Mu Yongyan, Liang Hanpu, Hu Jinsong, Jiang Li, Wan Lijun
Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100080, China.
J Phys Chem B. 2005 Dec 1;109(47):22212-6. doi: 10.1021/jp0555448.
We report a novel process to prepare well-dispersed Pt nanoparticles on CNTs. Pt nanoparticles, which were modified by the organic molecule triphenylphosphine, were deposited on multiwalled carbon nanotubes by the organic molecule, which acts as a cross linker. By manipulating the relative ratio of Pt nanoparticles and multiwalled carbon nanotubes in solution, Pt/CNT composites with different Pt content were achieved. The so-prepared Pt/CNT composite materials show higher electrocatalytic activity and better tolerance to poisoning species in methanol oxidation than the commercial E-TEK catalyst, which can be ascribed to the high dispersion of Pt nanoparticles on the multiwalled carbon nanotube surface.
我们报道了一种在碳纳米管上制备分散良好的铂纳米颗粒的新方法。经有机分子三苯基膦修饰的铂纳米颗粒，通过作为交联剂的有机分子沉积在多壁碳纳米管上。通过控制溶液中铂纳米颗粒与多壁碳纳米管的相对比例，获得了具有不同铂含量的铂/碳纳米管复合材料。如此制备的铂/碳纳米管复合材料在甲醇氧化中表现出比市售E-TEK催化剂更高的电催化活性和对中毒物质更好的耐受性，这可归因于铂纳米颗粒在多壁碳纳米管表面的高分散性。
