Photocatalytic production of H2O2 over facet-dependent Ti-MOF

In the past several years, two-phase photocatalysts, such as PDI/C3N4, ZIF/C3N4 or Cu-2(OH)PO4/C3N4, have been used for H2O2 photo-production. Few monocomponent photocatalysts for H2O2 production were reported. Among the monocomponent photocatalysts, Ti-MOF photocatalysts for H2O2 photo-production have attracted much attention, although it is a challenge for Ti-MOFs to achieve good electron-hole separation. Herein, monocomponent structure NH2-MIL-125 with coexisting (111) and (001) facets was prepared as a photocatalyst for H2O2 production. A two-channel route in the photocatalyst is formed in the frustum structure NH2-MIL-125. One channel is O-2 reduction by conduction band electrons on (111) facets, and the other is the valence band holes on (001) facets. This work will benefit the design of monocomponent Ti-MOF photocatalysts.

Automated summary

The research focuses on using monocomponent NH2-MIL-125 photocatalysts for H2O2 production. By controlling the electron-hole separation pathways on different crystal facets, the photocatalyst plays a role in the photocatalytic redox reactions.