Control of physical properties of carbon nanofibers obtained from coaxial electrospinning of PMMA and PAN with adjustable inner/outer nozzle-ends

Table 3 BET surface area (S _BET), total pore volume (V _T), and average pore diameter of the HCNFs and CNFs

Sample	S _BET (m² g⁻¹)	V _T (cm³ g⁻¹)	Avg. pore diameter (nm)
Inward coaxial nozzle	179.85	0.20	4.48
Normal coaxial nozzle	181.57	0.15	3.25
Outward coaxial nozzle	278.56	0.26	3.74
Single nozzle	164.72	0.26	6.68