Enhanced photoelectrochemical performance of {001}TiO2/{001}SrTiO3 epitaxial heterostructures
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- 作者：Qianqian Shang ; Tao Yu ; Xin Tan ; Zhiyang Zhang…
- 关键词：Total working pressure ; {001}TiO2/{001}SrTiO3 heterostructures ; Atomically controlled layer ; by ; layer growth model ; Photoelectrochemical properties ; Superhydrophilicity
- 刊名：Journal of Solid State Electrochemistry
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：20
- 期：1
- 页码：123-132
- 全文大小：2,392 KB
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Tao Yu (1) (3)
Xin Tan (2)
Zhiyang Zhang (4)
Yunling Zou (1)
Ling Zhang (6)
Yuqing Zhang (1)
Siyu Wang (5)
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
3. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, People’s Republic of China
2. School of Science, Tibet University, Tibet, 850000, China
4. School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
6. School of Pharmaceutical Science and Technology, Tianjin, China
5. Chinese Research Academy of Environmental Sciences, Beijing, 100000, China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Physical Chemistry
Analytical Chemistry
Industrial Chemistry and Chemical Engineering
Characterization and Evaluation Materials
Condensed Matter
Electronic and Computer Engineering - 出版者：Springer Berlin / Heidelberg
- ISSN：1433-0768
文摘
The anatase TiO2 films with controllable {001} highly reactive facets were fabricated on {001}SrTiO3 substrate with various total work pressure (TWP) by direct current facing-target magnetron sputtering (DCFTMS). X-ray diffraction (XRD), scanning electron microscopy (SEM), surface roughness tester (SRT), and X-ray photoelectron spectroscopy (XPS) were employed to confirmed the influence of different TWPs on the interface of TiO2/SrTiO3 heterostructured with epitaxial preferred growth of the anatase {001}TiO2 facet. The mechanisms of enhanced photoelectrochemical properties were explored by transient photocurrent (TP), current–potential (I–V), cyclic voltammetry (CV), polarization (Tafel), electrochemical impedance spectroscopy (EIS), and Mott–Schottky (M–S) curves, which can be ascribed to the formation of high-quality heterojunction between {001}TiO2 thin film and {001}SrTiO3 substrate, which suppress the recombination of photogenerated electron–hole pairs effectively.