A ternary nanocomposite electrode of polyoxometalate/carbon nanotubes/gold nanoparticles for electrochemical detection of hydrogen peroxide

作者：Guo, Shuyue; Xu, Lin^*; Xu, Bingbing; Sun, Zhixia; Wang, Lihao

来源：Analyst, 2015, 140(3): 820-826.

DOI：10.1039/c4an01734j

• WALLED CARBON NANOTUBES
• GOLD NANOPARTICLES
• TIO2 PHOTOANODES
• PRUSSIAN BLUE
• IONIC-LIQUID
• PHOTOELECTROCHEMICAL PERFORMANCE
• ELECTROCATALYTIC BEHAVIOR
• FILM
• NANOHYBRIDS
• BIOSENSOR

In this work, a nanocomposite film electrode containing polyoxometalate (POM) clusters K6P2W18O62 (P2W18), carbon nanotubes (CNTs) and Au nanoparticles (AuNPs) was fabricated by a smart combination of layer-by-layer (LbL) with the self-assembly technique. The synergistic effect of POM, CNTs and AuNPs on the electrocatalysis of H2O2 was investigated to improve the sensitivity of H2O2 detection. The response of (P2W18/CNTs/P2W18/AuNPs)(4) electrodes to H2O2 was remarkably enhanced due to large active sites and good electron conducting ability. The sensor exhibited a quick response (less than 1 second) to H2O2 with a high sensitivity (596.1 mu Am M-1 cm(-2)), and a low detection limit (52 nM). Based on the respective advantages of POMs, CNTs and AuNPs, the nanocomposite multilayer POMs/CNTs/POMs/AuNPs will have special properties and high potential for application.

• 出版日期2015
• 单位东北师范大学