Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (3): 442.doi: 10.7503/cjcu20150881

• Analytical Chemistry • Previous Articles     Next Articles

Electrodeposition of Platinum Nanoparticles on MgAl-layered Double Hydroxide Modified Indium Tin Oxide Electrode for Electrochemical Glucose Biosensor

XU Liang, LIN Youqin, CHEN Xu*(), LU Yanluo, YANG Wensheng   

  1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2015-11-19 Online:2016-03-10 Published:2016-01-24
  • Contact: CHEN Xu
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.201175009) and the Fundamental Research Funds for the Central Universities of China(No;YS1406)


MgAl-layered double hydroxide(MgAl-LDH) nanoparticles were synthesized by separate nucleation and aging steps. The MgAl-LDH nanoparticles were then immobilized on the surface of clean indium tin oxide(ITO) electrode. Electrodeposition of platinum nanoparticles(PtNPs) on the MgAl-LDH modified ITO electrode was carried out by electrochemical reduction of PtCl62-. The obtained PtNPs/MgAl-LDH modified ITO electrodes exhibited high electrocatalysis activity for H2O2. After the glucose oxidase(GOD) was further immobilized on the above modified electrode, such prepared electrode was employed as the enzyme electrode for glucose detection. The results showed that the GOD/PtNPs/MgAl-LDH modified ITO electrodes had obviously enhanced the response sensitivity of the glucose biosensor and lowered the detection limit when detecting the H2O2 liberated in the enzymatic reaction between GOD and glucose.

Key words: Platinum nanoparticles, MgAl-layered double hydroxide, Electrodeposition, Electrochemical glucose biosensor

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