Synthesis and photocatalytic activity of quasi-one-dimensional (1-D) solid solutions Ti1-xMxO2-2x/2 (M(III)= Fe(III), Ce(III), Er(III), Tb(III), Eu(III), Nd(III) and Sm(III), 0≤x≤0.1)
Abstract
Quasi-one-dimensional (1–D) solid solutions Ti1−xMxO2−x/2 (M(III)=Fe(III), Ce(III), Er(III), Tb(III), Eu(III), Nd(III), Sm(III), 0 < x ≤ 0.1) with the anatase structure have been synthesized by heating glycolate Ti1−xMx(OCH2CH2O)2−x/2 in air at a temperature above 450 ◦C. A method was proposed for the production of iron-and carbon-doped titanium dioxide with the anatase structure Ti1−xFexO(2−x/2)−yCy and of composites based thereon containing an excessive carbon content. It was shown that the oxide solid solutions exhibit photocatalytic activity in the hydroquinone photooxidation reaction during irradiation in the ultraviolet spectrum. A correlation was established between the hydroquinone oxidation rate and the concentration of the substituting ions ‘M’ in the catalyst. In the framework of the theory of ion-covalent binary solid solutions, a correlation was found between the energy of the photocatalytic reaction and the estimated mixing enthalpy of binary solid solutions formation.
Supporting agencies: The work was supported by the RFBR (projects 12-03-00453-, 13-03-00265-a), RFBR- Urals (project 13-03-96061), the Presidium of RAS (projects 12-P-3-1915, 12-U-3-1009 and 12- T-3-1009), the Presidium of RAS (Urals Branch), the Science school (project SS-5669.2012.3).
About the Authors
E. V. Polyakov
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
str. Pervomajskaya, 91, 620990, Ekaterinburg
tel.: +7 343 3744814, fax.: +7 343 3744495
V. N. Krasilnikov
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
str. Pervomajskaya, 91, 620990,Ekaterinburg
O. I. Gyrdasova
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
str. Pervomajskaya, 91, 620990,Ekaterinburg
L. Yu. Buldakova
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
str. Pervomajskaya, 91, 620990,Ekaterinburg
M. Yu. Yanchenko
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
str. Pervomajskaya, 91, 620990,Ekaterinburg
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Review
For citations:
Polyakov E.V., Krasilnikov V.N., Gyrdasova O.I., Buldakova L.Yu., Yanchenko M.Yu. Synthesis and photocatalytic activity of quasi-one-dimensional (1-D) solid solutions Ti1-xMxO2-2x/2 (M(III)= Fe(III), Ce(III), Er(III), Tb(III), Eu(III), Nd(III) and Sm(III), 0≤x≤0.1). Nanosystems: Physics, Chemistry, Mathematics. 2014;5(4):553-563.
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