▎ 摘　　要

A novel core-shell heterostructure with multiwalled carbon nanotubes (MWCNTs) as the core and graphene oxide nanoribbons as the shell(MWCNTs@ GONRs) was prepared from longitudinal partially unzipping of MWCNTs and applied in electrochemical sensing of 1-naphthylamine (1-NA). Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis were used to characterize the morphology and structures of MWCNTs@ GONRs. Owing to the synergistic effects from MWCNTs and GONRs, the oxidation peak current of 1-NA at the MWCNTs@ GONRs modified glassy carbon electrode (GCE) are much higher than those at the MWCNTs/GCE and bare GCE, and the MWCNTs@ GONRs/GCE has a linear response range of 8. 0-400. 0 nmol/L with a detection limit of 2. 5 nmol/L for 1-NA detaunination.