Ionic liquid induced mechanochemical synthesis of BiOBr ultrathin nanosheets at ambient temperature with superior visible-light-driven photocatalysis.

BiOBr ultrathin nanosheets with the thickness of 3–4 nm were prepared via an ionic liquid ([C16mim]Br) assisted mechanochemical synthesis method at ambient temperature for the first time. Remarkably improved photocatalytic activity for BPA and TC degradation demonstrating ionic liquid assisted ball milling method brings out a promising research prospect for the synthesis of ultrathin nanosheet with preeminent photocatalytic performance.