基于二维纳米复合材料的电化学传感器用于快速测定反式白藜芦醇。
Two-dimensional nanocomposite-based electrochemical sensor for rapid determination of trans-resveratrol.
机构信息
School of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China.
School of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China.
出版信息
Sci Total Environ. 2020 Nov 10;742:140351. doi: 10.1016/j.scitotenv.2020.140351. Epub 2020 Jun 18.
A two-dimensional nanocomposite-based disposable electrochemical sensor was fabricated for the rapid analysis of trans-resveratrol (TRA) in red wine. The sensor was prepared by modifying graphene-molybdenum disulfide (Gr-MoS) nanocomposite on the surface of screen-printed electrode (SPE). Results show that the Gr-MoS nanocomposite with sheet-on-sheet structure can accelerate the oxidation reaction kinetics of TRA due to its large effective electrochemical surface area and high electron transfer rate. As a result, the Gr-MoS nanocomposite appears the synergistic effects, making the highly sensitive detection of TRA come true. The prepared sensor showed a linear response in TRA concentration from 1.0 to 200 μmol L (with a limit of detection of 0.45 μmol L). After validating the accuracy with high performance liquid chromatography (HPLC), this nanocomposite-based electrochemical sensor can be applied for the detection of TRA in real red wine samples.
一种基于二维纳米复合材料的一次性电化学传感器被制备出来，用于快速分析红酒中的反式白藜芦醇（TRA）。该传感器是通过在丝网印刷电极（SPE）表面修饰石墨烯-二硫化钼（Gr-MoS）纳米复合材料制备的。结果表明，具有片层-片层结构的 Gr-MoS 纳米复合材料由于其较大的有效电化学表面积和较高的电子转移速率，能够加速 TRA 的氧化反应动力学。因此，Gr-MoS 纳米复合材料表现出协同效应，实现了对 TRA 的高灵敏度检测。所制备的传感器在 TRA 浓度为 1.0 至 200 μmol L 范围内呈现线性响应（检出限为 0.45 μmol L）。通过与高效液相色谱（HPLC）验证准确性后，该基于纳米复合材料的电化学传感器可用于检测真实红酒样品中的 TRA。
Zotero 插件