Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 633, Issue -, Pages 83-91Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.02.023
Keywords
TiO2 nanotube arrays; PbS; Sb doped SnO2; Photoelectrocatalysis; Hydrogen production
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Funding
- National Natural Science Foundation of China [21307098]
- China Postdoctoral Science Foundation [2013M532053]
- Fundamental Research Funds for the Central Universities of China
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The novel PbS sensitized Sb-SnO2/TiO2 nanotube arrays (NTAs) composite electrode (PbS/Sb-SnO2/TiO2 NTAs) was fabricated by microwave combined with sonication-assisted successive ionic layer adsorption and reaction technique (S-SILAR). The obtained electrodes were characterized by field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-Vis diffuse reflectance absorption spectra techniques. Enhanced photocurrent (15.52 mA/cm(2)) of the PbS/Sb-SnO2/TiO2 NTAs electrode was observed and can be attributed to the facile photo-generated electrons transfer and enhanced charge separation efficiency. Furthermore, the PbS/Sb-SnO2/TiO2 NTAs composite electrode shows a higher H-2 production rate than the Sb-SnO2/TiO2 NTAs electrode and PbS/TiO2 NTAs electrode. The results indicate that the PbS/SbSnO2/TiO2 NTAs electrode is a promising photoanode in visible photocatalytic water splitting. (C) 2015 Elsevier B.V. All rights reserved.
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