Green synthesized Co nanoparticles doped amino-graphene modified electrode and its application towards determination of baicalin.
Green synthesized Co nanoparticles doped amino-graphene modified electrode and its application towards determination of baicalin.
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DOI：
10.1016/j.talanta.2016.11.050
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发表时间：
2017-03
期刊：
影响因子：
6.1
通讯作者：
Kai Sheng;Lu Wang;Huichao Li;Lina Zou;B. Ye
中科院分区：
文献类型：
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作者：
Kai Sheng;Lu Wang;Huichao Li;Lina Zou;B. Ye
本文报道了一锅法合成Co纳米粒子掺杂的氨基石墨烯纳米复合材料（Co-amino-Gr），包括原位合成Co纳米粒子（NPs）。在温和的反应条件下，采用环境友好的还原剂甘氨酸，实现了氧化石墨烯（GO）和Co ~（2+）同时还原生成Co-氨基-Gr。结合氨基-Gr和Co纳米粒子的优点，构建了基于Co-氨基-Gr纳米复合物的黄芩苷电化学传感器。在最佳条件下，响应峰电流与黄芩苷浓度在1.0×10−8 ~ 8.0×10− 7 mol L− 1范围内呈良好的线性关系，检测下限为5.0×10− 9 mol L−1（S/N=3）。将该方法用于胶囊剂中黄芩苷的测定，结果满意。
The present paper reported an one-pot synthesis of Co nanoparticles doped amino-graphene nanocomposites (Co-amino-Gr), involvingin situgeneration of Co nanoparticles (NPs). The simultaneous reduction of graphene oxide (GO) and Co2+to produce Co-amino-Gr had been achieved under mild reaction conditions using an environmentally benign reducing agent, glycine. By combining the merits of amino-Gr and the Co NPs, a highly sensitive electrochemical sensor was erected to detect baicalin based on the Co-amino-Gr nanocomposites. Under optimum conditions, the response peak currents were linear related with baicalin concentrations in the range of 1.0×10−8–8.0×10−7mol L−1with a lower detection limit of 5.0×10−9mol L−1(S/N=3). Additionally, the proposed method was used to detect baicalin in the medicinal capsules with satisfactory results.