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. 2021 Apr 15;9:637501. doi: 10.3389/fchem.2021.637501

TABLE 1.

The possible reactions during the photocatalytic CO₂ reduction process.

	Reactions	ΔG ⁰ (kJ∙mol⁻¹)
1	$H_{2} O (l) \to H_{2} (g) + 1 / 2 O_{2} (g)$	237
2	$C O_{2} (g) \to C O (g) + 1 / 2 O_{2} (g)$	257
3	$C O_{2} (g) + H_{2} O (l) \to H C O O H (l) + 1 / 2 O_{2} (g)$	286
4	$C O_{2} (g) + H_{2} O (l) \to H C H O (l) + O_{2} (g)$	522
5	$C O_{2} (g) + 2 H_{2} O (l) \to C H_{3} O H (l) + 3 / 2 O_{2} (g)$	703
6	$C O_{2} (g) + 2 H_{2} O (l) \to C H_{4} (g) + 2 O_{2} (g)$	818