Asymmetric TiS 1 O 1 N 2 site for interfacial polarization with improved NO 3 − -to-NH 3 photoreduction

TiOPc is modified on CdIn 2 S 4 to build axial asymmetric TiS 1 O 1 N 2 polarization site. This electron-enriched site favors rapid charge transport between two materials via the interfacial Ti−S bond, boosting the NO 3 − −to−NH 3 photosynthesis activity.