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摘要
Graphene oxide / ZnO nanorod arrays (GO / ZnO NRs) were prepared on the surface of stainless steel by microwave hydrothermal synthesis as an enzyme?free glucose sensor electrode. The morphology, organization and structure of the electrode were characterized by scanning electron microscope, X?ray diffractometer, transmission electron microscope, etc., and the electrode was subjected to current?time (I?t) through electrochemical workstation under light and non?light conditions. I?t curve tests were used to analyzed the photoelectrochemical performance of GO/ ZnO NRs under different graphene oxide (GO) deposition conditions, and photoelectrochemical glucose sensing tests were performed on the electrode under enzyme?free conditions. The results show that the addition of GO transform the disordered nanoparticle/ rod morphology of ZnO into an one?dimensional array of directional growth. With the increase of GO content, the vertical accumulation of ZnO(200) crystal planes is suppressed, while the crystal planes (100) and (101) are gradually accumulated. Thus, the morphology of ZnO NRs grow from the original sharp tip to a flat tip. The obtained GO/ ZnO NRs have high detection sensitivity for glucose, low detection limit and good detection range. ? 2022 Cailiao Daobaoshe/ Materials Review.
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