Tio2 aeroxide p25

TiO₂ Aeroxide p25 (ACROS ORGANICS), Cu(NO₃)₂⋅3H₂O (> 95%), (NH₄)₆Mo₇O₂₄⋅4H₂O (<95%) were obtained from Fisher chemicals, Na₂S (99%, ALPHA CHEMICALS), C₂H₅NS (98%, Alfa Aesar), H₂O₂, methanol, and MB was obtained from Sigma–Aldrich. All the reagents were of analytical grade and used as received without further purification.
For comparison purposes metal chalcogenides MS_x (CuS or MoS₂) were loaded over TiO₂ via two different methods, namely, hydrothermal treatment and coprecipitation methods. The detailed synthesis procedure is illustrated as follows.

The list of used chemicals and solvents can be found in Table S1. Trimethoprim (TRIM) was used as the target substance for photocatalytic test reactions. Air or N₂ gas was applied to control the dissolved O₂ concentration of the treated solution or suspension. To investigate the effect of peroxydisulfate ion (S₂O₈²⁻, PDS), Na₂S₂O₈ solution was added to the suspension. Each material was used without further purification. Table S2 shows the data of the biologically treated domestic wastewater (from the water treatment plant, Szeged, Hungary) used as a matrix. Two commercially available photocatalysts, TiO₂ Aeroxide^® P25 (Acros Organics; Geel, Antwerp, Belgium) and ZnO (d < 100 nm, Sigma Aldrich; St. Louise, MO, USA) photocatalysts were applied during the experiments. Section 2.4. contains the characterization of the photocatalysts.