...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials science & engineering >A non-enzymatic sensor based on three-dimensional graphene foam decorated with Cu-xCu_2O nanoparticles for electrochemical detection of glucose and its application in human serum
【24h】

A non-enzymatic sensor based on three-dimensional graphene foam decorated with Cu-xCu_2O nanoparticles for electrochemical detection of glucose and its application in human serum

机译：基于三维石墨烯泡沫的Cu-xCu_2O纳米粒子修饰的非酶传感器用于葡萄糖的电化学检测及其在人血清中的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the present study, a porous structure consisting of three-dimensional graphene (3DG) decorated with Cu-based nanoparticles (NPs) (Cu or Cu-Cu2O) was synthesized in order to develop an enzyme-free electrochemical glucose sensor. Moreover, the effects of Cu-based nanoparticle concentrations on electrochemical properties and glucose detection were evaluated by cyclic voltammetry, electrochemical impedance spectroscopy, and differential pulse voltammetry. Cu-based NPs@3DG showed markedly better electrochemical performance in glucose oxidation in alkaline solution compared to 3DG foam. Moreover, Cu-Cu2O NPs@3DG foam with the lowest concentration of Cu precursor showed excellent performance in glucose detection. A high sensitivity of 230.86 A mM(-1) cm(-2) was obtained for this electrode in a linear range of 0.8-10 mM (R-2 = 0.9951) and a detection limit of 16 mu M. This sensor also showed good repeatability (relative standard deviation of 1.02%) and high selectivity (no observation of significant interference by interfering species such as ascorbic acid, dopamine, urea, and acetaminophen). The results confirmed that this electrode could be applied as a feasible and inexpensive non-enzymatic electrochemical glucose sensor.
机译：在本研究中，合成了由三维石墨烯（3DG）修饰的多孔结构，该三维石墨烯装饰有基于铜的纳米颗粒（NPs）（Cu或Cu-Cu2O），以开发无酶电化学葡萄糖传感器。此外，通过循环伏安法，电化学阻抗谱和差分脉冲伏安法评估了铜基纳米粒子浓度对电化学性能和葡萄糖检测的影响。与3DG泡沫相比，铜基NPs @ 3DG在碱性溶液中的葡萄糖氧化中表现出明显更好的电化学性能。此外，具有最低Cu前体浓度的Cu-Cu2O NPs @ 3DG泡沫在葡萄糖检测中表现出出色的性能。此电极在0.8-10 mM（R-2 = 0.9951）的线性范围内和16μM的检测极限下获得230.86 A mM（-1）cm（-2）的高灵敏度。该传感器还显示出良好的重复性（相对标准偏差为1.02％）和高选择性（未观察到抗坏血酸，多巴胺，尿素和对乙酰氨基酚等干扰物质的显着干扰）。结果证实该电极可以用作可行且廉价的非酶促电化学葡萄糖传感器。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号