Effect of parametes of production process of photocatalytic coatings on bactericidal property

Abstract

The paper presents the results of researching the influence of the mode of creating photocatalytic coatings of glass substrates by the method of reactive magnetron deposition on their bactericidal properties. Tatanium dioxide (TiO2) is in the basis of used film photocatalytic coatings. When depositing coatings, such parameters were varied as work pressure in the chamber, volume fraction of reactionary gas (О2), durability of deposition, a distance “magnetron-sample”, average current of discharge, etc. Bacterial culture Escherichia coli was used as a test-object. The change of the indentified parameters in a certain interval allowed specifying the mode of deposition of photocatalytic film, by which bactericidal effect is achieved. In real conditions of the environment, experiments on revealing self-antiseptic ability of the obtained coatings, confirming the reduction of surface contamination in the presence of film, were conducted.