Supercritical Fluid Fabrication of Metal Nanowires and Nanorods Templated by Multiwalled Carbon Nanotubes


  • This work was supported by the Idaho-NSF-EPSCoR program, the ARO-DEPSCoR program (DAAD 19-01-1-0458), and an LDRD program at Pacific Northwest National Laboratory (PNNL). The work was partially performed at the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by U.S. DOE’s Office of Biological and Environmental Research and located at PNNL. PNNL is operated for the Department of Energy by Battelle.


Metal nanorods and nanowires (see Figure) have been synthesized using multiwalled carbon nanotubes (MWCNTs) as templates and supercritical CO2 as the reaction medium. This rapid, direct, and clean approach can also be used to fabricate other metal/CNT composites and to coat the CNTs with metal films or nanoparticles.