Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (10): 1211-1220.DOI: 10.11944/j.issn.1000-0518.2020.10.200064

• Full Papers • Previous Articles    

Preparation of Imm-Fe3+-IL with Peroxidase Activity and Its Colorimetric Determination of H2O2 and Glucose

YU Changmua, ZHANG Rongb, LU Xiaoluana, YANG Mina*, PENG Qianrongc*   

  1. aSchool of Pharmacy,Guizhou University,Guiyang 550025,China;
    bCollege of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China;
    cTechnology Center of Guizhou China Tobacco Industry Co.,Ltd,Guiyang 550009,China
  • Received:2020-03-12 Published:2020-10-01 Online:2020-09-30
  • Contact: YANG Min, professor; Tel:0851-85588075; E-mail:2578973180@qq.com; Research interests:synthesis and application of catalytic materials
    Co-corresponding author:PENG Qianrong, associate professor; Tel:0851-83981462; E-mail:3435391@qq.com; Research interests:tobacco chemistry and engineering
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21562014), Guizhou Zhongyan Technology Project(Qianyan Gongji [2015] No.8)

Abstract: The Imm-Fe3+-IL nanomaterials prepared by the sol-gel method have peroxidase-like activity,which can catalyze the rapid oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) with hydrogen peroxide (H2O2) to produce corresponding color changes. The steady-state kinetic analysis shows that the catalytic kinetics of Imm-Fe3+-IL follows the typical Michaelis-Menten model, and the Ping-Pong mechanism. Compared with horseradish peroxidase (HRP), Imm-Fe3+-IL nanomaterials have stronger affinity. Combined with glucose oxidase, a colorimetric detection method for H2O2 and glucose is established. The results show that the concentration of H2O2 and glucose shows a good linear relationship with the absorbance of the reaction system. The linear range of H2O2 is 1~200 μmol/L, the linear range of glucose is 10~200 μmol/L, and the limits of detection (LOD) are 0.35 and 3.31 μmol/L for H2O2 and glucose, respectively.

Key words: ionic liquid, peroxidase-like, colorimetric detection, H2O2, glucose