Open AccessSol-Gel-Hydrothermal Synthesis of the HeterostructuredTiO 2 / N Bi 2 WO 6
Author(s) -
Jiang Zhang,
ZhengHong Huang,
Yong Xu,
Feiyu Kang
Publication year - 2011
Publication title -
international journal of photoenergy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.426
H-Index - 51
eISSN - 1687-529X
pISSN - 1110-662X
DOI - 10.1155/2012/469178
Subject(s) - photocatalysis , high resolution transmission electron microscopy , materials science , rhodamine b , diffuse reflectance infrared fourier transform , hydrothermal circulation , scanning electron microscope , spectroscopy , visible spectrum , transmission electron microscopy , hydrothermal synthesis , analytical chemistry (journal) , nanotechnology , chemical engineering , optoelectronics , chemistry , composite material , physics , catalysis , organic chemistry , quantum mechanics , engineering
The heterostructured TiO2/N-Bi2WO6 composites were prepared by a facile sol-gel-hydrothermal method. The phase structures, morphologies, and optical properties of the samples were characterized by using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive spectroscopy (EDS), and UV-vis diffuse reflectance spectroscopy. The photocatalytic activities for rhodamine B of the as-prepared products were measured under visible and ultraviolet light irradiation at room temperature. The TiO2/N-Bi2WO6 composites exhibited much higher photocatalytic performances than TiO2 as well as Bi2WO6. The enhancement in the visible light photocatalytic performance of the TiO2/N-Bi2WO6 composites could be attributed to the effective electron-hole separations at the interfaces of the two semiconductors, which facilitate the transfer of the photoinduced carriers
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