Journal
CHEMPLUSCHEM
Volume 79, Issue 8, Pages 1159-1166Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201402036
Keywords
hydrogen fluoride; hydrothermal synthesis; nanostructures; photochemistry; titanates
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Funding
- College of Arts and Sciences
- University of Missouri-Kansas City
- University of Missouri Research Board
- National Natural Science Foundation of China [21071096]
- Taishan Overseas Scholar Program [tshw20091005]
- Shandong Natural Science Foundation [JQ201118]
- National Science Foundation [DMR-0821159]
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The influence of the amount of hydrogen fluoride (HF) on product formation from the hydrothermal reaction of titanium butoxide and concentrated HF is investigated. Low HF contents lead to a preference for the formation of small TiO2 nanoparticles, medium HF contents lead to a preference for TiO2 nanosheets, and high HF contents lead to a preference for large TiOF2 particles. Meanwhile, TiO2 nanosheets display higher activity in photocatalytic hydrogen generation than that of smaller TiO2 nanoparticles; this demonstrates the higher photocatalytic activity of (001) facets over others. The synergistic effect between TiO2 nanosheets and TiOF2 particles could improve the performance of TiO2 nanosheets owing to possible charge separation over their interface, although TiOF2 particles themselves barely show any activity.
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