Synthesis of Nitrogen-Doped Carbon Nanotubes Using Injection-Vertical Chemical Vapor Deposition: Effects of Synthesis Parameters on the Nitrogen Content

Table 1

XPS determined elemental composition of N-CNTs (at.%) for low and high catalyst loadings.

Elements (at.%)	Fe	O	C	N	Si
Low catalyst loading; (5 mg/mL)	0.6	3	92	3.8	1.3
High catalyst loading; (15 mg/mL)	0.3	2	94	3.1	0.4