Reusable isotype heterojunction g-C3N4/alginate hydrogel spheres for photocatalytic wastewater treatment

Isotype heterojunction g-C 3 N 4 synthesized from urea and thiourea showed high photocatalytic activity, completely decolorizing Rhodamine B in 15 min under visible light. Immobilized in an alginate hydrogel, it maintained efficiency over 10 cycles.