TiO2 Supported on Quartz Wool for Photocatalytic Oxidation of Hydrogen Sulphide

A spacial system consisting of TiO2 on a fibrous support was prepared by hydrolysis of titanium isopropoxide in the presence of quartz wool, followed by calcination. The material was characterized by X-ray diffraction, nitrogen adsorption-desorption at 77 K, X-ray photoelectron spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The TiO2/support system was examined as a photocatalyst for UV-assisted oxidation of H2S in air. The results obtained confirmed a superior performance of the TiO2/support system over TiO2 powder. H2S underwent oxidation to elemental sulphur and/or S6+. The relative amounts of these species were influenced by humidity.