3.1.1. Modification of BiOCl samples

The modification of BiOCl with Ag and OG was carried out by photodeposition method, which consisted in disperse 500 mg of BiOCl (P2600 and SB) in deionized water during 30 minutes, then the particles of the Ag or OG were added in different percentages; in the case of Ag were 2.0, 0.5, and 0.1% w/w and for OG were 0.5 and 0.1% w/w. Then, the sample was irradiated using a Q200 reactor (λ = 250 nm, 304 mW/cm2 ) for 3 h with continuous stirring. Later, the samples were centrifuged and thoroughly water washed for several cycles, and finally, they were dried at 70C for 24 h. The composites with TiO2 were prepared by solvothermal method with different weight percentages of TiO2 (25, 50, and 75% w/w).
