Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (04): 121-126.doi: 10.13475/j.fzxb.20200704206

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation and electrochemical properties of carbon fiber fabric sensors co-modified by cobalt phthalocyanine and carbon nanotubes

ZHANG Runke, LÜ Wangyang(), CHEN Wenxing   

  1. National Engineering Laboratory for Textile Fiber Materials & Processing Technology, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2020-07-17 Revised:2020-12-29 Online:2021-04-15 Published:2021-04-20
  • Contact: Lü Wangyang E-mail:luwy@zstu.edu.cn

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Abstract:

In order to explore the application of cobalt phthalocyanine (CoPc)/carbon nanotube (CNT) flexible glucose sensors for glucose detection, a flexible carbon fiber fabric (CFT) glucose sensor based on CoPc and CNT modification were prepared. The Ag/AgCl reference electrode and platinum counter electrode of electrochemical workstation were used to form the three-electrode glucose sensor. The modified electrode was characterized by scanning electron microscope, and the electrochemical properties of the glucose sensor was studied by cyclic voltammetry, electrochemical impedance spectroscopy and time-current curve. The results show that the modified electrode has good conductivity and fast electron transfer capability, and its linear range for glucose detection is found to be 4×10-3-2.6 mmol/L, the detection limit can be as low as 1.4 μmol/L (signal-noise ratio is 3), and the sensitivity is as high as 231 μA·L/mmol. In addition, the modified electrode has good repeatability in detecting glucose, and the responsive current could still reach 94.6% of the initial value after ten cyclic measurements. It show strong anti-interference performance against fructose, sucrose, lactose, galactose, ascorbic acid, dopamine, uric acid and other substances.

Key words: cobalt phthalocyanine, carbon nanotubes, carbon fiber fabric, electrochemical property, glucose detection, sensor

CLC Number: 

  • O657.15

Fig.1

SEM images of different modified electrodes"

Fig.2

EDS spectrum of CoPc/CNT/CFT modified electrode"

Fig.3

CV (a) and EIS (b) curves of different modified electrodes"

Fig.4

CV curves of different modified electrodes. (a)CV curves of CFT electrodes in different concentrations of glucose;(b)CV curves of CoPc/CFT and CoPc/CNT/CFT modified electrodes after adding glucose"

Fig.5

CV curves of CoPc/CNT/CFT modified electrodes under different scan rate"

Fig.6

Amperometric response curves of CoPc/CNT/CFT modified electrode"

Fig.7

Correlation curve between glucose concentration and response current of CoPc/CNT/CFT modified electrode"

Fig.8

Repeatability test of glucose detection by CoPc/CNT/CFT modified electrode"

Fig.9

Amperometric responds of CoPc/CNT/CFT modified electrode with glucose and interferers"

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