This work was financially supported by the National Natural Science Foundation of China (No. 20 435 010) and the 863 Project (2006AA05Z123). Supporting Information is available online from Wiley InterScience or from the author.
Template Synthesis of Aligned Carbon Nanotube Arrays using Glucose as a Carbon Source: Pt Decoration of Inner and Outer Nanotube Surfaces for Fuel-Cell Catalysts†
Article first published online: 11 MAR 2008
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 18, Issue 6, pages 959–964, March 25, 2008
How to Cite
Wen, Z., Wang, Q. and Li, J. (2008), Template Synthesis of Aligned Carbon Nanotube Arrays using Glucose as a Carbon Source: Pt Decoration of Inner and Outer Nanotube Surfaces for Fuel-Cell Catalysts. Adv. Funct. Mater., 18: 959–964. doi: 10.1002/adfm.200700707
- Issue published online: 26 MAR 2008
- Article first published online: 11 MAR 2008
- Manuscript Revised: 3 AUG 2007
- Manuscript Received: 2 JUL 2007
- National Natural Science Foundation of China. Grant Number: 20 435 010
- 863 Project. Grant Number: 2006AA05Z123
A facile method is developed to synthesize aligned arrays of open-ended carbon nanotubes (CNTs) via in situ glucose polymerization in the inner pores of anodic aluminum oxide templates under hydrothermal conditions, followed by carbonization at high temperature. Pt nanoparticles are decorated on the surfaces of the as-prepared CNTs using the incipient wet method based on the use of NaBH4 as a reductant. Characterization of the resulting structures by transmission electron microscopy and field-emission scanning electron microscopy demonstrates that the Pt nanoparticles are anchored on both the inner and outer walls of CNTs, thus giving rise to a shell–core–shell-like nanotube composite. The electrocatalytic properties of the Pt–CNT–Pt electrodes are investigated for methanol oxidation by cyclic voltammetry and chronoamperometric measurements. It is found that the hybrid electrodes show superior catalytic performance compared to commercial carbon-black-supported Pt. The increased catalytic efficiency of Pt might be a result of the unique morphology of these structures.