Synthesis and photocatalytic performance of Graphene-Mn doped Titania
Eva Zeqiraj
1,5
, Natda Wetchakun
2
, Burapat Inceesungvorn
3
, Sukon Phanichphant
4
George Kiriakidis
1,5
, Vassilios Binas
1,5
1
Department of Physics, University of Crete, Heraklion, Greece
2
Department of Physics and Materials Science, Faculty of Science, Chiang Mai University
50200, Thailand
3
Department of Chemistry, Faculty of Science, Chiang Mai University 50200, Thailand
4
Materials Science Research Center, Faculty of Science, Chiang Mai University 50200, Thailand
5
Institute of Electronic Structure and Laser, Foundation for Research and Technology, Heraklion
Greece
E-mail
Titanium dioxide (TiO2) has been widely studied particularly since the discovery of its
photocatalytic properties by Fujishima and Honda in 1972. As a catalyst, TiO2 nanomaterials are
very stable, nontoxic, cheap and have high photocatalytic reactivity in the elimination of
pollutants in air and water. A very important application of TiO2 photocatalysts is in the
purification of indoor and outdoor air.
In this work, TiO2 nanoparticles were synthesized by the modified sol-gel method and the Mn
doping was performed using the impregnation method. Graphene (GP) was introduced into the
Mn doped TiO2 spherical nanoparticles in order to improve the photocatalytic activity. The GP-
Mn doped TiO2 were characterized by X- ray diffractometry, scanning electron microscopy
(SEM), transmission electron microscopy (TEM), Raman spectroscopy. The photocatalytic
activity of the samples was examined via methylene blue and Rhodamine B degradation with
Xenon Lamp.
PS2 15
-209-
