Porous Carbon Substrate Improving the Sensing Performance of Copper Nanoparticles Toward Glucose

Nanoscale Research Letters

Shuting Kan¹  Lianwen Deng²  Shi Li²  Xiaohui Gao²  Shengxiang Huang²  Hongjian Li²  Zewen Qu²  Wenshuai Feng²  Aimin Guo²  Yan Zhao²  Wei Chen³ 

[1] College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, Hunan, China;School of Physics and Electronics, Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, Central South University, 410083, Changsha, Hunan, China;School of Physics and Electronics, Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, Central South University, 410083, Changsha, Hunan, China;State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China;Niversity of Science and Technology of China, 230029, Hefei, Anhui, China;

关键词: Sensor;    Copper nanoparticles;    Glucose detection;    Electrochemistry;   

DOI  :  10.1186/s11671-021-03579-y

来源: Springer

【 摘 要 】

An accurate sensor to rapidly determine the glucose concentration is of significant importance for the human body health, as diabetes has become a very high incidence around the world. In this work, copper nanoparticles accommodated in porous carbon substrates (Cu NP@PC), synthesized by calcinating the filter papers impregnated with copper ions at high temperature, were designed as the electrode active materials for electrochemical sensing of glucose. During the formation of porous carbon, the copper nanoparticles spontaneously accommodated into the formed voids and constituted the half-covered composites. For the electrochemical glucose oxidation, the prepared Cu NP@PC composites exhibit much superior catalytic activity with the current density of 0.31 mA/cm2 at the potential of 0.55 V in the presence of 0.2 mM glucose. Based on the high electrochemical oxidation activity, the present Cu NP@PC composites also exhibit a superior glucose sensing performance. The sensitivity is determined to be 84.5 μA /(mmol.L) with a linear range of 0.01 ~ 1.1 mM and a low detection limit (LOD) of 2.1 μmol/L. Compared to that of non-porous carbon supported copper nanoparticles (Cu NP/C), this can be reasonable by the improved mass transfer and strengthened synergistic effect between copper nanoparticles and porous carbon substrates.

【 授权许可】

CC BY