Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (4): 985-990.doi: 10.1007/s40242-021-1215-2

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Colorimetric Detection of Glucose Using WO3 Nanosheets as Peroxidase-mimetic Enzyme

SHI Rui, WEI Shuxian, CHENG Shiqi, ZENG Jinmin, WANG Yilin, SHU Xin   

  1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China
  • Received:2021-05-10 Revised:2021-06-30 Online:2022-08-01 Published:2022-07-01
  • Contact: WANG Yilin E-mail:theanalyst@gxu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No.61664002), the Innovation Project of Guangxi Graduate Education, China (No.YCSW2021050) and the Foundation of College Student Innovation Ability Training of Guangxi University, China(No.202110593185).

Abstract: In the present work, WO3 nanosheets(WO3 NSs) were prepared by a facile method at room temperature. The obtained WO3 NSs showed peroxidase-like activity, which could catalyze 3,3',5,5'-tetramethylbenzidine(TMB) to form a blue oxidation product(ox TMB) in the presence of H2O2. Based on this, convenient and sensitive colorimetric methods for the detection of H2O2 and glucose were established. The linear ranges for detecting H2O2 and glucose were 1-200 μmol/L and 1-100 μmol/L, respectively. The limits of the detection of H2O2 and glucose were as low as 0.79 and 0.96 μmol/L, respectively. This method was also successfully applied to the detection of glucose in urine samples. The detection result was consistent with that of the value detected by the clinical method, indicating the potential in clinical diagnosis and biomedical detection.

Key words: WO3 nanosheet, Peroxidase-like activity, Colorimetric detection, H2O2, Glucose