Directly Probing Charge Separation at Interface of TiO2 Phase Junction
文献类型：期刊论文
| 作者 | Li, Can2,3; Gao, Yuying1,2,3; Zhu, Dian2,3; An, Hongyu1,2,3; Yan, Pengli1,3; Huang, Baokun3; Chen, Ruotian1,2,3; Fan, Fengtao2,3 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
 |
| 出版日期 | 2017-04-06 |
| 卷号 | 8期号:7页码:1419-1423 |
| 英文摘要 | Phase junction is often recognized as an effective strategy to achieve efficient charge separation in photocatalysis and photochemistry. As a crucial factor to determine the photogenerated charges dynamics, there is an increasingly hot debate about the energy band alignment across the interface of phase junction. Herein, we reported the direct measurement of the surface potential profile over the interface of TiO2 phase junction. A built-in electric field up to 1 kV/cm from rutile to anatase nanoparticle was detected by Kelvin Probe Force Microscopy (KPFM). Home-built spatially resolved surface photovoltage spectroscopy (SRSPS) supplies a direct evidence for the vectorial charge transfer of photogenerated electrons from rutile to anatase. Moreover, the tunable anatase nanoparticle sizes in TiO2 phase junction leads to high surface photovoltage (SPV) by creating completely depleted space charge region (SCR) and enhancing the charge separation efficiency. The results provide a strong basis for understanding the impact of built-in electric field on the charge transfer across the interface of artificial photocatalysts. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 关键词[WOS] | PHOTOCATALYTIC ACTIVITY ; RUTILE TIO2 ; TITANIUM-DIOXIDE ; FORCE MICROSCOPY ; BAND ALIGNMENT ; CARRIER SEPARATION ; ANATASE ; MECHANISMS ; SURFACE ; PHOTOLUMINESCENCE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000398884800016 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/150336]  |
| 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 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Collaborat Innovat Ctr Chem Energy Mat iChEM, Zhongshan Rd 457, Dalian 116023, Peoples R China 3.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Can,Gao, Yuying,Zhu, Dian,et al. Directly Probing Charge Separation at Interface of TiO2 Phase Junction[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017,8(7):1419-1423. |
| APA | Li, Can.,Gao, Yuying.,Zhu, Dian.,An, Hongyu.,Yan, Pengli.,...&Fan, Fengtao.(2017).Directly Probing Charge Separation at Interface of TiO2 Phase Junction.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,8(7),1419-1423. |
| MLA | Li, Can,et al."Directly Probing Charge Separation at Interface of TiO2 Phase Junction".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 8.7(2017):1419-1423. |
入库方式： OAI收割
来源：大连化学物理研究所
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