Abstract

A nanohybrid of graphene oxide and multiwalled carbon nanotubes (GO-CNTs) was synthesized through π–π interaction. The nickel–cobalt hybrid hexacyanoferrate decorated GO-CNTs (NiCoHCF/GO-CNTs) was prepared by electrodeposition of NiCoHCF in different ratios of Co2+ to Ni2+ solution on GO-CNTs. The characterization was performed by UV–vis, FT-IR, Raman spectroscopy, and SEM. The electrochemistry behavior of NiCoHCF/GO-CNTs was studied by cyclic voltammetry. The NiCoHCF/GO-CNT modified GCE (NiCoHCF/GO-CNT/GCE) exhibited greatly improved electrocatalytic activity towards electrooxidation of hydroxylamine. The modified electrode exhibited a wide linear range from 0.2μM to 150μM and a low detection limit (LOD) of 0.08μM.

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