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Pharma-products are mostly single or multiple cyclic compounds. They pollute surface water and are persistent in the aquatic ecosystem. When irradiated by UV light, TiO catalysts cleave or degrade organic contaminants in water. Removal of organics by photocatalysis results from a synergistic effect of adsorption and photocatalysis. Synthesis of catalysts by ultrasound (US) produces high surface area and porous solids. Here, we synthesized Mn-doped TiO with a US-assisted sol-gel method. Compared to the classical synthesis, US increased the BET surface area from 83 m g to 90 m g in the Mn-TiO sample and from 9.0 m g to 53 m g in the control TiO. Accordingly, acetaminophen and amoxicillin adsorption increased from 44% to 52%, and from 34% to 94% for the Mn-TiO obtained in absence and presence of US, respectively. When in a mixture, the two drugs strongly compete for adsorption on TiO.

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