A simple, rapid and green method based on pulsed potentiostatic electrodeposition of reduced graphene oxide on glass carbon electrode for sensitive voltammetric detection of sophoridine
A simple, rapid and green method based on pulsed potentiostatic electrodeposition of reduced graphene oxide on glass carbon electrode for sensitive voltammetric detection of sophoridine
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一种简单、快速、绿色的基于玻璃碳电极上还原氧化石墨烯脉冲恒电位电沉积的槐定伏安灵敏检测方法
DOI：
10.1016/j.electacta.2014.07.018
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发表时间：
2014-09
影响因子：
6.6
通讯作者：
Ye, Baoxian
中科院分区：
文献类型：
--
作者：
Wu, Yanju;Lu, Kui;Gao, Lin;Ye, Baoxian
描述了一种简单、快速、绿色的方法，用于通过氧化石墨烯 (GO) 胶体溶液的脉冲恒电位还原将石墨烯纳米片直接沉积到玻碳电极 (GCE) 上，用于槐定碱的灵敏伏安检测。通过电化学方法和扫描电子显微镜对所得电极（PP-ERGO/GCE）进行了表征。此外，通过循环伏安法（CV）、计时电流法（CA）和计时库仑法（CC）详细研究了槐定碱在修饰电极上的电化学行为。与裸GCE和恒电位法（PM）修饰GCE制备还原氧化石墨烯（RGO）薄膜相比，PP-ERGO/GCE可以显着增强氧化峰电流并降低槐定的过电位。在选定的条件下，修饰电极在8.0 × 10−7∼ 1.0 × 10−4mol L−11浓度范围内对槐定表现出线性伏安响应，检测限为2.0 × 10−7mol L−1。并且，该方法还用于检测人尿中的槐定碱，结果非常满意。
A simple, rapid and green method was described for sensitive voltammetric detection of sophoridine based on graphene nanosheets directly deposited onto a glassy carbon electrode (GCE) by pulsed potentiostatic reduction of a graphene oxide (GO) colloidal solution. The resulting electrodes (PP-ERGO/GCE) were characterized by electrochemical methods and scanning electron microscopy. Moreover, the electrochemical behaviors of sophoridine at the modified electrode were investigated in detail by cyclic voltammetry (CV), chronoamperometry (CA) and chronocoulometry (CC). Compared with the bare GCE and the preparation of reduced graphene oxide (RGO) films by potentiostatic method (PM) modified GCE, PP-ERGO/GCE could intensively enhance the oxidation peak currents and decrease the overpotential of sophoridine. Under the selected conditions, the modified electrode showed a linear voltammetric response to sophoridine within the concentration range of 8.0 × 10−7∼ 1.0 × 10−4mol L−11, with the detection limit of 2.0 × 10−7mol L−1. And, the method was also applied to detect sophoridine in spiked human urine with wonderful satisfactory.
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影响因子：
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作者：
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通讯作者：
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