Open AccessInteraction of titanium oxide with sodium hydroxide at hydrothermal conditions
Author(s) -
А. Н. Мурашкевич
Publication year - 2020
Publication title -
vescì nacyânalʹnaj akadèmìì navuk belarusì. seryâ hìmìčnyh navuk
Language(s) - English
Resource type - Journals
eISSN - 2524-2342
pISSN - 1561-8331
DOI - 10.29235/1561-8331-2020-56-2-150-157
Subject(s) - materials science , titanium , rhodamine b , alkoxide , titanate , titanium dioxide , chemical engineering , photodegradation , sodium hydroxide , photocatalysis , scanning electron microscope , titanium oxide , nuclear chemistry , inorganic chemistry , composite material , chemistry , catalysis , organic chemistry , metallurgy , ceramic , engineering
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 TiO 2 sol with a molar ratio of TBT/TIPT/TiO 2 : 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/cm 2 at an electric field strength of E = 4 kV/cm at a shear rate of 17.1 s –1 .