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CRYSTENGCOMM · 2021 ·Vol. 23 ·期 22 ·3989-3994 · IF 3.545

A self-made portable separation device based on 2-D MOF nanosheets for the efficient separation of dyes in solutions

Anqi Li,Xiaofan Ma,Jie Ma,Qingyi Yuan,Jun Zhang,Xiaopeng Xuan

Herein we reported a simple and economical method for fabricating a portable separation device based on exfoliated 2D-metal–organic framework (2D-MOF) nanosheets. This device is composed of a layered Cu-MOF as a filter and a syringe filter as the holder. Benefiting from the structural characteristic of the 2D-MOF nanosheets, the separation experiment reveals that this strategy can exhibit high efficiency and selectivity for dyes with different sizes. This device can be used disposably for a special purpose due to the low cost, simple manufacturing process in an emergency.

研究领域: 材料科学 · 环境科学

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ADVANCED FUNCTIONAL MATERIALS · 2018 ·Vol. 28 ·期 34 ·1802021 · IF 13.325

Ultrasmall Au Nanoparticles Embedded in 2D Mixed-Ligand Metal–Organic Framework Nanosheets Exhibiting Highly Efficient and Size-Selective Catalysis

Rui Yan,Yang Zhao,Hong Yang,Xiao-Jing Kang,Chao Wang,Li-Li Wen,Zhen-Da Lu

Metal–organic frameworks (MOFs) hold great promise as porous matrixes for the incorporation of Au nanoparticles (NPs) because of their rationally designed framework structures. Unfortunately, the as-synthesized bulk MOFs usually vary in the range of micrometer or sub-micrometer size, rendering extremely longer molecular diffusion distance of chemical species. 2D MOF nanosheets with extended lateral dimensions and nanometer thickness are expected to implement fast kinetics and effectively lower mass-transfer barriers during embedding Au NPs process and sequential catalytic reactions. In this study, a novel 2D nanosheet of mixed-ligand Ni(II) MOF (referred to NMOF-Ni ) is successfully fabricated. With the merits of well-defined micropores and functional oxygen-decorated inner walls, the incorporation of quite monodisperse ultrasmall Au nanoparticles of around 1 nm into NMOF-Ni has been achieved for the first time. The resulting nanocomposites exhibit remarkable catalytic performance and good size selectivity toward aqueous reduction reactions of nitrophenol, taking advantage of ultrasmall Au and 2D nanosheet nature, as well as the intact microporosity of host matrix. The present encouraging findings might shed light on new ways to develop high-performance heterogeneous catalysts by using of 2D MOF nanosheets with functional cavities as hosts for homogeneous distribution of ultrasmall Au NPs.

CAS / MDL: 127-19-5 68-12-2 16903-35-8 25249-54-1 9003-39-8 16940-66-2

研究领域: 材料科学 · 催化化学 · 纳米技术

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A self-made portable separation device based on 2-D MOF nanosheets for the efficient separation of dyes in solutions

Ultrasmall Au Nanoparticles Embedded in 2D Mixed-Ligand Metal–Organic Framework Nanosheets Exhibiting Highly Efficient and Size-Selective Catalysis