Fig. 4: Photocatalytic hydrogen evolution reaction.

Diffuse reflectance UV/Vis spectra (a) and energy band positions (b) of PtSA@S-TFPT, PtNPs@S-TFPT, and S-TFPT. c Time course and cycling stability of photocatalytic H2 productions. d Diffuse reflectance UV/Vis spectrum of PtSA@S-TFPT and wavelength-dependent AQE of photocatalytic H2 production for PtSA@S-TFPT. e H2 evolution rate for state-of-the-art representative COFs. f Adsorption strength of hydrogen atoms on PtNPs@S-TFPT and PtSA@S-TFPT at the active site Pt. Adsorption model of hydrogen atoms on (g) PtNPs@S-TFPT and (h) PtSA@S-TFPT.