Facile preparation of an ultrathin nickel film coated nanoporous gold electrode with the unique catalytic activity to oxidation of glucose

A facile approach to prepare a Ni coated nanoporous gold (Ni@NPG) electrode with the combination of a UPD monolayer and galvanic displacement is described, which not only conserves the 3-D nanostructure of the NPG electrode but presents unique catalytic activity to the electrode surface to significantly enhance the performance of glucose detection.