Взаимодействие оксидов титана с гидроксидом натрия в гидротермальных условиях

Sodium titanates were obtained by hydrothermal treatment using titanium tetrabutoxide (ТBT), titanium tetroisopropoxide (TIPT), hydrated titanium dioxide (prepared by hydrolysis of titanium alkoxide) or air-dried TiO2 sol with a molar ratio of TBT/TIPT/TiO2: NaOH equal to 1:10–80, at the temperature 130–180 °C and treatment time 24–72 h. Samples were characterized by the adsorption method, X-ray phase analysis, scanning electron microscopy. The photocatalytic properties of nanostructured titanate in the H-form in the process of Rhodamine FL–BM photodegradation under UV-irradiation (K = 0.03–0.05 min–1), as well as the electrorheological properties, were evaluated. Partially hydrated sodium titanates as a filler of the electrorheological dispersion (the filler content of dispersion was 5 %) exhibited the shear stress of 50–60 Pa and the leakage current density of 1.0–1.5 μA/cm2 at an electric field strength of E = 4 kV/cm at a shear rate of 17.1 s–1.Титанаты натрия получали с использованием тетрабутоксида титана (ТБТ), тетроизопропоксида титана (ТИПТ), гидратированного диоксида титана (полученного гидролизом алкоксида титана) или воздушно высушенного золя TiO2 методом гидротермальной обработки при молярном отношении (ТБТ, ТИПТ, TiO2) : NaOH, равном 1: (10–80), температуре 130–180 °С и времени 24–72 ч. Свойства полученных образцов охарактеризованы с использованием адсорбционного метода, рентгенофазового анализа, растровой электронной микроскопии. Оценивали фотокаталитические свойства наноструктурированного титаната в Н-форме по реакции разложения Родамина FL–BМ под действием УФ-излучения (К = 0,03–0,05 мин–1) и электрореологические свойства, согласно которым полученный частично гидролизованный титанат натрия демонстрирует в составе 5 % по наполнителю электрореологических дисперсий величину напряжения сдвига 50–60 Па и плотности токов утечки 1,0–1,5 мкА/см2 при напряженности электрического поля Е = 4 кВ/см и скорости сдвига 17,1 с–1

Photosensitive sulphide heterostructures obtained by using Successive Ionic Layer Adsorption and Reaction on planar and profiled substrates

В данной работе были представлены результаты получения сульфидных гетероструктур ZnS / SnS[x] с использованием метода последовательной ионной адсорбции и реакции на плоских подложках из ITO / стекла и профилированного анодного оксида алюминия, а также подложек из оксида тантала. Расслоение ZnS / SnS[x] на подложку ITO / стекло осуществлялось в режиме роста монослойных пленок

Photosensitive sulphide heterostructures obtained by using Successive Ionic Layer Adsorption and Reaction on planar and profiled substrates

The photosensitive heterostructures of ZnS/SnSx were formed by Successive Ionic Layer Adsorption and Reaction method on the nanoporous anodic alumina matrixes, on tantalum oxide nanocolumns and on planar ITO/glass substrate. Investigation of morphology of ZnS/SnSx films layered on the substrates with different surfaces has shown which the layering of functional layers has dominated horizontal deposition mechanism. It has been established that the layering of sulfides on anodic alumina proceeds with a higher rate than the layering on ITO/glass. Also ZnS/SnSx heterostructure formed on nanoporous anodic alumina has pronounced interface between layers of sulphide compounds while in the heterostructure on ITO such interface is missing. The layering of ZnS/SnSx heterostructure on the tantalum oxide nanocolumns occurs locally. ZnS/SnSx/ITO/glass structure has the electrical resistance in the order of 80-140 Ohm. During illumination of the ZnS/SnSx/ITO/glass by white light with radiation power about 11 W in structure is formed of photoelectromotive force about 230 mV

Photosensitive heterostructures based on island-grid films and nanoporous matrices and sulphide nanostructures

The photosensitive heterostructures of ZnS/SnSx systems deposited onto island-grid films and nanoporous matrices by ion layering were investigated by scanning electron microscopy and photovoltaic measurements. The obtained nanostructured heterostructures were characterized by low electrical resistance of 140-80 Ohm with the semiconductor character of the temperature dependence have shown photoelectric EMF of about 230 mV

Matrix metal oxide films formed on porous anodic alumina

The metal oxide films of SnxZnyOz and SnxMoyOz systems deposited onto anodic alumina matrixes by chemical and ion layering from an aqueous solutions were characterized by scanning electron microscopy, Raman spectroscopy and electron probe X-ray microanalysis. The obtained matrix films had reproducible composition and structure and possessed certain morphological characteristics and properties

Evolution of the SONIX Software Package for the YuMO Spectrometer at the IBR-2 Reactor

The software package for the YuMO spectrometer has been updated. The MS DOS programs used before the updating are compared to the similar new programs operating in the OS-9 environment. The merits and demerits of each program are discussed. The main features of the new software are described, and the results of the long-term operation of the new software package are analyzed. It is shown that upgrading the software has improved spectrometer control