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Title: Sb-Doped SnO2 Nanorods Underlayer Effect to the α-Fe2O3 Nanorods Sheathed with TiO2 for Enhanced Photoelectrochemical Water Splitting

Journal Article · · Small
ORCiD logo [1];  [2];  [3];  [4];  [2];  [5];  [2]
  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
  2. Palacký Univ., Olomouc (Czech Republic). Regional Centre of Advanced Technologies and Materials. Dept. of Physical Chemistry
  3. Univ. of Ostrava (Czech Republic). Dept. of Physics
  4. Univ. of Erlangen-Nuremberg, Erlangen (Germany). Dept. of Materials Science and Engineering
  5. 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
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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).

Research Organization:
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 Organization:
USDOE; LANL Laboratory Directed Research and Development (LDRD) Program; Czech-Bavarian Grant; European Regional Development Fund (ERDF); Univ. of Ostrava (Czech Republic)
Grant/Contract Number:
AC52-06NA25396; 8E15B009; CZ.02.1.01/0.0/0.0/15_003/0000416; IRP201557
OSTI ID:
1463497
Report Number(s):
LA-UR-18-21360
Journal Information:
Small, Vol. 14, Issue 19; ISSN 1613-6810
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 58 works
Citation information provided by
Web of Science

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Cited By (11)

Three Birds, One-Stone Strategy for Hybrid Microwave Synthesis of Ta and Sn Codoped Fe 2 O 3 @FeTaO 4 Nanorods for Photo-Electrochemical Water Oxidation journal January 2019
Perowskitoxid‐Elektroden zur leistungsstarken photoelektrochemischen Wasserspaltung journal August 2019
Perovskite Oxide Based Electrodes for High‐Performance Photoelectrochemical Water Splitting journal August 2019
Construction of CdSe@TiO 2 core‐shell nanorod arrays by electrochemical deposition for efficient visible light photoelectrochemical performance journal July 2019
Highly Ordered N‐Doped Carbon Dots Photosensitizer on Metal–Organic Framework‐Decorated ZnO Nanotubes for Improved Photoelectrochemical Water Splitting journal August 2019
Photoelectrochemical water oxidation in α-Fe2O3 thin films enhanced by a controllable wet-chemical Ti-doping strategy and Co–Pi co-catalyst modification journal November 2019
Sn-doped 3D ATO inverse opal/hematite hierarchical structures: facile fabrication and efficient photoelectrochemical performance journal January 2018
A photoelectrochemical immunosensor based on CdS/CdTe-cosensitized SnO 2 as a platform for the ultrasensitive detection of amyloid β-protein journal January 2020
Hematite nanorod arrays top-decorated with an MIL-101 layer for photoelectrochemical water oxidation journal January 2019
Design of noble metal free hierarchical VS 2 onto WO 3 nanoflakes as an effective heterojunction strategy for enhanced photoelectrochemical water oxidation journal January 2019
Decreased Surface Photovoltage of ZnO Photoanode Films via Optimal Annealing Temperature for Enhanced Photoelectrochemical Performance journal January 2019

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Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
α-Fe 2O 3 nanorods
DFT calculations
photoelectrochemical water splitting
Sb doping
SnO 2 nanorods