Velmurugan Sethupathi, Tse Man-Mo, Lin Xiao-Yuan, Yu Yuan-Hsiang, Cheng Shu-Hua, Lu Kuang-Lieh
Department of Applied Chemistry, National Chi Nan University, Puli, Nantou Hsien, 545, Taiwan.
Department of Chemistry, Fu Jen Catholic University, New Taipei City, 242, Taiwan.
Mikrochim Acta. 2024 Jul 19;191(8):471. doi: 10.1007/s00604-024-06544-5.
Electrochemical alkalization of (Cu-S) metal-organic framework (MOF) and graphene oxide ((Cu-S) MOF/GO) composite yields a new CuO/(Cu-S) MOF/RGO (reduced GO) composite with porous morphology on screen printed carbon electrode (SPCE) which facilitated the electron transfer properties in electrochemical quercetin (QUE) detection. A selective QUE detection ability has been demonstrated by the constructed electrochemical sensor (CuO/(Cu-S) MOF/RGO/SPCE), which also has a broad dynamic range of 0.5 to 115 µM in pH 3 by differential pulse voltammetry. The detection limit is 0.083 µM (S/N = 3). In this study, it was observed that the real samples contained 0.34 mg mL and 27.7 µg g QUE in wine and onion, respectively.
对（铜-硫）金属有机框架（MOF）和氧化石墨烯（（铜-硫）MOF/GO）复合材料进行电化学碱化，在丝网印刷碳电极（SPCE）上生成了一种具有多孔形态的新型氧化铜/（铜-硫）MOF/还原氧化石墨烯（RGO）复合材料，这促进了电化学检测槲皮素（QUE）时的电子转移特性。构建的电化学传感器（氧化铜/（铜-硫）MOF/RGO/SPCE）已证明具有选择性QUE检测能力，通过差分脉冲伏安法在pH 3条件下其动态范围也很宽，为0.5至115 μM。检测限为0.083 μM（信噪比=3）。在本研究中，观察到实际样品中葡萄酒和洋葱中分别含有0.34 mg/mL和27.7 μg/g的QUE。
