Green synthesis of a Cu/reduced graphene oxide/Fe 3 O 4 nanocomposite using Euphorbia wallichii leaf extract and its application as a recyclable and heterogeneous catalyst for the reduction of 4-nitrophenol and rhodamine B

Herein, we describe a green and eco-friendly synthesis method for preparing a Cu/RGO/Fe 3 O 4 nanocomposite through biological reduction of graphene oxide and Cu 2+ , Fe 3+ ions using Euphorbia wallichii leaf extract as a reducing and stabilizing agent.