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Retracted : Controlled Synthesis of Hierarchically Mesoporous TiO 2 Hollow Microspheres with High Photocatalytic Activity
Author(s) -
Junqi Li,
Defang Wang,
Zuoli He,
Zhenfeng Zhu
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04264.x
Subject(s) - photocatalysis , mesoporous material , anatase , x ray photoelectron spectroscopy , materials science , scanning electron microscope , transmission electron microscopy , chemical engineering , diffuse reflectance infrared fourier transform , nanotechnology , spectroscopy , catalysis , chemistry , composite material , organic chemistry , physics , quantum mechanics , engineering
Well‐crystallized anatase‐phase F‐TiO 2 hollow microspheres have been synthesized via a facile combination of sol–gel and solvothermal process. The microspheres exhibited a unique three‐dimensional hierarchical architecture and demonstrated a significantly improved photocatalytic performance. The resulting sample was characterized by X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, X‐ray photoelectron spectroscopy, N 2 adsorption, and an UV‐Vis diffuse reflectance spectroscopy. On the basis of characterization results, we found that the excellent performances of the mesoporous F‐TiO 2 hollow microspheres in photocatalytic activities can be attributed to the combined effects of several factors, namely, the surface fluorination, the existence of accessible mesopores channels, and the increased light‐harvesting abilities.