Back to Search
Start Over
Thin-Layer Fe2TiO5 on Hematite for Efficient Solar Water Oxidation.
- Source :
-
ACS nano [ACS Nano] 2015 May 26; Vol. 9 (5), pp. 5348-56. Date of Electronic Publication: 2015 Apr 21. - Publication Year :
- 2015
-
Abstract
- A thin Fe2TiO5 layer was produced on hematite either by evaporating a TiCl4 solution on FeOOH or by a simple HF-assisted Ti treatment of FeOOH, both followed by annealing. The prepared Fe2TiO5-hematite heterostructure showed a significant enhancement in photocurrent density compared to that of the pristine hematite. For example, the sample after HF-assisted Ti treatment exhibited a significantly enhanced photocurrent of 2.0 mA/cm(2) at 1.23 V vs RHE. Moreover, the performance of the Fe2TiO5-hematite heterostructure can be further improved by coupling with Co-Pi catalysts, achieving a higher photocurrent of 2.6 mA/cm(2) at 1.23 V vs RHE. Synchrotron-based soft X-ray absorption spectroscopy analyses clearly revealed the existence of an Fe2TiO5 structure on hematite forming a heterojunction, which reduced the photogenerated hole accumulation and then improved the performance.
Details
- Language :
- English
- ISSN :
- 1936-086X
- Volume :
- 9
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- ACS nano
- Publication Type :
- Academic Journal
- Accession number :
- 25885275
- Full Text :
- https://doi.org/10.1021/acsnano.5b01028