Carbon nanomaterials based nanocomposites have gained increasing interest owing to their potential applications in many aspects, such as photocatalysis, solar cells, solar fuel, etc. Graphene, as a new type of carbon nanomaterial, has attracted consideration attention due to its unique two-dimensional conjugated structure and electronic properties. In this feature article, we cover recent advances in the applications of graphene-based photoactive nanocomposites in environmental remediation and energy conversion, including photocatalytic degradation of organic contaminants, photoelectrochemical solar cells, and solar fuel production. Finally, the perspectives of the challenges and opportunities in this emerging area are also discussed.
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