Ultrafast carrier transfer in poly(heptazine imide) for efficient photocatalytic H2O2 production: The structure-directing role of in-situ incorporated cations

Abstract

In poly(heptazine imide) (PHI), the in-situ incorporated alkali metal ions are demonstrated to guide the arrangement of PHI framework, regulate its electronic structure, modulate charge-carrier transfer, and ultimately govern the photocatalytic performance. Notably, some of the resulting structural and property features are retained even after the removal of these cations.