Chem. J. Chinese Universities ›› 2017, Vol. 38 ›› Issue (4): 554.doi: 10.7503/cjcu20160693

• Analytical Chemistry • Previous Articles     Next Articles

Glucose Biosensor Based on Dy2(MoO4)3-AuNPs Composite Nanomaterial

HUANG Haiping*(), YUE Yafeng, XU Liang, LÜ Lianlian, HU Yongmei   

  1. School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
  • Received:2016-09-29 Online:2017-04-10 Published:2017-03-23
  • Contact: HUANG Haiping E-mail:sea-ping@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos 21465013, 21005034), the China Postdoctoral Science Foundation(No 2014M551550), the Natural Science Foundation of Jiangxi Province, China(No 20114BAB213014) and the Qingjiang Excellent Young Talents, Jiangxi University of Science and Technology, China

Abstract:

Nanometer material of dysprosium molybdate[Dy2(MoO4)3] was hydrothermally synthsized and employed for the fabrication of glucose biosensor by immobilizing glucose oxidase(GOD) on the Dy2(MoO4)3-AuNPs composite nanomaterial. Dy2(MoO4)3 and Dy2(MoO4)3-AuNPs were characterized by transmission electron microscopy(TEM), UV-Vis spectrometry and energy-dispersive spectrometry(EDS). The electrochemical behavior of the biosensor was studied via the electrochemical impedance spectroscopy(EIS) and cyclic voltammetry(CV). The experimental results indicated that Dy2(MoO4)3-AuNPs nanocomposite material presented good biocompatibility for GOD and could accelerate the electron transfer rate between the immobilized GOD and the electrode. The biosensor showed a good linear relationship in the concentration range of glucose from 0.01 mmol/L to 1.0 mmol/L with the lowest detection limit of 3.33 μmol/L(S/N=3). Additionally, the biosensor owned satisfying stability and reproducibility.

Key words: Hydrothermal method, Dysprosium molybdate, Gold nanoparticles, Glucose oxidase, Biosensor

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