Electrochemical Behavior of K3[Fe(CN)6] on the Electrode Coated with Modified Multi‐Walled Carbon Nanotubes
Electrochemical Behavior of K3[Fe(CN)6] on the Electrode Coated with Modified Multi‐Walled Carbon Nanotubes
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DOI：
10.1080/01932690701277682
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发表时间：
2007-04
影响因子：
2.2
通讯作者：
Shi-Zhao Kang;Z. Cui;J. Mu
中科院分区：
文献类型：
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作者：
Shi-Zhao Kang;Z. Cui;J. Mu
研究了K3[Fe(CN)6]在β-环糊精(CD)修饰的多壁碳纳米管(MWNTs)和羧基修饰的多壁碳纳米管(MWNTCoOHs)修饰的ITO电极上的电化学行为。MWNT-COOHs对K3[Fe(CN)6]的氧化还原有很好的电催化作用，而MWNT-Cd对K3[Fe(CN)6]的电化学反应有抑制作用。这可能是由于K3[Fe(CN)6]与环糊精不匹配，阻碍了K3[Fe(CN)6]与碳纳米管的接触。此外，还测量了K3[Fe(CN)6]在不同扫描速度下在MWNT-CoOHs涂层ITO电极上的电化学行为。结果表明，K3[Fe(CN)6]的氧化还原峰电位差和峰电流均随扫描速度的增加而增大。峰电流与扫描速度呈良好的线性关系。
The electrochemical behavior of K3[Fe(CN)6] was studied on an ITO electrode that was coated with β‐cyclodextrin (CD) modified multi‐walled carbon nanotubes (MWNTs) and with carboxyl modified multi‐walled carbon nanotubes (MWNT‐COOHs). MWNT‐COOHs showed an excellent electrocatalytic effect on the redox of K3[Fe(CN)6] while MWNT‐CDs had a subdued effect on the electrochemical response of K3[Fe(CN)6]. It is probably due to mismatching between K3[Fe(CN)6] and cyclodextrin, which hampers the contact of K3[Fe(CN)6] with carbon nanotubes. Moreover, the electrochemical behavior of K3[Fe(CN)6] on the MWNT‐COOHs coated ITO electrode at various scan rates also was measured. The results indicated that both potential difference between redox peaks and peak current of K3[Fe(CN)6] increased with increasing scan rate. A good linearity of peak current versus scan rate was observed.