Влияние модифицирования метиленовым синим на структурные, морфологические и фотокаталитические свойства наноразмерного диоксида титана η-модификации

Кристаллография. 2015. Т. 60. № 3. С. 455–466.

Оболенская Л. Н., Запорожец М. А., Кузьмичева Г. М., Савинкина Е. В., Podbelskiy V., Амарантов С. В., Садовская Н. В., Прокудина Н. А., Авилов А. С., Николайчик В. И.

The structural and morphological features of samples containing titanium dioxide, obtained by the sulfate method in the presence of methylene blue dye МеВ (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–.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 МеВ-modified sample with η-TiO2 has high photocatalytic activity in the visible spectral range in the model reaction of methyl orange dye decomposition.

Keywords: электронная микроскопия, модификация, рентгенография, modification, sulfate method, nano-sized titania, anatase, X-ray study, diffraction patterns modeling of two-phase mixtures, small-angle X-ray scattering, electron diffraction, electron microscopy, methylene blue modified, photocatalytic activity in the visible spectral range, сульфатный метод, нанодиоксид титана, анатаз, моделирование дифрактограмм двухфазных образцов, малоугловое рентгеновское рассеяние, электронная дифракция, модификация метиленовым голубым, фототатализ в видимом свете