title: Immobilization of iron oxide nanoclusters on surface functionalized silicon substrate and their catalytic behavior to synthesize multi-walled carbon nanotubes.
abstract: Multi-walled carbon nanotubes (MWCNTs) were grown using iron oxide nanoclusters (Nc) assisted by self-assembled monolayer (SAM) on substrate. The amine-terminated SAM fabricated on silicon substrate (APTMS/SI) was carried out by UV-treatment and immersed into the FeCI3/HCI aqueous solution. Then, Nc were immobilized onto oxidized SAM silicon substrate (SAMs/Si) through electrostatic interaction between cationic Nc and anionic SAMs/Si. The characterization results clearly show that the well-graphitized MWCNTs were synthesized by using functionalized silicon substrate (Nc/SAMs/Si) as a template having appropriate density of catalyst. These consequences show that SAM containing template is important to achieve the effective layer of catalyst to synthesize MWCNTs in chemical vapor deposition (CVD).
authors.affiliation: BK21 Physics Research Division, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors.forename: Prashanta Dhoj
authors.initials: PD
authors.lastname: Adhikari
authors.forename: Sunghwan
authors.initials: S
authors.lastname: Kim
authors.forename: Sui
authors.initials: S
authors.lastname: Lee
authors.forename: Chong-Yun
authors.initials: CY
authors.lastname: Park
mesh_terms: D002384:Catalysis; D003460:Crystallization / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005290:Ferric Compounds / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008968:Molecular Conformation; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D005290:Ferric Compounds; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; C000499:ferric oxide; D012825:Silicon