Electrochemical reduction of oxygen on double-walled carbon nanotube modified glassy carbon electrodes in acid and alkaline solutions
Electrochemical reduction of oxygen on double-walled carbon nanotube modified glassy carbon electrodes in acid and alkaline solutions
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DOI：
10.1016/j.elecom.2010.04.021
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发表时间：
2010-07
影响因子：
5.4
通讯作者：
I. Kruusenberg;L. Matisen;H. Jiang;Maija Huuppola;K. Kontturi;K. Tammeveski
中科院分区：
文献类型：
--
作者：
I. Kruusenberg;L. Matisen;H. Jiang;Maija Huuppola;K. Kontturi;K. Tammeveski
采用旋转圆盘电极（RDE）法研究了双壁碳纳米管（DWCNT）修饰玻碳（GC）电极在酸性和碱性介质中的氧还原反应。通过透射电子显微镜（TEM）和X射线光电子能谱（XPS）研究了DWCNT样品的表面形貌和组成。采用Nafion和非离子表面活性剂Triton X-100作为分散剂制备了DWCNTs的水悬浮液。RDE结果表明，DWCNT修饰的GC电极在碱性溶液中是氧还原的活性催化剂。在酸性介质中，DWCNT/GC电极对O2还原的电催化性能较差，表明所研究的DWCNT材料中缺乏金属催化剂杂质。氧还原行为的DWCNTs是类似的多壁碳纳米管（MWCNTs）在我们以前的研究中观察到的。
The oxygen reduction reaction has been investigated on double-walled carbon nanotube (DWCNT) modified glassy carbon (GC) electrodes in acid and alkaline media using the rotating disk electrode (RDE) method. The surface morphology and composition of DWCNT samples was examined by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Aqueous suspensions of DWCNTs were prepared using Nafion and non-ionic surfactant Triton X-100 as dispersing agents. The RDE results indicated that the DWCNT modified GC electrodes are active catalysts for oxygen reduction in alkaline solution. In acid media DWCNT/GC electrodes possess poor electrocatalytic properties for O2reduction which indicates lack of metal catalyst impurities in the DWCNT material studied. The oxygen reduction behaviour of DWCNTs was similar to that of multi-walled carbon nanotubes (MWCNTs) observed in our previous studies.