Effective enhancement of capacitive performance by the facile exfoliation of bulk metal-organic frameworks into 2D-functionalized nanosheets

Recently, much attention has been paid to two-dimensional MOF nanosheets (MONs) due to their widespread application in many specific areas. In this work, a simple and efficient congenerous-exfoliation strategy was developed to prepare vast and uniform few-layered Ni 2+ @Ce-MOF (Ce-MOF: {[Ce(HPIA)(PI...

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Bibliographic Details
Published in:Nanoscale 2021-08, Vol.13 (31), p.13273-13284
Main Authors: Zheng, Tianxiang, Kang, Xiaomin, Liu, Zhiliang
Format: Article
Language:English
Subjects:
Crystallography
Exfoliation
Metal-organic frameworks
Nanosheets
Thickness
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Summary:Recently, much attention has been paid to two-dimensional MOF nanosheets (MONs) due to their widespread application in many specific areas. In this work, a simple and efficient congenerous-exfoliation strategy was developed to prepare vast and uniform few-layered Ni 2+ @Ce-MOF (Ce-MOF: {[Ce(HPIA)(PIA)(H 2 O) 2 ]·H 2 O} n ) nanosheets with a thickness of ca. 10 nm. In the exfoliation process, the synergistic action of Ni 2+ and methanol solvents under ultrasonication plays a major role in restraining the interactions between the layers. Importantly, supercapacitor applications indicate that the exfoliated Ni 2+ @Ce-MOF nanosheet shows a remarkable improvement in the specific capacitance (921.05%) in comparison with that of the bulk Ce-MOF sample before modification. Remarkable improvement in the specific capacitance (921.05%) by the facile exfoliation method of bulk metal-organic frameworks into 2D functionalized nanosheets.
ISSN:2040-3364
2040-3372
DOI:10.1039/d1nr02164h