Catalytically active nanocomposites of electronically coupled carbon nanotubes and platinum nanoparticles formed via vacuum filtration

摘要

Vacuum filtration is employed to fabricate nanocomposite films of single-walled carbonnanotubes and platinum nanoparticles. Characterization by means of x-ray diffraction, electronmicroscopy, optical spectroscopy, Raman spectroscopy, electrical conductivity measurements,and cyclic voltammetry reveals a well-dispersed morphology and strong electronic couplingbetween the carbon nanotubes and the platinum nanoparticles. These nanocomposite films arecatalytically active and undergo electrical conductivity modulation in the presence of hydrogen,which suggests their utility in a variety of applications including ones in fuel cells, catalysts,and sensors.