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

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 µμmol/L~13. 6 mmol/L， the detection limit is 0. 01 µμmol/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. © 2022, Science Press (China). All rights reserved.