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