Fig. 8
a Effects of different scavengers on photocatalytic oxidation of As(III) by Ag@AgCl with 120 min visible-light irradiation. Ag@AgCl core–shell nanowires synthesized with the mole ratio of Ag nanowires:FeCl3 = 2.32:2.20, and the experimental conditions were [Ag@AgCl] = 0.3 g/L, [As(III)]0 = 2.0 mg/L, and initial pH = 7.0, P = 300 W. b Schematic diagram of electron–hole pairs separation and the possible reaction mechanism over Ag/AgCl core–shell nanowires under visible-light irradiation