A Sensitive Amperometric Sensor for the Determination of Sophocarpine Based on Vertically Oriented Graphene Nanosheets Modified Glassy Carbon Electrode
A Sensitive Amperometric Sensor for the Determination of Sophocarpine Based on Vertically Oriented Graphene Nanosheets Modified Glassy Carbon Electrode
复制标题
基于垂直取向石墨烯纳米片修饰玻碳电极的灵敏电流传感器测定槐果碱
DOI：
10.1149/2.0531506jes
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发表时间：
2015
影响因子：
3.9
通讯作者：
Ge, Junda
中科院分区：
文献类型：
--
作者：
Cao, Yi;Zhang, Bingying;Gao, Lin;Ge, Junda
我们提出通过脉冲电位法（PPM）在玻碳电极上电沉积具有优选垂直取向的还原氧化石墨烯（ERGO）薄膜。通过电化学方法和扫描电子显微镜对 ERGO 薄膜进行了表征。首次应用该薄膜的电沉积技术开发了用于测定槐果碱的高灵敏度电化学传感器。然后通过循环伏安法研究了槐果碱的电化学行为。结果表明，ERGO薄膜可以通过大大增强氧化峰电流并降低槐果碱的过电位，有效地增强槐果碱的氧化响应。在所选条件下，该传感器对槐果碱在1.0×10−6至1.0×10−4 mol L−1的较宽线性范围内表现出良好的电流响应，检出限低至3.0×10−7 mol L−1。同时，该方法还成功应用于人尿中添加的槐果碱的定量测定，结果令人满意。
We presented to fabricate the electrodeposition of the film of reduced graphene oxide (ERGO) with preferred vertical orientation on the glassy carbon electrode through pulse potential method (PPM). The ERGO film were characterized by electrochemical methods and scanning electron microscopy. For the first time, the electrodeposition of the film was applied to develop a highly sensitive electrochemical sensor for determination of sophocarpine. The electrochemical behavior of sophocarpine was then studied by cyclic voltammetry. The results revealed that the ERGO film can effectively increase response toward the oxidation of sophocarpine by greatly enhancing the oxidation peak currents and decrease the overpotential of sophocarpine. Under the selected conditions, the sensor showed good amperometric response for sophocarpine within a wide linear range from 1.0× 10− 6 to 1.0× 10− 4 mol L− 1 and a low detection limit of 3.0× 10− 7 mol L− 1. At the same time, the method was also successfully applied to the quantitative determination of sophocarpine in spiked human urine and its result was satisfactory.
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影响因子：
15
作者：
HUMMERS, WS;OFFEMAN, RE
通讯作者：
OFFEMAN, RE
影响因子：
2.5
作者：
Li, Gaonan;Li, Tongtong;Sun, Zhenfan
通讯作者：
Sun, Zhenfan
影响因子：
--
作者：
Eeu, Y. C.;Lim, H. N.;Huang, N. M.
通讯作者：
Huang, N. M.
影响因子：
2.7
作者：
Ding, PL;Liao, ZX;Chen, DF
通讯作者：
Chen, DF
影响因子：
41.2
作者：
Geim, A. K.;Novoselov, K. S.
通讯作者：
Novoselov, K. S.