Sharing N atoms boosting Z-scheme charge transfer in SrTiO2N/CNx heterojunctions for selective photoreduction of CO2 to CH4

, with a 98.9% product selectivity. Both characterization and theoretical calculations indicate that N atoms tightly connect the heterostructures and serve as a channel for electron transport, facilitating the transfer of photogenerated electrons. This research lays a way for creating a sharing atoms' Z-scheme interface, providing the potential for exciting future photocatalytic applications.