In situ preparation of hierarchical CuO@NiCo LDH core–shell nanosheet arrays on Cu foam for highly sensitive electrochemical glucose sensing

3D hierarchical core–shell nanostructures of CuO nanorods with NiCo LDH nanosheet arrays (CuO@NiCo LDH NSAs/CF) acting as electrodes have excellent sensing performance for glucose with a low detection limit of 0.16 μM at S/N = 3.