Element atomic ratios of the g-C₃N₄ samples^a.

Sample	OEA			XPS
	N/C	O/C	H/C	N/C	O/C	P/C
B-CN	1.467	0.007	0.023	1.318	0.038	0
G-CN	1.421	0.018	0.027	1.283	0.064	0
0.2-P1-CN	1.389	0.047	0.029	1.287	0.079	0.018
0.8-P1-CN	1.381	0.064	0.031	1.266	0.105	0.038
3.2-P1-CN	1.365	0.073	0.032	1.249	0.112	0.043
0.2-P2-CN	1.293	0.091	0.030	1.204	0.127	0.010
0.8-P2-CN	1.117	0.135	0.035	1.037	0.223	0.017
3.2-P2-CN	1.002	0.162	0.037	0.904	0.279	0.024

^aOEA and XPS represent the results obtained from organic elemental analysis and X-ray photoelectron spectroscopy, respectively.