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Polyoxometalates coupled covalent organic frameworks as highly active photothermal nanoreactor for CO2 cycloaddition
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Polyoxometalates coupled covalent organic frameworks as highly active photothermal nanoreactor for CO2 cycloaddition
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Journal Article
Polyoxometalates coupled covalent organic frameworks as highly active photothermal nanoreactor for CO2 cycloaddition
2024
Overview
Covalent organic frameworks (COFs)-based nanoreactors have attracted broad interest in many fields due to their void-confinement effects. However, the inherent drawback of conventional nanoreactors is the lack of internal active sites, which limits their widespread utilization. Herein, we report the construction of hierarchical COF (EB-TFP) nanoreactor with pre-synthesized polyoxometalates (POM, [PV
2
W
10
O
40
]
5−
(PV
2
W
10
)) clusters encapsulated inside of COF (POM@COF). PV
2
W
10
@EB-TFP anchors nucleophilic-group (Br
−
ions) and PV
2
W
10
anion cluster within the COF framework via electrostatic interactions, which not only simplifies the reaction system but also enhances catalytic efficiency. The reaction performance of the PV
2
W
10
@EB-TFP nanoreactor can be tuned to achieve excellent catalytic activity in CO
2
cycloaddition reaction (CCR) for ∼ 97.63% conversion and ∼ 100% selectivity under visible light irradiation. A mechanistic study based on density functional theory (DFT) calculations and
in-situ
characterization was also carried out. In summary, we have reported a method for achieving the uniform dispersion of POM single clusters into COF nanoreactor, demonstrating the potential of POM@COF nanoreactor for synergistic photothermal catalytic CO
2
cycloaddition.
Publisher
Tsinghua University Press
