Enhanced Photoelectrochemical Activity of ZnO-Coated TiO2 Nanotubes and Its Dependence on ZnO Coating Thickness
文献类型：期刊论文
| 作者 | Cai, Hua1; Liang, Peipei1; Hu, Zhigao2; Shi, Liqun3; Yang, Xu1; Sun, Jian1; Xu, Ning1; Wu, Jiada1 |
| 刊名 | NANOSCALE RESEARCH LETTERS
 |
| 出版日期 | 2016-02-24 |
| 卷号 | 11页码:104 |
| 关键词 | Photoelectrochemical activity Heterogeneous nanostructure TiO2 ZnO ZnO-coated TiO2 nanotube |
| ISSN号 | 1556-276X |
| DOI | 10.1186/s11671-016-1309-9 |
| 英文摘要 | One-dimensional heterogeneous nanostructures in the form of ZnO-coated TiO2 nanotubes (ZnO/TiO2 NTs) were fabricated by atomic layer deposition of an ultrathin ZnO coating on electrochemical anodization-formed TiO2 nanotubes (NTs) with the thickness of ZnO coating being precisely controlled at atomic scale, and the photoelectrochemical activity of the fabricated ZnO/TiO2 NTs and the influence of ZnO coating and its thickness were studied. The structures of TiO2 NTs and ZnO coatings were characterized by X-ray diffraction, Raman backscattering spectroscopy, and transmission electron microscopy. The photoelectrochemical activity was studied through the measurements of electrochemical impendence, flat-band potential, and transient photocurrent density. The TiO2 NTs exhibit anatase structure, and the ZnO coatings are structured with hexagonal wurtzite. The photoelectrochemical activity of the ZnO/TiO2 NTs is strongly dependent on the thickness of ZnO coating. ZnO/TiO2 NTs with a thinner rather than a thicker ZnO coating exhibit better photoelectrochemical activity with reduced charge transfer resistance, increased negative flat-band potentials, and enhanced photocurrent densities. Under visible illumination, an increase of about 60 % in the photoelectrochemical activity is obtained for ZnO/TiO2 NTs with an about 2-nm-thick ZnO coating. |
| WOS关键词 | SENSITIZED SOLAR-CELLS ; ATOMIC LAYER DEPOSITION ; CORE/SHELL SEMICONDUCTOR NANOCRYSTALS ; PHOTOCATALYTIC ACTIVITY ; OPTICAL-PROPERTIES ; PHOTOLUMINESCENCE ; ZNO-TIO2 ; ARRAYS ; PERFORMANCE ; SURFACE |
| 资助项目 | National Natural Science Foundation of China[11275051] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000391753000008 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/44178]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wu, Jiada |
| 作者单位 | 1.Fudan Univ, Dept Opt Sci & Engn, Shanghai 200433, Peoples R China 2.East China Normal Univ, Key Lab Polar Mat & Devices, Minist Educ, Shanghai 200241, Peoples R China 3.Fudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Hua,Liang, Peipei,Hu, Zhigao,et al. Enhanced Photoelectrochemical Activity of ZnO-Coated TiO2 Nanotubes and Its Dependence on ZnO Coating Thickness[J]. NANOSCALE RESEARCH LETTERS,2016,11:104. |
| APA | Cai, Hua.,Liang, Peipei.,Hu, Zhigao.,Shi, Liqun.,Yang, Xu.,...&Wu, Jiada.(2016).Enhanced Photoelectrochemical Activity of ZnO-Coated TiO2 Nanotubes and Its Dependence on ZnO Coating Thickness.NANOSCALE RESEARCH LETTERS,11,104. |
| MLA | Cai, Hua,et al."Enhanced Photoelectrochemical Activity of ZnO-Coated TiO2 Nanotubes and Its Dependence on ZnO Coating Thickness".NANOSCALE RESEARCH LETTERS 11(2016):104. |
入库方式： OAI收割
来源：近代物理研究所
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