Non-enzymatic sensing of glucose and hydrogen peroxide using a glassy carbon electrode modified with a nanocomposite consisting of nanoporous copper, carbon black and nafion

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• 作者：Ling Mei ; Pengcheng Zhang ; Jiyun Chen ; Dandan Chen ; Ying Quan ; Ning Gu…
• 关键词：X ; ray diffraction ; Transmission electron microscopy ; High ; resolution scanning electron microscopy ; Dealloying ; Electrooxidation ; Cyclic voltammetry
• 刊名：Microchimica Acta
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：183
• 期：4
• 页码：1359-1365
• 全文大小：620 KB
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• 作者单位：Ling Mei (1) (2)
  Pengcheng Zhang (1)
  Jiyun Chen (1)
  Dandan Chen (1)
  Ying Quan (1)
  Ning Gu (2)
  Genhua Zhang (1)
  Rongjing Cui (1)
  
  1. School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, 215500, China
  2. Department of Chemistry and materials, Hebei Normal University, Shijiazhuang, 050024, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Inorganic Chemistry
  Physical Chemistry
  Characterization and Evaluation Materials
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  
• 出版者：Springer Wien
• ISSN：1436-5073

文摘

Three-dimensional nanoporous copper (NPC) was fabricated by dealloying ribbons of an Al-Cu alloy. NPC possesses a clean metal surface and high electrical conductivity. Subsequently, a non-enzymatic electrochemical sensor was obtained by modifying a glassy carbon electrode with nanocomposites containing nanoporous copper and carbon black (NPC-CB) in a nafion matrix. The sensor, if operated at a working voltage of 0.6 V (vs. SCE) in 50 mM NaOH solution, has a linear analytical range that extends from 6.0 μM to 3.4 mM of glucose, and a 2.6 μM detection limit (at an S/N ratio of 3). It also shows good selectivity over ascorbic acid, uric acid, dopamine and carbohydrates (fructose, saccharose, and maltose). The sensor also has a rapid amperometric response to hydrogen peroxide which can be quantified with a 1.2 μM detection limit.