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Journal of Materials Science and Nanotechnology | Volume 3
February 25-26, 2019 | Paris, France
Materials Science and Engineering
2
nd
International Conference on
Ultrasonic synthesis of Fe-doped, N-doped and undoped titanium dioxide particles
Innocent Pumure
University of Central Missouri, USA
W
e used focused probe sonication to synthesize Titanium
dioxide particles using varying concentrations of F
3+
and Fe
2+
for the Fe
-
doped TiO
2
and varying concentrations
of melamine, a nitrogen rich source, for N-doped TiO
2
. All
samples were analyzed using Raman spectroscopy. Rutile
phase of TiO
2
was obtained for all Fe-doped particles and
the anatase form was obtained for all N–doped TiO
2
. The
ultrasonically synthesized particles were centrifuged and
then incinerated in a muffle furnace at 650
o
C before analysis.
Extended periods of direct and continuous bath and probe
ultrasonication without incineration of undoped TiO
2
produced the rutile phase only and no anatase form was
observed. The rutilephasewas produced after 40minuteswith
probe sonication and after 90 minutes with bath sonication.
The photocatalytic utility of the synthesized particles was
initially tested using the degradation of Rhodamine B when
mixed with either doped TiO
2
or undoped TiO
2
and then
irradiated with natural sunlight without stirring. A UV-visible
absorption-scattering method was used to approximate
the electronic band gaps of the synthesized particles and
the assessment of the deviation from the expected 3.2 eV.
Speaker Biography
Innocent Pumure is currently working as an Associate Professor in the chemistry
department of University of Missouri, USA. His expertise is in the field of water
quality, extraction, mining, leaching, chemometrics, and vibrational spectroscopy.
e:
pumure@ucmo.edu