Patent ID: 8343451
Filing Date: 2013-01-01
Classification: B01J,B82Y,C01B,Y10T

Abstract:
1. A method for making a carbon nanotube film, the method comprising: (a) providing a circular substrate having a surface, wherein material of the substrate is glass, quartz, silicon, or aluminum oxide; (b) forming a catalyst layer on the surface of the circular substrate, and the catalyst layer having two substantially parallel sides, wherein the catalyst layer is away from a border of the surface, wherein step (b) is executed by the steps of: (c) annealing the catalyst layer in air at a high temperature; (d) heating the annealed catalyst layer up to a predetermined reaction temperature in a furnace with a protective gas therein, and supplying a carbonaceous gas into the furnace to grow a carbon nanotube array from the circular substrate, the carbon nanotube array having two substantially parallel side faces; and (e) drawing a carbon nanotube film from the carbon nanotube array along a drawing direction substantially parallel to the two substantially parallel side faces of the carbon nanotubc array.