中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Directly Probing Charge Separation at Interface of TiO2 Phase Junction
作者: Gao, Yuying1, 2, 3;  Zhu, Dian1, 3;  An, Hongyu1, 2, 3;  Yan, Pengli1, 2;  Huang, Baokun1;  Chen, Ruotian1, 2, 3;  Fan, Fengtao1, 3;  Li, Can1, 3
刊名: JOURNAL OF PHYSICAL CHEMISTRY LETTERS
发表日期: 2017-04-06
DOI: 10.1021/acs.jpclett.7b00285
卷: 8, 期:7, 页:1419-1423
收录类别: SCI
文章类型: Article
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
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.
关键词[WOS]: PHOTOCATALYTIC ACTIVITY ;  RUTILE TIO2 ;  TITANIUM-DIOXIDE ;  FORCE MICROSCOPY ;  BAND ALIGNMENT ;  CARRIER SEPARATION ;  ANATASE ;  MECHANISMS ;  SURFACE ;  PHOTOLUMINESCENCE
语种: 英语
WOS记录号: WOS:000398884800016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150336
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Collaborat Innovat Ctr Chem Energy Mat iChEM, Zhongshan Rd 457, Dalian 116023, Peoples R China

Recommended Citation:
Gao, Yuying,Zhu, Dian,An, Hongyu,et al. Directly Probing Charge Separation at Interface of TiO2 Phase Junction[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017,8(7):1419-1423.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Gao, Yuying]'s Articles
 [Zhu, Dian]'s Articles
 [An, Hongyu]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Gao, Yuying]‘s Articles
 [Zhu, Dian]‘s Articles
 [An, Hongyu]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace