原位聚乙烯亚胺和甲酸导向形成具有优异电催化活性的铂纳米粒子/多壁碳纳米管杂化材料。
In situ PEI and formic acid directed formation of Pt NPs/MWNTs hybrid material with excellent electrocatalytic activity.
作者信息
Li Jing, Yang Wen, Zhu Hui, Wang Xiaolei, Yang Fan, Zhang Bailin, Yang Xiurong
机构信息
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
出版信息
Talanta. 2009 Aug 15;79(3):935-9. doi: 10.1016/j.talanta.2009.05.029. Epub 2009 May 27.
A hybrid material based on Pt nanoparticles (Pt NPs) and multi-walled carbon nanotubes (MWNTs) was fabricated with the assistance of PEI and formic acid. The cationic polyelectrolyte PEI not only favored the homogenous dispersion of carbon nanotubes (CNTs) in water, but also provided sites for the adsorption of anionic ions PtCl(4)(2-) on the MWNTs' sidewalls. Deposition of Pt NPs on the MWNTs' sidewalls was realized by in situ chemical reduction of anionic ions PtCl(4)(2-) with formic acid. The hybrid material was characterized with TEM, XRD and XPS. Its excellent electrocatalytic activity towards both oxygen reduction in acid media and dopamine redox was also discussed.
在聚乙烯亚胺（PEI）和甲酸的辅助下，制备了一种基于铂纳米颗粒（Pt NPs）和多壁碳纳米管（MWNTs）的杂化材料。阳离子聚电解质PEI不仅有利于碳纳米管（CNTs）在水中的均匀分散，还为阴离子PtCl(4)(2-)在MWNTs侧壁上的吸附提供了位点。通过用甲酸原位化学还原阴离子PtCl(4)(2-)，实现了Pt NPs在MWNTs侧壁上的沉积。用透射电子显微镜（TEM）、X射线衍射（XRD）和X射线光电子能谱（XPS）对该杂化材料进行了表征。还讨论了其在酸性介质中对氧还原和多巴胺氧化还原的优异电催化活性。
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