引用本文: 唐小强, 陈裕雲, 罗燕妮, 韦富存, 杜方凯, 谭学才. 基于TiO2 NRs@ZnIn2S4 NSs复合材料的谷胱甘肽光电化学传感器的构建与应用. 分析化学, 2019, 47(8): 1188-1194. doi: 10.19756/j.issn.0253-3820.191231 [复制]
Citation: TANG Xiao-Qiang , CHEN Yu-Yun , LUO Yan-Ni , WEI Fu-Cun , DU Fang-Kai , TAN Xue-Cai . A Novel Glutathione Photoelectrochemical Sensor Based on Titanium Dioxide Nanorods@ZnIn2S4 Nanosheets Nanocomposites. Chinese Journal of Analytical Chemistry, 2019, 47(8): 1188-1194. doi: 10.19756/j.issn.0253-3820.191231 [复制]
基于TiO2 NRs@ZnIn2S4 NSs复合材料的谷胱甘肽光电化学传感器的构建与应用
A Novel Glutathione Photoelectrochemical Sensor Based on Titanium Dioxide Nanorods@ZnIn2S4 Nanosheets Nanocomposites
采用简便的两步水热原位生长法，以FTO为基底制备了二氧化钛纳米棒（TiO2 nanorods，TiO2 NRs）/硫铟锌纳米片（ZnIn2S4 nanosheets，ZnIn2S4 NSs）复合材料（TiO2 NRs@ZnIn2S4 NSs/FTO），并基于此构建了一种新型谷胱甘肽（GSH）光电化学传感器。分别采用扫描电镜（SEM）、X射线能谱仪（EDX）、X射线粉末衍射仪（XRD）和紫外-可见漫反射吸收光谱（UV-vis DRS）对TiO2 NRs@ZnIn2S4 NSs/FTO复合材料的形貌、结构和性能进行了表征，通过电流-时间法（i-t）和电化学阻抗法（EIS）研究了PEC传感器的性能。结果表明，光电流大小与GSH浓度在1~130 μmol/L范围内呈良好的线性关系，相关系数R=0.9919，检出限为0.1 μmol/L（S/N=3）。此传感器具有较高的稳定性和良好的选择性及重现性，将其应用于市售的谷胱甘肽片和注射用还原型谷胱甘肽的检测，加标回收率为99%-110%。
A binder-free efficient sulphur indium zinc nanosheets coating titanium dioxide nanorods on conductive fluorine-doped tin oxide substrate electrode (TiO2 NRs@ZnIn2S4 NSs/FTO) was developed by simple two-steps hydrothermal method. The morphology, structure and element composition of the as-prepared materials was characterized by scanning electron microscopy, X-ray diffraction, X-ray energy-dispersive spectroscopy and UV-visible diffuse reflectance spectroscopy, respectively. A novel glutathione (GSH) photoelectrochemical (PEC) sensor was fabricated based on TiO2 NRs@ZnIn2S4 NSs/FTO modified electrode. The properties of the PEC sensor were studied via current-time curve (i-t) and electrochemical impedance spectroscopy techniques. Under the optimal conditions, GSH concentration in the range of 1-130 μmol/L had a good linear relationship with photocurrent (R=0.9919), and the detection limit was 0.1 μmol/L (S/N=3). The fabricated PEC sensor exhibited good selectivity, high stability, and high reproducibility. Moreover, This PEC sensor was successfully applied to detection of GSH in glutathione tablets and reduced GSH for injection samples with favorable recoveries of 99%-110%.
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基于TiO2 NRs@ZnIn2S4 NSs复合材料的谷胱甘肽光电化学传感器的构建与应用
A Novel Glutathione Photoelectrochemical Sensor Based on Titanium Dioxide Nanorods@ZnIn2S4 Nanosheets Nanocomposites
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