CNTs’ array growth using the floating catalyst-CVD method over different substrates and varying hydrogen supply

Pd Catalysts Supported on Bamboo-Like Nitrogen-Doped Carbon Nanotubes for Hydrogen Production

“…Such an effect of N/C ratio on the nitrogen content in N-CNTs was described by other authors for different reaction mixtures [24,26,27]. In turn, a decrease in the yield of N-CNTs is related to deactivation of the catalyst due to its encapsulation ( Figure 1), which has been reported by many authors for the CVD synthesis of N-CNTs and other carbon materials [25,26,[28][29][30]. Before measuring the activity, the catalyst was reduced in a 10% Н2/He mixture at 200 °С for 1 h. The apparent turnover frequency (TOF) was calculated as a ratio of the reaction rate measured at low (<20%) conversions to the total number of palladium atoms in the catalysts.…”

Initial competing chemical pathways during floating catalyst chemical vapor deposition carbon nanotube growth

“…14 FCCVD sublimates an organometallic precursor, most commonly ferrocene (Fc), in a flow of carrier gases such as N 2 and other gases such as H 2 and/or additional growth precursors. This feedstock mixture is either injected into a hot reaction chamber, typically around 1100-1300 K, or vaporized before being carried into it via a heated process line (for example, both methods have seen success for commonly used Fc-toluene solutions), 15,16 in which it decomposes and reacts to form SWCNTs under a laminar flow regime. 15 The morphology and properties of SWCNTs synthesized via FCCVD can be controlled via the identity and concentration of the growth precursor, as well as that of the catalyst.…”

Surface free energy and wettability properties of transparent conducting oxide-based films with Ag interlayer

“…In fact, one of the main factors behind the texture and morphology of a film was reported to be substrate-adatom interactions [63,64]. In this context, many reports mentioned the effect of substrate crystallinity on the film morphology [65][66][67]. For instance, Yoon et al prepared BaTiO 3 films on Si, InSb and ITO-coated glass substrates and reported that the topography of the deposited films strongly depend on the substrate crystallinity, especially for high temperature depositions [67].…”