TY - JOUR
T1 - Synthesis of Cr and La-codoped SrTiO3 nanoparticles for enhanced photocatalytic performance under sunlight irradiation
AU - Tonda, Surendar
AU - Kumar, Santosh
AU - Anjaneyulu, Oruganti
AU - Shanker, Vishnu
PY - 2014/12/31
Y1 - 2014/12/31
N2 - In this study, we report a facile polymeric citrate strategy for the synthesis of Cr,La-codoped SrTiO3
nanoparticles. The synthesized samples were well characterized by
various analytical techniques. The UV-vis DRS studies reveal that the
absorption edge shifts towards the visible light region after doping
with Cr, which is highly beneficial for absorbing the visible light in
the solar spectrum. More attractively, codoping with La exhibits greatly
enhanced photocatalytic activity for the degradation of Rhodamine B
under sunlight irradiation. The optimum photocatalytic activity at 1
atom% of Cr,La-codoped SrTiO3 nanoparticles is almost 6 times higher than that of pure SrTiO3 nanoparticles and 3 times higher than that of Cr-doped SrTiO3
nanoparticles. The high photocatalytic performance in the present
photocatalytic system is due to codoping with La, which acts as a most
effective donor for stabilizing Cr3+ in Cr,La-codoped SrTiO3
nanoparticles. More importantly, the synthesized photocatalysts possess
high reusability. A proposed mechanism for the enhanced photocatalytic
activity of Cr,La-codoped SrTiO3 nanoparticles
was also investigated by trapping experiments. Therefore, our results
not only demonstrate the highly efficient visible light photocatalytic
activity of the Cr,La-codoped SrTiO3
photocatalyst, but also enlighten the codoping strategy in the design
and development of advanced photocatalytic materials for energy and
environmental applications.
AB - In this study, we report a facile polymeric citrate strategy for the synthesis of Cr,La-codoped SrTiO3
nanoparticles. The synthesized samples were well characterized by
various analytical techniques. The UV-vis DRS studies reveal that the
absorption edge shifts towards the visible light region after doping
with Cr, which is highly beneficial for absorbing the visible light in
the solar spectrum. More attractively, codoping with La exhibits greatly
enhanced photocatalytic activity for the degradation of Rhodamine B
under sunlight irradiation. The optimum photocatalytic activity at 1
atom% of Cr,La-codoped SrTiO3 nanoparticles is almost 6 times higher than that of pure SrTiO3 nanoparticles and 3 times higher than that of Cr-doped SrTiO3
nanoparticles. The high photocatalytic performance in the present
photocatalytic system is due to codoping with La, which acts as a most
effective donor for stabilizing Cr3+ in Cr,La-codoped SrTiO3
nanoparticles. More importantly, the synthesized photocatalysts possess
high reusability. A proposed mechanism for the enhanced photocatalytic
activity of Cr,La-codoped SrTiO3 nanoparticles
was also investigated by trapping experiments. Therefore, our results
not only demonstrate the highly efficient visible light photocatalytic
activity of the Cr,La-codoped SrTiO3
photocatalyst, but also enlighten the codoping strategy in the design
and development of advanced photocatalytic materials for energy and
environmental applications.
UR - http://pubs.rsc.org/en/Content/ArticleLanding/2014/CP/C4CP02963A#!divAbstract
U2 - 10.1039/c4cp02963a
DO - 10.1039/c4cp02963a
M3 - Article
C2 - 25273220
SN - 1463-9076
VL - 16
SP - 23819
EP - 23828
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
IS - 43
ER -