Effective nitrogen doping of TiO 2 polymorphs at mild temperatures for visible-light-responsive hydrogen evolution
文献类型：期刊论文
| 作者 | Chen, Yaping1,2; Ma, Shangyi2; Yang, Yongqiang1,2; Qiu, Jianhang2; Kang, Xiangdong2; Ab, Gang Liu1,2 |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2024-06-15 |
| 卷号 | 664页码:640-649 |
| 关键词 | Visible light absorption Band engineering Dope Charge transfer Visible light responsiveness |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/j.jcis.2024.03.075 |
| 通讯作者 | Yang, Yongqiang(yqyang@imr.ac.cn) ; Ab, Gang Liu(gangliu@imr.ac.cn) |
| 英文摘要 | Herein, a mild-temperature nitrogen doping route with the urea-derived gaseous species as the active doping agent is proposed to realize visible-light-responsive photocatalytic hydrogen evolution both for the anatase and rutile TiO2. DFT simulations reveal that the cyanic acid (HOCN), derived from the decomposition of urea, plays a curial role in the effective doping of nitrogen in TiO2 at mild temperatures. Photocatalytic performance demonstrates that both the anatase and rutile TiO2 doped at mild temperatures exhibit the highest hydrogen evolution rates, although the ones prepared at high temperatures possess higher absorbance in the visible range. Steady-state and transient surface photovoltage characterizations of these doped TiO2 polymorphs prepared at different temperatures reveal that harsh conditions (high temperature reaction) typically result in the formation of intrinsic defects that are detrimental to the transport of the low-energy visible-light-induced electrons, while the mild-temperature nitrogen-doping could flatten the pristine upward band bending without triggering the formation of Ti3+, thus achieving enhanced visible-light-responsive hydrogen evolution rates. We anticipate that our findings will provide inspiring information for shrinking the gap between the visible -light -absorbance and the visible -light -responsiveness in the band engineering of wide-bandgap metal -oxide photocatalysts. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[52072379] ; National Natural Science Foundation of China (NSFC)[U2202252] ; National Natural Science Foundation of China (NSFC)[51825204] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2022190] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001225829400001 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, Yongqiang; Ab, Gang 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 Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yaping,Ma, Shangyi,Yang, Yongqiang,et al. Effective nitrogen doping of TiO 2 polymorphs at mild temperatures for visible-light-responsive hydrogen evolution[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2024,664:640-649. |
| APA | Chen, Yaping,Ma, Shangyi,Yang, Yongqiang,Qiu, Jianhang,Kang, Xiangdong,&Ab, Gang Liu.(2024).Effective nitrogen doping of TiO 2 polymorphs at mild temperatures for visible-light-responsive hydrogen evolution.JOURNAL OF COLLOID AND INTERFACE SCIENCE,664,640-649. |
| MLA | Chen, Yaping,et al."Effective nitrogen doping of TiO 2 polymorphs at mild temperatures for visible-light-responsive hydrogen evolution".JOURNAL OF COLLOID AND INTERFACE SCIENCE 664(2024):640-649. |
入库方式： OAI收割
来源：金属研究所
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