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| Carbon Nanotube-supported Cobalt Hexacyanoferrate Nanoporous Networks by Electrodeposition with Excellent Electrocatalytic Response and High Electrochemical Activity |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:carbon nanotubes cobalt hexacyanoferrate vitamin B2 nanoporous film biosensor electrodeposition |
| Author | Institution |
| 罗世忠，李卫娟，李乾和，焦国嵩 |
1.青岛科技大学化学与分子工程学院;2.青岛市环境监测中心站 |
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| Abstract: |
| A cobalt hexacyanoferrate（CoHCF） film was successfully electrodeposited on functionalized multi-wall carbon nanotubes（MWNTs） modified glassy carbon electrodes by scanning the potential between 0 V and 1.1 V at a scan rate of 100 mV/s for 20 consecutive scans in an aqueous electrolyte of 0.5 mol/L KCl, 1 mmol/L CoCl2 and 0.9 mmol/L K3Fe(CN)6.The modified electrodes （MWNTs-CoHCF/GCE） were characterized by scanning electron microscope and cyclic voltammetric methods.It was found that the CoHCF film was covered with the MWNTs.The MWNTs-CoHCF/GCE presented a nanoporous structure with an excellent electrochemical stability,which showed a favorable electron transfer kinetics.The cyclic voltammetric experiment showed that the MWNTs-CoHCF/GCE had a favorable electrochemical activity for the oxidation of vitamin B2 （VB2）,and the peak current was linear over VB2 concentration in the range of 1.2×10-7-2.6×10-7 mol/L with a detection limit（S/N=3） of 8.9×10-8 mol/L. |
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