Photocatalytic production of H2O2 over facet-dependent Ti-MOF

In the past several years, two-phase photocatalysts, such as PDI/C3N4, ZIF/C3N4 or Cu2(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 ha...

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Bibliographic Details
Published in:Catalysis science & technology 2022-01, Vol.12 (3), p.969-975
Main Authors: Zheng, Yuanzhou, Zhou, Hualan, Zhou, Bosen, Mao, Jingchen, Zhao, Yinghao
Format: Article
Language:eng ; jpn
Subjects:
Carbon nitride
Conduction bands
Hydrogen peroxide
Photocatalysis
Photocatalysts
Valence band
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Summary:In the past several years, two-phase photocatalysts, such as PDI/C3N4, ZIF/C3N4 or Cu2(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 O2 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.
ISSN:2044-4753
2044-4761
DOI:10.1039/d1cy02166d