ZHAO Jing,LIU Shiwei,YANG Yuxin,et al.Electrodeposition of Au Nanoparticle-Graphene Composites Modified Electrode for Ampicillin Detection[J].Plating & Finishing,2022,(11):41-46.[doi:10.3969/j.issn.1001-3849.2022.11.008]
电沉积制备纳米金-石墨烯复合材料修饰电极测定氨苄西林
- Title:
- Electrodeposition of Au Nanoparticle-Graphene Composites Modified Electrode for Ampicillin Detection
- Keywords:
- electrodeposition ; Au nanoparticle ; graphene ; ampicillin
- 分类号:
- O652.1
- 文献标志码:
- A
- 摘要:
- 采用一步电沉积法在抛光处理后的玻碳电极表面制备纳米金 - 还原氧化石墨烯（ AuNPs-rGO ）复合材料，利用循环伏安法和电化学阻抗法研究 AuNPs-rGO 复合材料的电化学性质，并将其应用于氨苄西林分子印迹电化学传感器的构建中。结果表明：采用一步电沉积法制备的 AuNPs-rGO 复合材料具有制备过程简单可控，避免使用强还原剂带来污染的优点，仅需 250 s 就可在玻碳电极表面制备出导电性好、稳定性高的 AuNPs-rGO 复合材料。将其应用于氨苄西林分子印迹电化学传感器的构建可有效提高传感器的检测灵敏度和稳定性，实现氨苄西林的快速、灵敏检测。传感器的线性范围为 3.00×10 -9 ~ 7.00×10 -6 mol·L -1 ，最低检出限为 1.26×10 -9 mol·L -1 （ S / N = 3 ）。
- Abstract:
- ： Au nanoparticle-reduced graphene oxide （ AuNPs-rGO ） composites were prepared on polished glassy carbon electrode by one-step electrodeposition method ， the electrochemical properties of AuNPs-rGO composites were investigated by cyclic voltammetry and electrochemical impedance spectroscopy measurements ， and AuNPs-rGO composites were applied to construct ampicillin molecularly imprinted electrochemical sensor. The results showed that AuNPs-rGO composites prepared by one-step electrodeposition method had many advantages such as simple and controllable preparation processes ， could avoid pollution caused by strong reducing agent ， and it only took 250 s to prepare AuNPs-rGO composites with good conductivity and high stability at glassy carbon electrode. AuNPs-rGO composites could effectively improve the detection sensitivity and stability of the ampicillin molecularly imprinted electrochemical sensor ， and the rapid and sensitive detection of ampicillin was achieved. The linear range of the sensor was from 3.00×10 -9 to 7.00×10 -6 mol·L -1 ， and the limit of detection was 1.26×10 -9 mol·L -1 （ S / N = 3 ） .
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备注/Memo
收稿日期： 2022-04-19 修回日期： 2022-04-25 作者简介： 赵晶（ 2000 —），女，本科生， email ： 2837901672@qq.com 通信作者： 廉文静， email ： lwjjue@126.com 基金项目： 天津市高等学校基本科研业务费天津农学院青年教师创新基金项目（ 2016JNYB03 ）；国家级大学生创新训 练计划项目（ 202010061004 ）；国家自然科学基金青年基金项目（ 22102115 ）