Rational Modification of a Metallic Substrate for CVD Growth of Carbon Nanotubes.

ABSTRACT: Growth of high quality, dense carbon nanotube (CNT) arrays via catalytic chemical vapor deposition (CCVD) has been largely limited to catalysts supported on amorphous alumina or silica. To overcome the challenge of conducting CNT growth from catalysts supported on conductive substrates, we explored a two-step surface modification that involves ion beam bombardment to create surface porosity and deposition of a thin Al_xO_y barrier layer to make the surface basic. To test the efficacy of our approach on a non-oxide support, we focus on modification of 316 stainless steel (SS), a well-known inactive substrate for CNT growth. Our study reveals that ion beam bombardment of SS has the ability to reduce film thickness of the Al_xO_y barrier layer required

SUBMITTER: Li X 

PROVIDER: S-EPMC5847581 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature