Preparation of Microporous Carbon from Sargassum horneri by Hydrothermal Carbonization and KOH Activation for CO₂ Capture

Table 2

Elemental analysis of S. horneri, HC, and AHC.

Samples	C (wt.%)	H (wt.%)	N (wt.%)	S (wt.%)	O(wt.%)	H/C (atomic ratio)	O/C (atomic ratio)
S. horneri	41.25	5.70	3.43	0.68	48.94	1.66	0.89
HC	52.77	4.95	4.32	0.27	37.69	1.13	0.54
AHC	71.40	2.65	3.56	0.29	22.10	0.44	0.23

Calculated by the difference.