Sb-Doped SnO2 Nanorods Underlayer Effect to the α-Fe2O3 Nanorods Sheathed with TiO2 for Enhanced Photoelectrochemical Water Splitting
Abstract
In this paper, a Sb-doped SnO2 (ATO) nanorod underneath an α-Fe2O3 nanorod sheathed with TiO2 for photoelectrochemical (PEC) water splitting is reported. The experimental results, corroborated with theoretical analysis, demonstrate that the ATO nanorod underlayer effect on the α-Fe2O3 nanorod sheathed with TiO2 enhances the PEC water splitting performance. The growth of the well-defined ATO nanorods is reported as a conductive underlayer to improve α-Fe2O3 PEC water oxidation performance. The α-Fe2O3 nanorods grown on the ATO nanorods exhibit improved performance for PEC water oxidation compared to α-Fe2O3 grown on flat fluorine-doped tin oxide glass. Furthermore, a simple and facile TiCl4 chemical treatment further introduces TiO2 passivation layer formation on the α-Fe2O3 to reduce surface recombination. Finally, as a result, these unique nanostructures show dramatically improved photocurrent density (139% higher than that of the pure hematite nanorods).
- Authors:
-
[1];
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Palacký Univ., Olomouc (Czech Republic). Regional Centre of Advanced Technologies and Materials. Dept. of Physical Chemistry
- Palacký Univ., Olomouc (Czech Republic). Regional Centre of Advanced Technologies and Materials. Dept. of Physical Chemistry
- Univ. of Ostrava (Czech Republic). Dept. of Physics
- Univ. of Erlangen-Nuremberg, Erlangen (Germany). Dept. of Materials Science and Engineering
- Palacký Univ., Olomouc (Czech Republic). Regional Centre of Advanced Technologies and Materials. Dept. of Physical Chemistry; Univ. of Erlangen-Nuremberg, Erlangen (Germany). Dept. of Materials Science and Engineering
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Palacký Univ., Olomouc (Czech Republic); Univ. of Ostrava (Czech Republic); Univ. of Erlangen-Nuremberg, Erlangen (Germany)
- Sponsoring Org.:
- USDOE; LANL Laboratory Directed Research and Development (LDRD) Program; Czech-Bavarian Grant; European Regional Development Fund (ERDF); Univ. of Ostrava (Czech Republic)
- OSTI Identifier:
- 1463497
- Report Number(s):
- LA-UR-18-21360
Journal ID: ISSN 1613-6810
- Grant/Contract Number:
- AC52-06NA25396; 8E15B009; CZ.02.1.01/0.0/0.0/15_003/0000416; IRP201557
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Small
- Additional Journal Information:
- Journal Volume: 14; Journal Issue: 19; Journal ID: ISSN 1613-6810
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY; α-Fe 2O 3 nanorods; DFT calculations; photoelectrochemical water splitting; Sb doping; SnO 2 nanorods
Citation Formats
Han, Hyungkyu, Kment, Stepan, Karlicky, Frantisek, Wang, Lei, Naldoni, Alberto, Schmuki, Patrik, and Zboril, Radek. Sb-Doped SnO2 Nanorods Underlayer Effect to the α-Fe2O3 Nanorods Sheathed with TiO2 for Enhanced Photoelectrochemical Water Splitting. United States: N. p., 2018.
Web. doi:10.1002/smll.201703860.
Han, Hyungkyu, Kment, Stepan, Karlicky, Frantisek, Wang, Lei, Naldoni, Alberto, Schmuki, Patrik, & Zboril, Radek. Sb-Doped SnO2 Nanorods Underlayer Effect to the α-Fe2O3 Nanorods Sheathed with TiO2 for Enhanced Photoelectrochemical Water Splitting. United States. https://doi.org/10.1002/smll.201703860
Han, Hyungkyu, Kment, Stepan, Karlicky, Frantisek, Wang, Lei, Naldoni, Alberto, Schmuki, Patrik, and Zboril, Radek. Sat .
"Sb-Doped SnO2 Nanorods Underlayer Effect to the α-Fe2O3 Nanorods Sheathed with TiO2 for Enhanced Photoelectrochemical Water Splitting". United States. https://doi.org/10.1002/smll.201703860. https://www.osti.gov/servlets/purl/1463497.
@article{osti_1463497,
title = {Sb-Doped SnO2 Nanorods Underlayer Effect to the α-Fe2O3 Nanorods Sheathed with TiO2 for Enhanced Photoelectrochemical Water Splitting},
author = {Han, Hyungkyu and Kment, Stepan and Karlicky, Frantisek and Wang, Lei and Naldoni, Alberto and Schmuki, Patrik and Zboril, Radek},
abstractNote = {In this paper, a Sb-doped SnO2 (ATO) nanorod underneath an α-Fe2O3 nanorod sheathed with TiO2 for photoelectrochemical (PEC) water splitting is reported. The experimental results, corroborated with theoretical analysis, demonstrate that the ATO nanorod underlayer effect on the α-Fe2O3 nanorod sheathed with TiO2 enhances the PEC water splitting performance. The growth of the well-defined ATO nanorods is reported as a conductive underlayer to improve α-Fe2O3 PEC water oxidation performance. The α-Fe2O3 nanorods grown on the ATO nanorods exhibit improved performance for PEC water oxidation compared to α-Fe2O3 grown on flat fluorine-doped tin oxide glass. Furthermore, a simple and facile TiCl4 chemical treatment further introduces TiO2 passivation layer formation on the α-Fe2O3 to reduce surface recombination. Finally, as a result, these unique nanostructures show dramatically improved photocurrent density (139% higher than that of the pure hematite nanorods).},
doi = {10.1002/smll.201703860},
journal = {Small},
number = 19,
volume = 14,
place = {United States},
year = {Sat Apr 14 00:00:00 EDT 2018},
month = {Sat Apr 14 00:00:00 EDT 2018}
}
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