Direct Observation of Charge Separation on Anatase TiO2 Crystals with Selectively Etched {001} Facets | |
Department | ERC国家工程研究中心 |
Liu XG(刘小刚); Dong GJ(董国俊); Li, Shaopeng; Lu GX(吕功煊); Bi YP(毕迎普); Bi YP(毕迎普) | |
The second department | osso国家重点实验室 |
2016 | |
Source Publication | Journal of the American Chemical Society |
ISSN | 0002-7863 |
Volume | 138Issue:9Pages:2917-2920 |
Abstract | Synchronous illumination X-ray photoelectron spectroscopy (SIXPS) was employed for the first time to directly identify the photogenerated charge separation and transfer on anatase TiO2 single-crystals with selectively etched {001} facets. More specifically, for the TiO2 crystals with intact {001} and {101} facets, most of photogenerated charge carriers rapidly recombined, and no evident electron–hole separation was detected. With selectively etching on {001} facets, high efficient charge separation via hole transfer to titanium and electron to oxygen was clearly observed. However, when the {001} facets were completely etched into a hollow structure, the recombination for photogenerated electron–hole pairs would dominate again. These demonstrations clearly reveal that the appropriate corrosion on {001} facets could facilitate more efficient electron–hole separation and transfer. As expected, the optimized TiO2 microcrystals with etched {001} facets could achieve a hydrogen generation rate of 74.3 μmol/h/g, which is nearly 7 times higher than the intact-TiO2 crystals. |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1021/jacs.5b12521 |
Funding Organization | the "Hundred Talents Program" of the Chinese Academy of Sciences;the National Natural Science foundation of China (21573264;21273255;21303232;21433007) |
Indexed By | SCI |
If | 13.858 |
Language | 英语 |
Funding Project | 能源与环境纳米催化材料组;环境催化与氢能源研究组;环境催化与清洁能源研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/19780 |
Collection | 精细石油化工中间体国家工程研究中心(ERC) 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Bi YP(毕迎普) |
Affiliation | Chinese Acad Sci, Lanzhou Inst Chem Phys, Natl Engn Res Ctr Fine Petrochem Intermediates, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China |
Recommended Citation GB/T 7714 | Liu XG,Dong GJ,Li, Shaopeng,et al. Direct Observation of Charge Separation on Anatase TiO2 Crystals with Selectively Etched {001} Facets[J]. Journal of the American Chemical Society,2016,138(9):2917-2920. |
APA | Liu XG,Dong GJ,Li, Shaopeng,Lu GX,Bi YP,&毕迎普.(2016).Direct Observation of Charge Separation on Anatase TiO2 Crystals with Selectively Etched {001} Facets.Journal of the American Chemical Society,138(9),2917-2920. |
MLA | Liu XG,et al."Direct Observation of Charge Separation on Anatase TiO2 Crystals with Selectively Etched {001} Facets".Journal of the American Chemical Society 138.9(2016):2917-2920. |
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jacs.5b12521.pdf(3342KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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