Covalently bonded interfaces with delocalized π electrons in a MOF-in-MOF heterojunction for efficient gas–solid phase CO2 photoreduction

Abstract

The interfaces in heterostructure photocatalysts play an important role in charge migration, but the rational controllable interfacial construction remains a challenge. Herein, a covalently bonded interface with delocalized π bonds was controllably constructed via the encapsulation of UiO-66-NH2 nanoparticles in MUV-10 skeletons. The UiO-66-NH2/MUV-10 heterojunction enabled both efficient capture and conversion of CO2 and H2O. The delocalized π bond in the covalent interface efficiently accelerated interfacial charge migration, suppressed carrier recombination, and reduced the work function for electronic effusion. As a consequence, UiO-66-NH2/MUV-10 exhibited superior CO2 photoreduction activity with H2O under visible light irradiation in the gas–solid phase. The CO evolution rate reached as high as 38.7 μmol g−1 h−1, which surpassed that of most commonly reported gas–solid phase photocatalysts. This work not only provides a feasible strategy for the controllable construction of interfaces but also demonstrates the great potential of interfacial engineering for efficient photocatalysis and other related areas.

Graphical abstract: Covalently bonded interfaces with delocalized π electrons in a MOF-in-MOF heterojunction for efficient gas–solid phase CO2 photoreduction

Supplementary files

Article information

Article type
Paper
Submitted
01 janv. 2025
Accepted
04 mars 2025
First published
06 mars 2025

J. Mater. Chem. A, 2025, Advance Article

Covalently bonded interfaces with delocalized π electrons in a MOF-in-MOF heterojunction for efficient gas–solid phase CO2 photoreduction

R. Li, W. Yuan, M. Cui, B. Li, H. Zhang, Z. Peng and Q. Zhai, J. Mater. Chem. A, 2025, Advance Article , DOI: 10.1039/D5TA00012B

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