In Situ Construction of a 2D CoTiO3/g-C3N4 Photocatalyst with an S-scheme Heterojunction and Its Excellent Performance for CO2 Reduction

The CoTiO 3 /g-C 3 N 4 heterojunction showed a stronger redox potential than g-C 3 N 4 . Furthermore, the use of triethanolamine as a h + /–OH and e − sacrificial agent significantly enabled the efficient utilization of photogenerated electron–hole pairs.