Table 1. Elemental Composition and Textural Properties of the Reference Mesoporous Graphitic Carbon Nitride and Single Atom-Based Catalysts.

catalyst	Ca [wt %]	Na [wt %]	Ha [wt %]	C/N [−]	Agb [wt %]	Cub [wt %]	SBETc [m2 g–1]	Vpored [cm3 g–1]
mpg-C3N4	31.90 ± 0.12	48.75 ± 0.39	2.43 ± 0.04	0.65			157	0.46
Ag1@mpg-C3N4	30.08 ± 0.46	47.31 ± 0.08	2.61 ± 0.02	0.64	0.32 ± 0.02		127	0.25
Ag2@mpg-C3N4	31.37 ± 0.01	47.37 ± 0.08	2.30 ± 0.02	0.66	0.31 ± 0.02		232	0.60
Cu1@mpg-C3N4	31.58 ± 0.02	49.05 ± 0.04	2.47 ± 0.02	0.64		0.54 ± 0.01	274	0.72
Cu2@mpg-C3N4	32.27 ± 0.18	47.96 ± 0.18	2.33 ± 0.04	0.67		1.66 ± 0.03	257	0.71

^aC, N, and H elemental analysis. The complete analysis is given in Table S1 in the Supporting Information.

^bICP-OES data.

^cBET method applied to the N₂ isotherm collected at 77 K.

^dQuenched solid density functional theory model assuming cylindrical-shaped pores for the reference mpg-C₃N₄ and single-atom catalysts.