▎ 摘　　要

Synergistic combination of graphene and CdS hierarchical nanospheres results in significant enhancement of photocatalytic properties. In this work, environment-friendly graphene-CdS hierarchical nanospheres (G-CdS HN) were synthesized. The morphology, crystalline phases, and photocatalytic applications of G-CdS HN were studied in detail. G-CdS HN demonstrated excellent photocatalytic activity under visible light irradiation. The growth mechanism of CdS hierarchical nanospheres was also studied. This simple and environmental-friendly method can be extended to prepare other graphene-based metal chalcogenide nanocomposites for a wide range of applications.