Polyamidoamine (PAMAM) dendrimers are used as carriers to deliver complexed Fe(III) ions uniformly onto silicon oxide substrates for the formation of iron oxide nanoparticles with a narrow diameter in the range of 1-2 nm. Chemical vapor deposition (CVD) synthesis with these nanoparticles affords single-walled carbon nanotubes (SWNTs) with a diameter distribution in the range of 1-2 nm, much narrower than that for SWNTs grown from commonly used powder-supported catalyst (1-5 nm) and from artificial ferritin derived nanoparticles (1-3 nm). Thus, the current work represents a step further toward the synthesis of monodispersed SWNTs via the approach of chemically controlling the formation of discrete catalyst nanoparticles.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry