Journal of Inorganic Materials ›› 2019, Vol. 34 ›› Issue (2): 152-158.doi: 10.15541/jim20180200

• RESEARCH PAPER • Previous Articles     Next Articles

Rice-like CuO Chemically Modified Electrode: Preparation and Detection for Glucose

Min DENG(), Qi JIANG(), Zhi-Hong DUAN, Qing-Qing LIU, Li JIANG, Xiao-Ying LU   

  1. Key Laboratory of Advanced Technologies of Materials (Ministry of Education of China), School of Life Science and Engineering, School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2018-04-27 Revised:2018-05-28 Online:2019-02-20 Published:2019-01-24
  • About author:DENG Min. E-mail: 3105a@swjtu.cn
  • Supported by:
    National Natural Science Foundation of China (50907056, 51602266);Sichuan Key Research and Development Program (2017GZ0109);Sichuan Science and Technology Support Projects (2016GZ0273, 2016GZ0275);Sichuan Academic and Technical Leaders Training Fund

Abstract:

A novel rice-like copper oxide (CuO) was synthesized without using soft template and alkali by hydrothermal and in-situ decomposition methods. This rice-like CuO material was made into the chemically modified electrode (CME) with Nafion solution for non-enzymatic glucose sensing. Structure and morphology of the prepared material and electrode were characterized by X-ray diffraction and scanning electron microscopy. Electrochemical performances of the obtained electrodes were investigated by linear sweep voltammetry, cyclic voltammetry, amperometric response, and electrochemical impedance spectroscopy. Results show that morphology of the obtained CuO particle is similar to rice grain. And its length and diameter are between 0.5-1.0 μm and 250-320 nm, respectively. The CME with 0.35 mg rice-like CuO (with 0.22 cm2 electrode surface area) has an obvious current response for glucose with the linear range from 0.0357 to 2.361 mmol/L, the linear equation Ipa(mA)= -0.00187+0.05239 c(mmol/L) (R2=0.998), the detection limit 0.0647 μmol/L, and the sensitivity 950.36 μA·L/(mmol·cm2). Therefore, the prepared CuO CME shows a promise selectivity and reliability for detecting glucose.

Key words: rice-like CuO, chemically modified electrode, glucose, detection

CLC Number: 

  • O657