Adsorption performance of titanium dioxide (TiO2) coated air filters for volatile organic compounds

► Systematic approach for evaluation of adsorption performance of UV-PCO is developed. ► Adsorption behaviors of TiO2 coated air filters for various VOCs were examined. ► Adsorptive performance is the sum of interactions between substrates and VOCs. ► The presence of water vapor plays an important role on the adsorption behavior. ► Photocatalytic activity is closely related to the adsorption process.