Zheng Tianxiang, Kang Xiaomin, Liu Zhiliang
Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, PR China.
Nanoscale. 2021 Aug 21;13(31):13273-13284. doi: 10.1039/d1nr02164h. Epub 2021 Jul 13.
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@Ce-MOF (Ce-MOF: {[Ce(HPIA)(PIA)(HO)]·HO}) nanosheets with a thickness of ca. 10 nm. In the exfoliation process, the synergistic action of Ni and methanol solvents under ultrasonication plays a major role in restraining the interactions between the layers. Importantly, supercapacitor applications indicate that the exfoliated Ni@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.
近年来，二维金属有机框架纳米片（MONs）因其在许多特定领域的广泛应用而备受关注。在这项工作中，我们开发了一种简单有效的同系物剥离策略，以制备大量均匀的少层Ni@Ce-MOF（Ce-MOF：{[Ce(HPIA)(PIA)(HO)]·HO}）纳米片，其厚度约为10 nm。在剥离过程中，Ni和甲醇溶剂在超声作用下的协同作用在抑制层间相互作用方面起主要作用。重要的是，超级电容器应用表明，与改性前的块状Ce-MOF样品相比，剥离后的Ni@Ce-MOF纳米片的比电容有显著提高（921.05%）。
