Nb-doped coherent TiO2/LaAlO3 interfaces: Segregation mechanism and improved photocatalytic performance
文献类型：期刊论文
| 作者 | Li, Xiang1,2; Jiang, Yixiao1,2; Jin, Qianqian3; Qin, Fei1,2; Yao, Tingting1,2; Tao, Ang1,2; Yan, Xuexi1,2; Gao, Chunyang1,2; Yang, Zhiqing4; Chen, Chunlin1,2 |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2025 |
| 卷号 | 282页码:11 |
| 关键词 | Coherent interfaces Elemental doping Photocatalytic Transmission electron microscopy First-principles calculations TiO2 |
| ISSN号 | 1359-6454 |
| DOI | 10.1016/j.actamat.2024.120504 |
| 通讯作者 | Yao, Tingting(ttyao11s@imr.ac.cn) ; Chen, Chunlin(clchen@imr.ac.cn) ; Liu, Gang(gangliu@imr.ac.cn) |
| 英文摘要 | Elemental doping at coherent interfaces is very difficult and rarely used to improve the interfacial properties since coherent interfaces have low interfacial energies and lack open space for trapping dopant atoms. Exploring universally applicable strategies for elemental doping at coherent interfaces represents an important progress in interface science and engineering. In this study, Nb atoms are successfully doped at coherent (001) LaAlO3/ anatase-TiO2 interfaces, which enhances greatly the efficiency of photocatalytic hydrogen production from water. Transmission electron microscopy investigations reveal that both LaO- terminated and AlO2-terminated LaAlO3/anatase-TiO2 interfaces can trap two layers of Nb atoms, which accompanies with the formation of La vacancies between them. First-principles calculations suggest that Nb atoms segregate at the interfaces under the action of potential gradient, which increases significantly the strength of the built-in electric field in TiO2, thereby facilitating the separation of photogenerated carriers and improving the photocatalytic performance. The H2 production of the Nb doped coherent interface is about 4 times that of the pristine coherent interface. Since potential gradient widely exists at various interfaces including the coherent ones, elemental doping by potential gradient should be an universally applicable fabrication method for tuning the properties of interfaces and heterostructures. |
| 资助项目 | National Natural Science Foundation of China[52125101] ; National Natural Science Foundation of China[52271015] ; Ji Hua Laboratory Project[X210141TL210] ; Guangdong Major Project of Basic Research[2021B0301030003] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001349666500001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; Ji Hua Laboratory Project ; Guangdong Major Project of Basic Research |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yao, Tingting; Chen, Chunlin; Liu, Gang |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Guangxi Univ Sci & Technol, Ctr Struct Adv Matter, Sch Elect Engn, Liuzhou 545006, Peoples R China 4.Bay Area Ctr Electron Microscopy, Songshan Lake Mat Lab, Dongguan 523808, Peoples R China 5.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 6.Jihua Lab, Foshan 528251, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiang,Jiang, Yixiao,Jin, Qianqian,et al. Nb-doped coherent TiO2/LaAlO3 interfaces: Segregation mechanism and improved photocatalytic performance[J]. ACTA MATERIALIA,2025,282:11. |
| APA | Li, Xiang.,Jiang, Yixiao.,Jin, Qianqian.,Qin, Fei.,Yao, Tingting.,...&Ye, Hengqiang.(2025).Nb-doped coherent TiO2/LaAlO3 interfaces: Segregation mechanism and improved photocatalytic performance.ACTA MATERIALIA,282,11. |
| MLA | Li, Xiang,et al."Nb-doped coherent TiO2/LaAlO3 interfaces: Segregation mechanism and improved photocatalytic performance".ACTA MATERIALIA 282(2025):11. |
入库方式： OAI收割
来源：金属研究所
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