with enhanced visible light photocatalytic activity.SOLID STATE SCIENCES,60,1-10. |
| MLA | Xiong, Fengqiang,et al."Defect induced nickel, nitrogen-codoped mesoporous TiO2 microspheres with enhanced visible light photocatalytic activity".SOLID STATE SCIENCES 60(2016):1-10. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。