A green hybrid nanocomposite of rGO/ZIF-8 was successfully synthesised via multi-recycling approach by reusing unreacted reagents in mother liquor. This eco-friendly approach allows for minimal addition of fresh chemicals and thus reduces the synthesis cost. The one-pot synthesised rGO/ZIF-8 powder was recovered by filtration, and the mother liquor filtrate was reused for the next cycle of synthesis. The product yield from each cycle was evaluated by quantifying the product�s mass. Detailed characterisation studies were carried out by using XRD, TGA, FTIR, BET, SEM, and TEM. ZIF-8 nanoparticles anchored well on the surfaces of rGO without sacrificing the product yield. This approach minimises the use of organic linker and its waste product, leading to low-cost and environmentally friendly synthesis process for rGO/ZIF-8. © 2020, Iranian Chemical Society.