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  • Title: One-pot hydrothermal synthesis of ZnO/RGO/ZnO@Zn sensor for sunset yellow in soft drinks.
    Author: Wu X, Zhang X, Zhao C, Qian X.
    Journal: Talanta; 2018 Mar 01; 179():836-844. PubMed ID: 29310315.
    Abstract:
    ZnO/RGO/ZnO nanocomposite was in-situ anchored on Zn foil through a simple one-step hydrothermal approach. Based on the redox reaction between graphene oxide (GO) and Zn foil, and the electrostatic attraction between the negative-charged GO and positive-charged zinc ions, three strong interfaces of ZnO/RGO, RGO/ZnO and ZnO/Zn were simultaneously constructed, which led to improved electron and ion transfer. As-prepared ZnO/RGO/ZnO@Zn directly acted as sensor for amperometric detection of sunset yellow without further assembling, which exhibited an ultrahigh sensitivity of 20.25uAμM-1cm-2, a low limit of detection (3nM), a wide linear detection ranging from 0.01 to 5µM.
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