An ionic liquid-type carbon paste electrode and its polyoxometalate-modified properties
An ionic liquid-type carbon paste electrode and its polyoxometalate-modified properties
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DOI：
10.1016/j.elecom.2005.09.018
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发表时间：
2005-12
影响因子：
5.4
通讯作者：
Hongtao Liu;Ping He;Zhiying Li;Chun-lin Sun;Lihong Shi;Y. Liu;G. Zhu;Jinghong Li
中科院分区：
文献类型：
--
作者：
Hongtao Liu;Ping He;Zhiying Li;Chun-lin Sun;Lihong Shi;Y. Liu;G. Zhu;Jinghong Li
用导电的室温离子液体代替不导电的有机粘结剂制备碳糊电极。这种新电极由于其增强的导电性而呈现出对电活性基底的非常大的电流响应。通过将Keggin型磷钼杂多酸盐PMo 12 O 40 3-（PMo 12）均匀分散在大体积碳中，对碳糊电极进行了体相修饰，使其对亚硝酸根的还原具有良好的电催化活性。研究表明，所使用的疏水性离子液体在碳糊电极中形成了一个良好的电荷转移桥，促进了还原型PMo 12介体的电子吸收，从而提高了电极的多电子催化能力。以离子液体为粘结剂的碳糊电极及其本体修饰电极具有优异的性能，在物理化学和电分析化学领域具有良好的应用前景。
The replacement of a non-conductive organic binder with a conductive room temperature ionic liquid in fabricating carbon paste electrode has been made. This new electrode due to its enhanced conductivity presented very large current response from electroactive substrates. The novel carbon paste electrode was bulk-modified via the uniform dispersion of Keggin-type phospho polyoxomolybdate PMo12O403-(PMo12) in bulky carbons, which possessed excellent electrocatalytic activity for the reduction of nitrite. The pronounced multi-electron catalytic ability was ascribed to the used hydrophobic ionic liquid which constructed an excellent charge-transfer bridge in the bulk of carbon paste electrode, thus facilitated the intake of electrons from reduced PMo12mediators. In view of their prominent properties, the carbon paste electrode using ionic liquid binder and its bulk-modified electrode take on good prospects of the application in physical chemistry and electroanalytical chemistry fields.