The Influence of La Doping
on Structural, Optical,
and Photocatalytic Properties of TiO 2
in Dyes Destruction and Hydrogen
Evolution
T. A. Khalyavka, V. V. Shymanovska, E. V. Manuilov, N. D. Shcherban,
O. Y. Khyzhun, G. V. Korzhak, and V. V. Permyakov
1 Introduction
Currently, the photocatalytic properties of titanium dioxide (TiO 2 ) and TiO 2 -based
nanocomposites in the destruction of organic substances are actively being studied.
Titanium dioxide is a wide-gap semiconductor and is used as photocatalyst due to its
high photocatalytic activity and chemical stability. TiO 2 exhibits high photoactivity
in various reactions under UV irradiation [1–7].
To increase the photocatalytic activity of titanium dioxide and to reduce the
bandgap, its doping is applied. Under the action of irradiation, electrons and holes
are generated and participate in redox reactions with adsorbed molecules at TiO 2
surface. Dopants can trap photoexcited electrons before they recombine with holes.
The efficiency of a photocatalyst is determined by the fact, how efficiently electrons and holes are involved in the oxidation and reduction reactions prior to their
T. A. Khalyavka (B)
Institute for Sorption and Problems of Endoecology, NAS of Ukraine, General Naumov str., 13,
Kyiv 03164, Ukraine
e-mail: takhalyavka@ukr.net
V. V. Shymanovska · E. V. Manuilov
Institute of Physics, NAS of Ukraine, 46 Nauki Ave, Kyiv 03028, Ukraine
N. D. Shcherban · G. V. Korzhak
L.V. Pisarzhevskii Institute of Physical Chemistry, NAS of Ukraine, Prospekt Nauky, 31, Kyiv
03028, Ukraine
O. Y. Khyzhun
Institute for Problems of Materials Science, NAS of Ukraine, 3, Krzhizhanovsky str., Kyiv 03142,
Ukraine
V. V. Permyakov
Institute of Geological Sciences, NAS of Ukraine, O. Gonchar str., 55-B, Kyiv 01054, Ukraine
© Springer Nature Switzerland AG 2021
O. Fesenko and L. Yatsenko (eds.), Nanomaterials and Nanocomposites,
Nanostructure Surfaces, and Their Applications, Springer Proceedings
in Physics 246, https://doi.org/10.1007/978-3-030-51905-6_27
361
on Structural, Optical,
and Photocatalytic Properties of TiO 2
in Dyes Destruction and Hydrogen
Evolution
T. A. Khalyavka, V. V. Shymanovska, E. V. Manuilov, N. D. Shcherban,
O. Y. Khyzhun, G. V. Korzhak, and V. V. Permyakov
1 Introduction
Currently, the photocatalytic properties of titanium dioxide (TiO 2 ) and TiO 2 -based
nanocomposites in the destruction of organic substances are actively being studied.
Titanium dioxide is a wide-gap semiconductor and is used as photocatalyst due to its
high photocatalytic activity and chemical stability. TiO 2 exhibits high photoactivity
in various reactions under UV irradiation [1–7].
To increase the photocatalytic activity of titanium dioxide and to reduce the
bandgap, its doping is applied. Under the action of irradiation, electrons and holes
are generated and participate in redox reactions with adsorbed molecules at TiO 2
surface. Dopants can trap photoexcited electrons before they recombine with holes.
The efficiency of a photocatalyst is determined by the fact, how efficiently electrons and holes are involved in the oxidation and reduction reactions prior to their
T. A. Khalyavka (B)
Institute for Sorption and Problems of Endoecology, NAS of Ukraine, General Naumov str., 13,
Kyiv 03164, Ukraine
e-mail: takhalyavka@ukr.net
V. V. Shymanovska · E. V. Manuilov
Institute of Physics, NAS of Ukraine, 46 Nauki Ave, Kyiv 03028, Ukraine
N. D. Shcherban · G. V. Korzhak
L.V. Pisarzhevskii Institute of Physical Chemistry, NAS of Ukraine, Prospekt Nauky, 31, Kyiv
03028, Ukraine
O. Y. Khyzhun
Institute for Problems of Materials Science, NAS of Ukraine, 3, Krzhizhanovsky str., Kyiv 03142,
Ukraine
V. V. Permyakov
Institute of Geological Sciences, NAS of Ukraine, O. Gonchar str., 55-B, Kyiv 01054, Ukraine
© Springer Nature Switzerland AG 2021
O. Fesenko and L. Yatsenko (eds.), Nanomaterials and Nanocomposites,
Nanostructure Surfaces, and Their Applications, Springer Proceedings
in Physics 246, https://doi.org/10.1007/978-3-030-51905-6_27
361