The First Affiliated Hospital, Zhengzhou University, Zhengzhou, 450001, PR China.
Analyst. 2019 Mar 11;144(6):2120-2129. doi: 10.1039/c8an02307g.
A novel type of sandwich MOF was successfully synthesized on reduced graphene oxide (denoted as M@Pt@M-rGO) by an in situ synthesis method. The obtained M@Pt@M-rGO possesses excellent electrochemical properties. The surface morphology and structure of M@Pt@M-rGO were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), etc. By using M@Pt@M-rGO, a novel electrochemical sensor was constructed and successfully used for the simultaneous and sensitive detection of three isomers: hydroquinone (HQ), catechol (CT) and resorcinol (RS), with wider linear ranges of concentrations of 0.05-200 μM, 0.1-160 μM and 0.4-300 μM and lower detection limits of 0.015 μM, 0.032 μM and 0.133 μM (S/N = 3) for HQ, CT and RS, respectively. Besides, the proposed electrochemical sensor showed excellent anti-interference capability, high stability, good reproducibility, and satisfactory recovery for determination of isomers in river and lake water.
一种新型三明治型 MOF 通过原位合成法成功地在还原氧化石墨烯上合成（表示为 M@Pt@M-rGO）。所得到的 M@Pt@M-rGO 具有优异的电化学性能。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、傅里叶变换红外光谱（FT-IR）、X 射线衍射（XRD）等手段对 M@Pt@M-rGO 的表面形貌和结构进行了表征。通过使用 M@Pt@M-rGO，构建了一种新型电化学传感器，并成功地用于同时灵敏地检测三种异构体：对苯二酚（HQ）、邻苯二酚（CT）和间苯二酚（RS），HQ、CT 和 RS 的浓度线性范围分别为 0.05-200 μM、0.1-160 μM 和 0.4-300 μM，检测限分别为 0.015 μM、0.032 μM 和 0.133 μM（S/N = 3）。此外，所提出的电化学传感器表现出优异的抗干扰能力、高稳定性、良好的重现性以及对河水和湖水异构体测定的令人满意的回收率。
