Efficient visible-light-induced photocatalytic degradation of MO on the Cr-nanocrystalline titania-S

► Synthesis of Cr-TiO2-S nanoparticles as a novel and efficient visible-light-induced photocatalysts. ► Structural, chemical and morphological characteristics of prepared samples. ► The promoting effects of Cr,S-modification on the photocatalytic activity of pure TiO2 was observed and discussed. ► The prepared Cr-TiO2-S exhibited much higher activity than the undoped TiO2. ► Maximum of photocatalytic degradation reach till 93% by Cr(5)-TiO2-S(5).