Contamination of water bodies by organic pollutantas, such as dyes, pharmacuticals, phenolic compounds and pesticides is a worldwide problem. Various tehniweqs such as adsoprion, membrane separation, photocatalysis and etc are most common methods for water purification. In this work, novel Ti3C2Tx/Ag embeed on the surface of macroporous synthetic cryogels were synthesyzed and applied for adsorpion with futher photocatalytic degradation of methylene blue (MB) dye from model water solutions. Synthesyzed composites were characterized by SEM/EDS, TEM, XRD, FTIR and other techniques. During the experiments it was observed, that 10 mg of Ti3C2Tx/Ag-cryogel, able to remove up to 50 % of methylene blue from 30 ppm 400 mL stock solution in dark conditions during 2 h of experiment. Due to the presence of various functional groups on the surface of polymeric scaffold the removal process was assumed as ion-exchage/complexation of MB with cryogel. After transfer of MB solution with materials to the photocatalytic reactor (500 nm wavelength), in first 30 min around 15 % of MB was degradated by Ti3C2Tx/Ag presented in the structure of polymeric scaffold. After 2 h of the photocatalysis, almost 70 % of the initial concentration of MB was removed from the solution. The synergistic effect of adsorption/photocatalysis gives a good opportunity to use this composite for effective water purification from organic pollutants.

Photocatalytic and non-catalytic removal of organic pollutants by Ti3C2Tx/Ag-cryogel composite

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