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Статья

Effect of methylene blue modification on the structural, morphological, and photocatalytic properties of nanosized η-TiO2

Crystallography reports. 2015. Vol. 60. No. 3. P. 406-417.
Obolenskaya L., Zaporozhets M., Kuzmicheva G., Savinkina E., Podbelskiy V. V., Amarantov S., Sadovskaya N., Prokudina N., Avilov A., Nikolajchik V.

The structural and morphological features of samples containing titanium dioxide, obtained by the sulfate method in the presence of methylene blue dye MeB (sample with η-TiO2) and in its absence (sample with anatase), have been determined using a complex of analytical methods. For the sample with η-TiO2, the sizes of titanium dioxide crystallites (5.0(2) nm) are smaller than the nanoparticle sizes (5.5–9.0 nm), which does not exclude their defect structure. This sample exhibited a higher tendency of nanoparticles to agglomeration (the presence of strong bonds between nanoparticles) and a low tendency to aggregation (the presence of weak bonds). It is shown that a MeB-modified sample with η-TiO2 has high photocatalytic activity in the visible spectral range in the model reaction of methyl orange dye decomposition. © 2015, Pleiades Publishing, Inc.