Method for producing composites of activated carbon-TiO2

摘要

The subject of the present invention is a method of preparation of TiO 2 -activated carbon composites (AC-TiO 2 ), characterized by fact that undried, liquid molasses is mixed with TiO 2 , dried, crushed and carbonised in inert atmosphere at the temperature range of 400-1000°C. Then, the carbonaceous raw material is treated with an HCl solution, washed with distilled water and dried at the temperature range of 50-250°C. Advantageous effects are obtained with an activator where molasses and TiO 2 are at the weight ratio of 1:0.01-10. The commonly used activators include KOH and/or NaOH and/or ZnCl 2 and/or Na 2 CO 3 and/or K 2 CO 3 . TiO 2 and the activator have been added to molasses, the mixture is dried at the temperature range of 80-200°C. Both beet and cane molasses can be used. Any form of TiO 2 can be used, e.g. anatase, rutile, a mixture of anatase and rutile at any ratio, and titanium dioxide nanoparticles. An inert gas delivered at 100 - 700 ml/min has a positive effect. Advantageous effects are obtained using nitrogen or any noble gas as the inert gas.