Research / 2018 / Article / Fig 1

Research Article

Catalyst-Free In Situ Carbon Nanotube Growth in Confined Space via High Temperature Gradient

Figure 1

Schematic of the catalyst-free, in situ CNT formation method in the long 1D confined channels of C-wood by Joule heating without the need for an external carbon source. Numerous multiwall CNTs were grown in the channels (i.e., vessels and lumina) of C-wood after 1 min of Joule heating at ~2500 K.