Sonochemical fabrication of fluorinated mesoporous titanium dioxide microspheres
- School of Materials and Chemical Engineering, Jiangxi University of Science and Technology, 86 Hongqi Road, Ganzhou 341000, Jiangxi (China)
- Department of Chemistry, Center of Novel Functional Molecules and Environmental Science Programme, Chinese University of Hong Kong, Shatin, New Territories (Hong Kong)
A sonochemical-hydrothermal method for preparing fluorinated mesoporous TiO{sub 2} microspheres was developed. Formation of mesoporous TiO{sub 2} and doping of fluorine was achieved by sonication and then hydrothermal treatment of a solution containing titanium isopropoxide, template, and sodium fluoride. The as-synthesized TiO{sub 2} microspheres were characterized by X-ray diffraction (XRD), Fourier translation infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX) spectroscopy, photoluminescence spectroscopy (PL), and BET surface areas. The P123 template was removed completely during the hydrothermal and washing steps, which was different from the conventional calcination treatment. The as- synthesized TiO{sub 2} microspheres had good crystallinity and high stability. Results from the photocatalytic degradation of methylene blue (MB) showed that fluorination could remarkably improve the photocatalytic activity of titanium dioxide. - Graphical abstract: A novel method for preparing fluorinated mesoporous TiO{sub 2} microspheres was developed by a combined ultrasonic and hydrothermal treatment. The fluorinated TiO{sub 2} microspheres show high crystallinity, stability and enhanced photocatalytic activity.
- OSTI ID:
- 21370378
- Journal Information:
- Journal of Solid State Chemistry, Vol. 182, Issue 5; Other Information: DOI: 10.1016/j.jssc.2009.01.033; PII: S0022-4596(09)00036-X; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION SPECTROSCOPY
CALCINATION
FLUORINATION
HYDROTHERMAL SYNTHESIS
INFRARED SPECTRA
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
DECOMPOSITION
DIFFRACTION
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
HALOGENATION
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PYROLYSIS
SCATTERING
SPECTRA
SPECTROSCOPY
SYNTHESIS
THERMOCHEMICAL PROCESSES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS