ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, New South Wales 2522, Australia.
Nanoscale. 2010 Feb;2(2):282-6. doi: 10.1039/b9nr00140a. Epub 2009 Oct 12.
Microwave-assisted heating of functionalized, single-wall carbon nanotubes (FCNTs) in ethylene glycol solution containing H(2)PtCl(6), led to the reductive deposition of Pt nanoparticles (2.5-4 nm) over the FCNTs, yielding an active catalyst for proton-exchange membrane fuel cells (PEMFCs). In single-cell testing, the Pt/FCNT composites displayed a catalytic performance that was superior to Pt nanoparticles supported by raw (unfunctionalized) CNTs (RCNTs) or by carbon black (C), prepared under identical conditions. The supporting single-wall carbon nanotubes (SWNTs), functionalized with carboxyl groups, were studied by thermogravimetric analysis (TGA), cyclic voltammetry (CV), and Raman spectroscopy. The loading level, morphology, and crystallinity of the Pt/SWNT catalysts were determined using TGA, SEM, and XRD. The electrochemically active catalytic surface area of the Pt/FCNT catalysts was 72.9 m(2)/g-Pt.
微波辅助加热功能化的单壁碳纳米管(FCNTs)在乙二醇溶液中含有 H(2)PtCl(6),导致 Pt 纳米粒子(2.5-4nm)在 FCNTs 上的还原沉积,得到质子交换膜燃料电池(PEMFCs)的活性催化剂。在单电池测试中,Pt/FCNT 复合材料表现出优于在相同条件下制备的由原始(未功能化)碳纳米管(RCNTs)或碳黑(C)支撑的 Pt 纳米粒子的催化性能。用热重分析(TGA)、循环伏安法(CV)和拉曼光谱研究了用羧基功能化的支撑单壁碳纳米管(SWNTs)。使用 TGA、SEM 和 XRD 确定了 Pt/SWNT 催化剂的负载水平、形态和结晶度。Pt/FCNT 催化剂的电化学活性催化表面积为 72.9m(2)/g-Pt。