Engineering graphene/carbon nanotube hybrid for direct electron transfer of glucose oxidase and glucose biosensor

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• 作者：Jianli Chen (1)
  Xianliang Zheng (1)
  Fujun Miao (1)
  Jienan Zhang (1)
  Xiaoqiang Cui (1) xqcui@jlu.edu.cn
  Weitao Zheng (1) wtzheng@jlu.edu.cn
• 关键词：Graphene – ; Carbon nanotube – ; Glucose oxidase – ; Three ; dimensional hybrid – ; Biosensor – ; Direct electrochemistry
• 刊名：Journal of Applied Electrochemistry
• 出版年：2012
• 出版时间：October 2012
• 年：2012
• 卷：42
• 期：10
• 页码：875-881
• 全文大小：696.3 KB
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• 作者单位：1. Department of Materials Science, Key Laboratory of Automobile Materials of MOE and State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012 People鈥檚 Republic of China
• ISSN：1572-8838

文摘

The graphene/carbon nanotube hybrid was designed and implemented by a deoxygenation process for direct electron transfer of glucose oxidase and glucose biosensor. The procedure was analyzed by transmission electron microscopy, X-ray photoelectron spectroscopy, and Raman spectra, etc. The strategy of structurally engineering one-dimensional carbon nanotube (CNT) and two-dimensional graphene oxide (GO) presented three benefits: (a) a deoxygenation process between GO and acid-CNT was introduced under strongly alkaline condition; (b) GO prevented the irreversible integration of CNT; and (c) CNT hindered the restacking of GO. The RGO interacted with CNT through the van der Waals forces and π–π stacking interaction. The three-dimensional hybrid not only had a high surface area, but also exhibited a good electronic conductivity. A direct electrochemistry of glucose oxidase was obtained on the nanohybrid modified electrode which showed good response for glucose sensing. This study would provide a facile and green method for the preparation of nanohybrid for a wide range of applications including biosensing, super capacitor, and transparent electrode.