Particle and Aerosol Research Vol. 5, No. 1, March 2009 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Preparation of TiO2:Fe,V nanoparticles by flame spray pyrolysis and photocatalytic degradation of VOCs
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Abstracts
Fe- and V-doped titanium dioxide nanoparticles consisting of spherical primary nanoparticles were synthesized
from a mixed liquid precursor by using the flame spray pyrolysis. The effects of dopant concentration on the
powder properties such as morphology, crystal structure, and light adsorption were analyzed by TEM, XRD, and
UV-Vis spectrophotometer, respectively. As the V/Ti molar ratio increased, pure anatase particles were synthesized.
On the contrary, rutile phase particles were synthesized as the Fe/Ti ratio increased. Photocatalytic property
of as-prepared TiO2:Fe,V nanoparticles was investigated by measuring the removal efficiency for volatile
organic compounds (VOCs) under the irradiation of visible light. After 2 hrs under visible light, the removal efficiencies
of benzene, p-xylene, ethylbenzene, and toluene were reached to 21.9%, 21.4%, 19.8% and 17.6%
respectively.
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