▎ 摘　　要

This study modified hydrogels prepared from silk fibroinand graphene oxideby injecting plasma into the silk. The SF-GO hydrogels, modified by plasma jet with different discharge time (30, 90, and 150 s) and working gases (argon, air, helium), undergo electrochemical AC impedance spectrum tests. After hydrogel modification with the plasma of any working gas, the impedance in the very low frequency (10(-2)similar to 10(0) Hz) decreased with a longer plasma discharge time. In the very low frequency, the sequence of impedance change is Ar group air group >He group. Fourier transform infrared spectrum, and X-ray diffraction spectrum showed a reduction of beta-fold structure and graphene oxide content in SF-GO hydrogels modified by plasma.