▎ 摘　　要

NOVELTY - Preparing bismuthyl carbonate-graphene oxide nano-composite comprises mixing sodium bismuthate dihydrate, oxalate dihydrate and graphene oxide nanosheet, ball milling and carrying out solid phase reaction, washing the obtained product, centrifuging and drying. USE - The method is useful for preparing bismuthyl carbonate-graphene oxide nano-composite. ADVANTAGE - The method is simple, easy to control and suitable for large scale production; reduces agglomeration of product particles and avoids use of reduction agent, template agent and solvent; and improves purity of the product and is environmentally friendly.