期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 9, 期 7, 页码 1766-1771出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2007.03.027
关键词
vanadium-oxide nanotubes; template; mixed-valents; electrochemical properties
The electrochemistry of mixed-valent-containing vanadium-oxide nanotubes (VOx-NTs) is first reported. Using dodecylamine and hexadecylamine as templates, two kinds of VOx-NTs were synthesized and characterized. Both VOx-NTs contain V2O3, VO2 and V2O5 species. Dodecylamine-templated VOx-NTs (C-12-VOx-NTs) are much more stable than hexadecylamine-templated VOx-NTs (C-16-VOxNTs). C-12-VOx-NTs demonstrate stable redox behavior at similar to-0.2 V, which is arising from the electrochemical transfer between V(III) and V(IV), whereas C-16-VOx-NTs exhibit unstable and weak redox peaks. In both cases, the reduction reaction of V(V)-V(IV) is never observed. The oxidation peak for V(IV) appeared only after a relatively long time immersion, suggesting that some small molecules such as water intercalate into the layered nanostructures before the electrochemical reaction. The difference may be an origin of the different template-induced the electroactivity of vanadium-oxide species in the nanotube-microenvironment. (C) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据