Fig. 4From: Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible LightXPS spectra of a Cl 2p region and b Ag 3d region of Ag@AgCl core–shell nanowires synthesized with the mole ratio of Ag nanowires:FeCl3 = 2.32:2.20Back to article page