Table 1. Cu, C, N, and O Contents Estimated from the FESEM–EDS Data for the Different g-C₃N₄/Cu₂O Composites.

S. No.	Sample code	Cu (wt %)	C (wt %)	O (wt %)	N (wt %)
1	CN/Cu-1	68.2	16.5	10.7	4.6
2	CN/Cu-2	63.0	24.8	11.8	0.4
3	CN/Cu-3	56.8	25.7	13.5	4.0
4	CN/Cu-4	49.5	24.3	8.1	18.1
5	CN/Cu-5	46.4	33.8	14.2	5.6
6	CN/Cu-6	41.0	43.0	9.3	6.7