Hybrid materials exhibit unique optical and catalytic properties that are dependent on their composition, morphology and structure. In this work, Bi 2 S 3 /Cu 7.2 S 4 composites with flower-like morphology have been successfully prepared via a facile and effective approach based on a hydrothermal method and an ion-exchange reaction. The molar composition of Bi and Cu in the Bi 2 S 3 /Cu 7.2 S 4 composites can be simply modulated by changing the amount of CuCl 2 ·2H 2 O. The photocatalytic activity of the obtained product was evaluated through the photodegradation of Rhodamine B (RhB) under visible light irradiation. The results show clearly that the Bi 2 S 3 /Cu 7.2 S 4 composites possess a much high photocatalytic activity (about 92.2 % of RhB was degraded within 75 min) than pure Bi 2 S 3 and copper sulfide particles. This work provides useful insight into the rational design and preparation of novel and effective chalcogenide-based hybrid photocatalysts.
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