A non-enzymatic glucose sensor based on the composite of cubic Cu nanoparticles and arc-synthesized multi-walled carbon nanotubes

作者：Zhao, Jiang; Wei, Liangming; Peng, Chonghao; Su, Yanjie; Yang, Zhi; Zhang, Liying; Wei, Hao; Zhang, Yafei^*

来源：Biosensors and Bioelectronics, 2013, 47: 86-91.

DOI：10.1016/j.bios.2013.02.032

• Non-enzymatic
• Glucose sensor
• MWCNTs
• Cubic Cu nanoparticles
• Arc discharge
• SEED

A sort of non-enzymatic glucose sensor is fabricated based on a composite of cubic Cu nanoparticles and arc-synthesized multi-walled carbon nanotubes (MWCNTs) by using a substrate-enhanced electroless deposition (SEED) method. The common glassy carbon (GC) electrode is replaced by the cylindrical deposit that contains abundant MWCNTs as a support electrode. These cylindrical deposits can be synthesized by arc discharge in low pressure air atmosphere. The Cu-MWCNTs electrode shows significantly electrocatalytic activity to the oxidation of glucose in 0.1 M NaOH alkaline solution. The amperometric responses to glucose reveal that the fast response achieves within 1 s, the sensitivity is 922 mu A mM(-1) cm(-2) with a wide linear in the 0.5-7.5 mM concentration range, and the detection limit is 2.0 mu M. The sensor also exhibits high stability and specificity to glucose. Due to the simplicity of the sensor preparation, Cu-MWCNTs electrodes are a good candidate for reliable glucose determination.

• 出版日期2013-9-15
• 单位上海交通大学