中文

Enhanced peroxidase-like activity of MMT-supported cuprous oxide nanocomposites toward rapid colorimetric estimation of H2O2

Hits:

  • Key Words:colorimetric; cuprous oxide; hydrogen peroxide; montmorillonite; peroxidase

  • Abstract:Nanocomposites based on Cu2O and Ca-montmorillonite (Ca+-MMT) with different composition were successfully prepared via a simple hydrothermal method. The as-prepared Cu2O-MMT nanocomposites can rapidly catalytically oxidize the colorless chromogenic substrate, 3,3 ',5,5 '-tetramethylbenzydine (TMB) into blue oxTMB with the aid of the H2O2 only in 30 s, which were observed by the naked eye. The reaction catalyzed by the Cu2O-MMT nanocomposites followed the Michaelis-Menten kinetics. Compared to the MMT or Cu2O alone, Cu2O-MMT with different mass ratio exhibited an enhanced peroxidase-like activity. The fabricated H2O2 sensor exhibited a good response to H2O2 with a linear detection range from 3 to 80 mu M as well as a detection limit of 2.395 mu M. Taking the advantages of the Cu2O-MMT nanocomposites, including outstanding peroxidase-like activity and high sensitivity for colorimetric detection of H2O2, a colorimetric sensor based on the Cu2O-MMT nanocomposites was designed and used to rapidly detect H2O2 in a short time.

  • Volume:33

  • Issue:2

  • Translation or Not:no


Laoshan Campus-99 Songling Road, Qingdao City, Shandong Province
Sifang Campus-No.53 Zhengzhou Road, Qingdao City, Shandong Province
Sino-German International Cooperation Zone (Sino-German Campus)-No. 3698 Tuanjie Road, West Coast New District, Qingdao City, Shandong Province
Gaomi Campus-No. 1 Xingtan West Street, Gaomi City, Shandong Province
Jinan Campus-No. 80 Wenhua East Road, Jinan City, Shandong Province ©2015 Qingdao University of Science and Technology
Administrator email: master@qust.e
Click:
  MOBILE Version

The Last Update Time:..