Floating catalyst CVD synthesis of carbon nanotubes from CpFe(CO)2X (X=Me, I): Poisoning effects of I

The effect of arylferrocene ring substituents on the synthesis of multi-walled carbon nanotubes

“…The data suggest that the Br destroys the catalytic activity of the Fe. Similar effects have been observed when CpFe(CO) 2 I was used as a catalyst [37]. In these reactions the I poisoned the catalyst.…”

CVD synthesis of nitrogen doped carbon nanotubes using ferrocene/aniline mixtures

“…Solutions of toluene and 4-ferrocenylaniline (or ferrocene/aniline) were prepared and transferred to a 10 mL syringe driven by a SAGE pump. The ferrocenyl solutions were then injected into the high temperature zone of the furnace at an injection rate of 0.8 mL/min through a quartz water cooled system [27]. The reactor was then allowed to cool and the carbonaceous material was collected from the walls of the quartz tube.…”

The use of organometallic transition metal complexes in the synthesis of shaped carbon nanomaterials

“…Some of these include (CO) 5 [27], ruthenocene [28], Ru 3 (CO) 12 [29], [Co 2 (CO) 6 RCCR] and other related cobalt organometallic complexes [10d,10e,10f,10g], CpFe(CO) 2 I [30] and Mo(CO) 6 [31]. Clearly, this is still an area ready for exploitation.…”

“…In all the above cases, the presence of the halogen has assisted in forming CNTs and SCNMs. In contrast, the presence of I in an Fe catalyst (CpFe(CO) 2 I) killed the ability of the Fe to catalyse the formation of CNTs [30].…”

“…Most of the studies on shaped carbon materials reported to date relate to the synthesis of CNTs as these are the complexes that have been most sought after. Two reviews by Rao and co-workers describe some early studies on the use of organometallic complexes on CNT synthesis, in particular from their own studies, and provide some discussion of early work in [125]; (b) MWCNTs [30]; (c) DWCNTs [125]; (d) hollow carbon spheres [126]; (e) carbon spheres [127]; (f) nanofibre [128]; (g) nanohorns [11]; and (h) nanocages [129]. the area [5a,19].…”