title: A model for nucleation and growth of single wall carbon nanotubes via the HiPcO process: a catalyst concentration study.
abstract: Using the High Pressure carbon monoxide (HiPco) reactor we conducted an experiment on the effects of changing the catalyst concentration. With each catalyst concentration tested the resulting raw HiPco material was characterized for average SWNT lengths, SWNT diameters, residual iron particle size, and large fullerene content. We were able to determine trends in each of these characteristics as the catalyst concentration was changed. As the catalyst concentration was decreased SWNT lengths increased, SWNT diameters increased, the residual iron particle size increased, and the large fullerene content decreased. From these trends we have developed a Competitive Growth model for nucleation and growth of SWNTs via the HiPco process.
authors.affiliation: Department of Physics, Rice University, Houston, TX 77005, USA.
authors.forename: Robert L
authors.initials: RL
authors.lastname: Carver
authors.forename: Haiqing
authors.initials: H
authors.lastname: Peng
authors.forename: Anil K
authors.initials: AK
authors.lastname: Sadana
authors.forename: Pasha
authors.initials: P
authors.lastname: Nikolaev
authors.forename: Sivaram
authors.initials: S
authors.lastname: Arepalli
authors.forename: Carl D
authors.initials: CD
authors.lastname: Scott
authors.forename: W E
authors.initials: WE
authors.lastname: Billups
authors.forename: Robert H
authors.initials: RH
authors.lastname: Hauge
authors.forename: Richard E
authors.initials: RE
authors.lastname: Smalley
mesh_terms: D002248:Carbon Monoxide / Q000737:chemistry*; D002384:Catalysis; D037741:Fullerenes; D046911:Macromolecular Substances; D046529:Microscopy, Electron, Transmission; D008956:Models, Chemical; D049329:Nanostructures / Q000032:analysis; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000032:analysis / Q000737:chemistry*; D016011:Normal Distribution; D011312:Pressure
chemical_list: D037741:Fullerenes; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D002248:Carbon Monoxide