Sn 4+ self-doped hollow cubic SnS as an efficient visible-light photocatalyst for Cr( vi ) reduction and detoxification of cyanide

self-doped hollow cubic SnS heterojunctions are prepared through a novel general designed strategy. The in situ self-doping generates more heterojunctions in SnS x . The hollow structure of sample makes multiple reflections of light within the chamber, allowing more efficient use of the light source. The products exhibit a remarkable photocatalytic activity.