Композиты из субмикронных сфер Y2O3 с функциональной основой наноразмерных модификаций диоксида титана: получение и характеризация

Composites anatase/Y2O3, η-TiO2/Y2O3, Degussa P25/Y2O3 and Hombifine/Y2O3 were prepared by simultaneous dispersion of Y2O3 and TiO2 powders in weakly alkaline aqueous media or dispersion of Y2O3 powders in acidic titania-containing hydrosols followed by special treatment. Initial reagents and composites were characterized by X-ray diffraction, IR spectroscopy, transmission and scanning electronic microscopy with X-ray spectral microanalysis.Впервые получены композиты анатаз/Y2O3, η-TiO2/Y2O3, Degussa P25/Y2O3 нанесением наноразмерных модификаций диоксида титана со структурами анатаза и η-модификации и Degussa P25 на субмикронные сферы Y2O3 путём совместного диспергирования порошков Y2O3 и TiO2 в слабощелочной водной среде либо диспергирования порошка Y2O3 вкислотном титансодержащем гидрозоле с последующей обработкой. Исходные вещества и композиты охарактеризованы методами рентгенографии, ИК-спектроскопии, просвечивающей и сканирующей электронной микроскопии с рентгеноспектральным микроанализом, низкотемпературной (-196°C) адсорбции азота

Composites on the basis of Y₂O₃ submicron spheres functionalized with nanosize titania: preparation and characterization

Composites anatase/Y2O3, η-TiO2/Y2O3, Degussa P25/Y2O3 and Hombifine/Y2O3 were prepared by simultaneous dispersion of Y2O3 and TiO2 powders in weakly alkaline aqueous media or dispersion of Y2O3 powders in acidic titania-containing hydrosols followed by special treatment. Initial reagents and composites were characterized by X-ray diffraction, IR spectroscopy, transmission and scanning electronic microscopy with X-ray spectral microanalysis

Novel Applications and Future Perspectives of Nanocomposites

As the present chapter of the book is located in the concluding section, it was important to highlight the main applications of composite materials focusing especially on applications, which exploit other peculiarities of the materials besides photocatalysis. This will be done, by introducing those materials and their composites that are most studied, or were found to exhibit interesting behavior. In many of the presented cases, the main structural, morphological, or optical property of the given composite will be discussed to understand its functioning mechanism, and its role in the current scientific approaches. Additionally, this chapter aims to give a perspective regarding the composite-based nanoscience, and points out important research directions for the further developments of composite materials