Journal
CRYSTENGCOMM
Volume 18, Issue 3, Pages 496-503Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ce01905b
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Funding
- National Natural Science Foundation of China [51472003, 51272001]
- National Key Basic Research Program [2013CB632705]
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Single crystal TiO2 nanosheet array films with dominant {001} facets were synthesized on FTO by a hydrothermal method. A simple strategy for the selective deposition of CdS nanoparticles on the low energy {101} facets by controlling the F content on the surface of TiO2 nanosheets is developed. For CdS/TiO2, under light irradiation, the photo-generated electrons flow from the {001} to {101} facets; meanwhile, the photo-generated electrons transfer from the CdS nanoparticles to the TiO2 nanosheets. The deposition of CdS nanoparticles on the {101} facets will shorten the pathways that the electrons must travel. Herein, the synergistic effect of the selective deposition of CdS nanoparticles on the {101} facets of TiO2 nanosheets and the different band edge positions of the {001} and {101} facets would facilitate the spatial separation of electrons and holes on different facets, leading to enhanced photoelectronic performance.
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