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An anatase TiO2 nanosheet array (TNSA) assembled by {116} facet-oriented nanocrystallites with {116} facets parallel to the surface is synthesized directly on a fluorine-doped tin oxide substrate via a two-step process, and exhibits 50% higher photocatalytic activity than {001} facet-oriented TNSA. The precursor and TNSA are both suggested to be grown via the “oriented attachment” mechanism.
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Li et al. (2012) studied this question.
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