title: In situ growth of lamellar ZnTiO3 nanosheets on TiO2 tubular array with enhanced photocatalytic activity.
abstract: We report a self-sacrificed in situ growth design toward preparation of ZnTiO3-TiO2 heterojunction structure. Highly reactive zinc oxide colloidal particles derived by laser ablation in liquids can react with TiO2 nanotubes to form a lamellar ZnTiO3 nanosheet structure in a hydrothermal-treatment process. Such hybrid structural product was characterized by X-ray diffraction, scanning and transmission electron microscopy, UV-vis diffuse reflection spectroscopy and X-ray photoelectron spectroscopy. The enhanced photocatalytic activity of the hybrid structure toward degradation of methyl orange (MO) and pentachlorophenol (PCP) molecules was demonstrated and compared with single phase TiO2, as a result of the efficient separation of light excited electrons and holes at the hetero-interfaces in the two semiconductors.
authors.affiliation: Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, PR China. chliang@issp.ac.cn.
authors.forename: Yunyu
authors.initials: Y
authors.lastname: Cai
authors.forename: Yixing
authors.initials: Y
authors.lastname: Ye
authors.forename: Zhenfei
authors.initials: Z
authors.lastname: Tian
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Yishu
authors.initials: Y
authors.lastname: Liu
authors.forename: Changhao
authors.initials: C
authors.lastname: Liang
mesh_terms: D001391:Azo Compounds / Q000737:chemistry; D002384:Catalysis; D003102:Colloids / Q000737:chemistry; D008027:Light; D043942:Nanotubes / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D010416:Pentachlorophenol / Q000737:chemistry; D010782:Photolysis; D014025:Titanium / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D003102:Colloids; D010087:Oxides; C009495:titanium dioxide; C100258:methyl orange; D014025:Titanium; D010416:Pentachlorophenol; D015034:Zinc Oxide