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Engineering the direct Z-scheme systems over lattice intergrown of MOF-on-MOF for selective CO2 photoreduction to CO
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  • Jian Li,
  • Xinmiao Yu,
  • Wenjuan Xue,
  • Lei Nie,
  • Hongliang Huang,
  • Chongli Zhong
Jian Li
Tiangong University

Corresponding Author:jianli@tiangong.edu.cn

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Xinmiao Yu
Tiangong University
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Wenjuan Xue
Tiangong University
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Lei Nie
Tiangong University
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Hongliang Huang
Tiangong University
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Chongli Zhong
Tiangong University
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The direct Z-scheme provide a potential strategy for high efficient CO2 photoreduction, whereas the heterointerface contact resistance is significantly limited the interfacial electron transfer kinetic. Herein, we build the directional charge-transfer channels in a direct Z-scheme system over metal−organic frameworks (MOFs), that is the lattice-guided MOF-on-MOF hybrids, to facilitate CO2 photoreduction. The heteroepitaxial lattice growth along the c-axis of MIL-88B(Fe) via the high-activity (001) facet over the stable (111) facet of UiO-66-NH2. Theoretical calculations and experimental results provide the direct evidence that engineering direct Z-scheme of these MOFs hybrids can induce the electrons migration from UiO-66-NH2 to the holes of MIL-88B(Fe) by directional charge-transfer channels owing to their lattice match. This can dramatically boosts photocatalytic CO2-to-CO selectivity up to nearly 100%, with a rate of 2.26 μmol·g-1·h-1. This work demonstrates that the efficiently selective CO2 photoreduction processes can be achieved by engineering Z-scheme via lattice intergrown of MOF hybrids strategy.
16 Jul 2022Submitted to AIChE Journal
16 Jul 2022Submission Checks Completed
16 Jul 2022Assigned to Editor
16 Jul 2022Reviewer(s) Assigned
07 Aug 2022Editorial Decision: Revise Minor
31 Aug 20221st Revision Received
01 Sep 2022Submission Checks Completed
01 Sep 2022Assigned to Editor
01 Sep 2022Reviewer(s) Assigned
06 Sep 2022Editorial Decision: Accept
19 Sep 2022Published in AIChE Journal. 10.1002/aic.17906