Investigation of Pt Catalysts Supported on Multi-Walled Carbon Nanotubes with Various Diameters and Lengths |
| |
| Authors: | Ying Liang Jun Li Shi-Zhong Wang Xian-Zhu Fu Qing-Chi Xu Jing-Dong Lin Dai-Wei Liao |
| |
| Affiliation: | (1) The State Key Laboratory of Physical Chemistry on Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Institute of Physical Chemistry, Xiamen University, Xiamen, 361005, China;(2) College of Power Engineering, Chongqing University, Chongqing, 400030, China |
| |
| Abstract: | Platinum electrocatalysts supported on multi-walled carbon nanotubes (MWCNTs) with various diameters and lengths were studied
by using transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV) and Chronoamperometry.
The results indicated that the MWCNTs with smaller diameter generated more amorphous carbon after a sonochemical oxidation
treatment. Compared with the long MWCNTs, the short MWCNTs had more open ends, resulting in high-Pt dispersion and electrocatalytic
activity towards methanol oxidation. Pt nanoparticles supported on short MWCNTs with a diameter of 30–50 nm exhibited the
best Pt dispersion and highest methanol oxidation activity among the catalysts studied. The high activities of the catalysts
based on short MWCNTs were due to both the intrinsic high activity of the ends of MWCNTs and a good Pt distribution. |
| |
| Keywords: | Multi-walled carbon nanotubes Platinum Methanol oxidation Diameter and length |
| 本文献已被 SpringerLink 等数据库收录！ |
|
