▎ 摘　　要

This work developed a one-step coprecipitation method to synthesize Ni-Al layered double hydroxides decorated graphene nanosheets composite (Ni-Al LDHs/Gr). The obtained Ni-Al LDHs/Gr nanosheets can efficiently capture organophosphate pesticide of methyl parathion (MP) and achieve its highly sensitive analysis. This is probably arising from the excellent conductivity of graphene and the high enrichment effect of Ni-Al LDHs through selective intercalation. The developed MP sensor shows a high detection sensitivity, good selectively and reliable stability. This work shows prospect for developing other electrochemical sensors for analysis of organophosphate pesticide.