Fig. 5: Mechanistic insights into photocatalytic H2O2 production. | Nature Communications

Fig. 5: Mechanistic insights into photocatalytic H2O2 production.

From: Regulating the electronic structure of covalent organic frameworks via heterocyclic isomers for highly efficient photocatalytic H2O2 generation

Fig. 5

a Photocatalytic H2O2 generation rates of DT2TA-TAPB and DT3TA-TAPB with different scavengers. Time-dependent in situ EPR spectra of b DT2TA-TAPB and c DT3TA-TAPB. In situ DRIFT spectra of d DT2TA-TAPB and e DT3TA-TAPB at 1152 ~ 1126 cm−1. f Koutecky-Levich plots of DT2TA-TAPB and DT3TA-TAPB obtained by RDE measurements at −0.75 V (vs. Ag/AgCl). g The •O2− yields of DT2TA-TAPB and DT3TA-TAPB detected by the NBT method. h Adsorption energy of O2 on optimum site of DT2TA-TAPB and DT3TA-TAPB. i Calculated Gibbs free energy diagrams for the reduction of O2 to H2O2 on DT2TA-TAPB and DT3TA-TAPB.

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