Functionalization of Carbon Nanofibres Obtained by Floating Catalyst Method

Table 2

Chemical analysis of original, mechanical milled, and thermally and chemically treated CNFs.

%	Original CNFs	Milled CNFs	CNFs carbonized; 1100°C	CNFs carbonized; 1500°C	CNFs graphitized; 2700°C	CNFs H2O2	CNFs H3PO4	CNFs HCl	CNFs H2SO4	CNFs HNO3
C	88.33 ± 0.87	86.64 ± 0.77	88.64 ± 0.75	89.42 ± 0.66	98.92 ± 0.21	88.50 ± 0.26	90.14 ± 0.44	95.54 ± 0.76	94.13 ± 0.66	93.09 ± 0.32
H	0.43 ± 0.07	0.94 ± 0.09	0.20 ± 0.03	0.11 ± 0.02	0.05 ± 0.01	0.69 ± 0.12	0.63 ± 0.08	0.56 ± 0.10	0.34 ± 0.06	0.67 ± 0.07
N	0.20 ± 0.04	0.18 ± 0.02	0.50 ± 0.08	0.48 ± 0.11	0.04 ± 0.01	0.17 ± 0.03	0.16 ± 0.04	0.19 ± 0.06	1.95 ± 0.10	1.39 ± 0.12
S	0.69 ± 0.12	0.98 ± 0.11	0.47 ± 0.09	0.12 ± 0.03	0.01 ± 0.001	0.22 ± 0.08	0.74 ± 0.12	0.17 ± 0.03	0.59 ± 0.07	0.12 ± 0.01
O	2.11 ± 0.23	3.68 ± 0.19	0.38 ± 0.02	0.21 ± 0.02	0.51 ± 0.11	3.62 ± 0.24	2.58 ± 0.32	1.23 ± 0.09	1.41 ± 0.09	3.86 ± 0.14
Ni	8.00 ± 0.39	8.00 ± 0.35	10.00 ± 0.45	10.00 ± 0.53	0.55 ± 0.09	6.80 ± 0.34	5.70 ± 0.47	2.35 ± 0.32	2.04 ± 0.27	0.60 ± 0.08