Novel 3-Dimensional Cotton-Like Graphenated-Carbon Nanotubes Synthesized via Floating Catalyst Chemical Vapour Deposition Method for Potential Gas-Sensing Applications

Figure 11

The G-CNT-proposed mechanism: (a) the CNTs grew far away from the catalyst leading to the defective structure; (b) the defect that forms due to removal of the amorphous carbon; (c) the defective site becomes a nucleation site as the excessive carbon source was fed into the reactor.

(a)

(b)

(c)