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Synthesis of {100} Facet Dominant Anatase TiO 2 Nanobelts and the Origin of Facet‐Dependent Photoreactivity
Author(s) -
Pan Feng,
Wu Kai,
Li Hexing,
Xu Guoqin,
Chen Wei
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201403866
Subject(s) - anatase , facet (psychology) , materials science , photocatalysis , anisotropy , chemical engineering , wavelength , nanotechnology , optoelectronics , optics , chemistry , catalysis , psychology , physics , social psychology , biochemistry , personality , big five personality traits , engineering
Sword‐like anatase TiO 2 nanobelts exposed with 78 % clean {100} facets were synthesized and the facet‐dependent photoreactivity of anatase TiO 2 was investigated. By quantitative comparison with the reference {001} facets, the {100} facets possessed about ten‐times higher active sites density than that on {001} facets, resulting in higher photoreaction efficiency. After the active sites density normalization, the {100} and {001} facets exhibited distinct wavelength‐dependent photocatalytic performance, attributed to the anisotropic electronic structures in TiO 2 crystals.