Fig. 1: Schematic illustration of the preparation of two-dimensional (2D) copper tetra-(4-carboxyphenyl) porphyrin framework (Cu-TCPP) lamellar membrane with excellent photothermal effect.

The Cu-TCPP nanosheets were obtained by a modified thermal solvent method combined with sonication. Assembled by stacking nanosheets layer by layer to form a 2D Cu-TCPP lamellar membrane. The Cu-TCPP membranes with rich pores, multiple nanochannels, and photothermal conversion effect were obtained.