Open AccessINVESTIGATION OF INCREASING THE PHOTOCATALYTIC ACTIVITY OF TITANIUM DIOXIDE DUE TO THE USE OF TUNGSTEN (VI) OXIDE
Author(s) -
Aleksandr Bakhtin,
Nikolay Lyubomirskiy,
Tamara Bakhtinа,
V. V. Nikolaenko,
Vladimir Gavrish
Publication year - 2021
Publication title -
stroitelʹstvo i tehnogennaâ bezopasnostʹ
Language(s) - English
Resource type - Journals
ISSN - 2413-1873
DOI - 10.37279/2413-1873-2021-22-67-78
Subject(s) - photocatalysis , titanium dioxide , tungsten trioxide , rutile , nuclear chemistry , rhodamine b , tungsten compounds , inorganic chemistry , materials science , aqueous solution , chemistry , decomposition , tungsten , catalysis , metallurgy , organic chemistry
The paper presents the results of experimental studies to determine the possibility of increasing the photocatalytic activity of titanium dioxide through the use of tungsten (VI) oxide, by testing the decomposition of rhodamine B as an organic pollutant in aqueous solutions under the influence of UV radiation, including in the visible spectrum. Industrial titanium dioxide of rutile modification and tungsten trioxide obtained by biological synthesis due to the use of the vital activity of thionic bacteria (Thiobacillus ferrooxidans) were used as photocatalysts. It was found that the dye concentration in a solution with a mixture of TiO2 and WO3 in a ratio of 1: 1 under the influence of natural solar radiation decreased by 85% after 28 days of study compared with 30% and 42% for solutions with pure WO3 and TiO2, respectively.