Controllable pt nanoparticle deposition on carbon nanotubes as an anode catalyst for direct methanol fuel cells.
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.
Mu
Yongyan
Y
Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100080, China.
Liang
Hanpu
H
Hu
Jinsong
J
Jiang
Li
L
Wan
Lijun
L
D002384:Catalysis; D004566:Electrodes; D000432:Methanol / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009943:Organophosphorus Compounds / Q000737:chemistry; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties
D037742:Nanotubes, Carbon; D009943:Organophosphorus Compounds; C061896:triphenylphosphine; D010984:Platinum; D000432:Methanol