Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (12): 1891-1902.DOI: 10.19894/j.issn.1000-0518.220099

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Study of Electrochemical Non-enzyme Glucose Sensor Based on Cu(Ⅱ)Co(Ⅱ) Bimetallic Carbon Nanosheets

Xiao-Mei HUANG1,2,3(), Xiang DENG1,2, Lang-Man XING1, Wei CHEN1, Li SUN1, Xiao-Yu ZHU1   

  1. 1.Department of Chemistry and Chemical Engineering,Sichuan University of Arts and Science,Dazhou 635000,China
    2.Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province,Dazhou 635000,China
    3.Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education,Zigong 643000,China
  • Received:2022-04-01 Accepted:2022-08-31 Published:2022-12-01 Online:2022-12-13
  • Contact: Xiao-Mei HUANG
  • About author:huangxm917@163.com
  • Supported by:
    the Scientific Research Fund of the Sichuan Provincial Science and Technology Department(2019YJ0307);the Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province(TSZW2005);the Opening Project of Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education(LYJ1802);Dazhou Municipal Science Project of Technology Bureau Application Foundation(18YYJC0002);the National University Innovation and Entrepreneurship Training Program(202110644011);the Scientific Research Program for College Students of Sichuan University of Arts and Sciences in 2021(X2021Z021)

Abstract:

CuCo-MOF nanofibers are synthesized by one-step solvent blending process at room temperature. Then CuCo-MOF nanofibers are used as the precursors, carbon nanosheets (Cu(Ⅱ)Co(Ⅱ)@C) uniformly loaded with nano-sized copper oxide and cobalt oxide are obtained by calcination at high temperature in air. Cu(Ⅱ)Co(Ⅱ)@C is modified on the glassy carbon electrode to directly catalyze glucose in alkaline solution. Because CuO and CoO are uniformly and firmly embedded on the carbon nanosheets, the agglomeration of catalyst is prevented, which greatly improves the specific surface area, and increases the catalytic active site. Meanwhile, due to the synergistic effect of copper and cobalt bimetals in the carbon nanosheet material, the enzyme free glucose sensor has excellent electrical conductivity and excellent catalytic performance. The detection range of the non-enzymatic electrochemical glucose sensors for glucose is 0.03 μmol/L~13.6 mmol/L, the detection limit is 0.01 μmol/L (S/N=3), and the sensitivity is 10.56 mA·L/(cm2·mmol). In addition, the non-enzyme sensor also has good anti-interference and high stability.

Key words: Metal organic frameworks, Cu(Ⅱ)CO(Ⅱ) bimetallic carbon based nanosheets, Non-enzymatic glucose sensors, Synergistic effect

CLC Number: