engleski

Aging of photocatalysts TiO2, TiO2 / multiwall carbon nanotubes and TiO2 / graphene oxide in air

Environmental pollution, and especially water, is causing a growing problem in the world. The use of the chemical and pharmaceutical industry products is the main reason for water pollution by micropollutants, which is being talked about more and more [1]. Micropollutants in water arouse the interest of scientists in how to solve this problem. Advanced oxidation processes such as photocatalysis can be used to purify this type of pollutants [2]. The presence of a photocatalyst is required for the photocatalysis process, and common one used are TiO2, CdS and ZnO. In this paper photocatalyst were prepared by immobilization of TiO2 on glass fibers mesh, and with the aim to improve the photocatalytic activity of TiO2 in the visible part of solar radiation [3] by using TiO2 in combination with multiwall carbon nanotubes and separately with graphene oxide. The influence of aging in air of prepared photocatalysts was investigated through photocatalytic activity before and after aging for 6 months. Also, photocatalysts were examined using scanning electron microscopy and energy-dispersive spectroscopy. After the analysis, it was determined that there was no weakening of photocatalytic activity.

photocatalysis ; titanium dioxide multiwall nanotubes ; graphen oxide

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