| 摘要 |
PROBLEM TO BE SOLVED: To provide a new method which enables the further uniform formation of a catalyst particulate which is the base for growing a carbon nanotube on a substrate and a synthetic method for CNT whose uniformity is upgraded. SOLUTION: This is a method for forming a catalyst particulate which comprises of a step for coating a solution of catalyst metal precursor on a substrate, a step for freeze-drying the solution of catalyst metal precursor coating the substrate, and a step for reducing the freeze-dried catalyst metal precursor to a catalyst metal. The method for forming the catalyst particulate is able to minimize flocculation and/or recrystallization of the catalyst particulate by freeze-drying the solution of catalyst metal precursor. Thus, the catalyst particulate is able to uniformly be distributed on the substrates having a very homogeneous particle size. COPYRIGHT: (C)2006,JPO&NCIPI |
