Microporous framework membranes for precise molecule/ion separations

2021 ◽  
Author(s):  
Haozhen Dou ◽  
Mi Xu ◽  
Baoyu Wang ◽  
Zhen Zhang ◽  
Guobin Wen ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Great Promise ◽  
Energy And Environment ◽  
Micropore Structure ◽  
Covalent Organic Framework ◽  
Metal Organic ◽  
Organic Framework

Microporous framework membranes with well-defined micropore structure such as metal-organic framework membranes and covalent organic framework membranes hold great promise for the enormous challenging separations in energy and environment fields.

Metal–organic framework based nanozymes: promising materials for biochemical analysis

2020 ◽  
Vol 56 (77) ◽  
pp. 11338-11353 ◽  
Author(s):  
Xiangheng Niu ◽  
Xin Li ◽  
Zhaoyuan Lyu ◽  
Jianming Pan ◽  
Shichao Ding ◽  
...  
Keyword(s):  
Biochemical Analysis ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Great Promise ◽  
Metal Organic ◽  
Organic Framework

Metal–organic frameworks with enzyme-like catalytic features (MOF nanozymes) exhibit great promise in detecting various analytes with amplified signal outputs.

scholarly journals Paralyzed membrane: Current-driven synthesis of a metal-organic framework with sharpened propene/propane separation

2018 ◽  
Vol 4 (10) ◽  
pp. eaau1393 ◽  
Author(s):  
Sheng Zhou ◽  
Yanying Wei ◽  
Libo Li ◽  
Yifan Duan ◽  
Qianqian Hou ◽  
...  
Keyword(s):  
Large Scale ◽  
Metal Organic Framework ◽  
Great Promise ◽  
Cubic Phase ◽  
Membrane Composition ◽  
Zeolitic Imidazolate Framework ◽  
Metal Organic ◽  
Dynamics Simulations ◽  
Molecular Sieving ◽  
Organic Framework

Metal-organic framework (MOF) membranes show great promise for propene/propane separation, yet a sharp molecular sieving has not been achieved due to their inherent linker mobility. Here, zeolitic imidazolate framework ZIF-8–type membranes with suppressed linker mobility are prepared by a fast current–driven synthesis (FCDS) strategy within 20 min, showing sharpened molecular sieving for propene/propane separation with a separation factor above 300. During membrane synthesis, the direct current promotes the metal ions and ligands to assemble into inborn-distorted and stiffer frameworks with ZIF-8_Cm (a newly discovered polymorph of ZIF-8) accounting for 60 to 70% of the membrane composition. Molecular dynamics simulations further verify that ZIF-8_Cm is superior to ZIF-8_I 4¯3m (the common cubic phase) for propene/propane separation. FCDS holds great potential to produce high-quality, ultrathin MOF membranes on a large scale.

Surface-supported metal–organic framework thin films: fabrication methods, applications, and challenges

2017 ◽  
Vol 46 (19) ◽  
pp. 5730-5770 ◽  
Author(s):  
Jinxuan Liu ◽  
Christof Wöll
Keyword(s):  
Thin Films ◽  
Energy Storage ◽  
Water Splitting ◽  
Metal Organic Framework ◽  
Electronic Devices ◽  
Great Promise ◽  
Metal Organic ◽  
Organic Framework ◽  
Supported Metal

Surface-supported metal–organic framework thin films are receiving increasing attention as a novel form of nanotechnology, which hold great promise for photovoltaics, electronic devices, CO2 reduction, energy storage, water splitting and membranes.

scholarly journals High Performance of UiO-66 Metal-Organic Framework Modified with Melamine for Uptaking of Lead and Cadmium from Aqueous Solutions

2021 ◽  
Author(s):  
alaaS Abdelmoaty ◽  
Shaimaa El-Wakeel ◽  
Nady Fathy ◽  
AdlyA Hanna
Keyword(s):  
Metal Ion ◽  
Active Sites ◽  
High Performance ◽  
Metal Organic Framework ◽  
Ion Concentration ◽  
Great Promise ◽  
Order Kinetic ◽  
Lead And Cadmium ◽  
Metal Organic ◽  
Organic Framework

Abstract In this paper, UiO-66 metal-organic framework (MOF) was prepared by a hydrothermal method and modified consequently with melamine (MUiO-66), as so as enhance the adsorption properties of these materials in liquid-phase adsorption. With respect to this, the adsorption of lead and cadmium divalent ions was performed under varying conditions of pH, metal ion concentration, contact time, adsorbent dose and temperature. Morphology, texture properties, functional groups, crystallinity and thermal properties of both MOFs were examined. UiO-66 composed of sphere-like particles and covered by layers of melamine with enhancing in crystallinity and active sites as well as the total surface area increased from 1080 to 1160 m2/g. The modified UiO-66 with melamine (MUiO-66) showed a notable adsorption capacity of 177.5 and 146.6 mg/g for Pb and Cd (II) ions, respectively. Adsorption of both metals fitted well with the pseudo-second-order kinetic and Langmuir models and controlled by a physisorption mechanism at pH of 5. Also, adsorption process is an endothermic in nature and desorption is achieved well for three cycles by MUiO-66. Therefore, UiO-66 and MUiO-66 obtained in this work have a great promise in adsorption of heavy metals such as Pb and Cd(II) ions from wastewater.

scholarly journals Fabrication of a Porous Metal-Organic Framework with Polar Channels for 5-Fu Delivery and Inhibiting Human Osteosarcoma Cells

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Li-Chun Zhao ◽  
Mei Tang ◽  
Qian-Hua Zhang ◽  
Zhi-Yi Hu ◽  
Hong-Wei Gao ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Drug Loading ◽  
Window Size ◽  
Great Promise ◽  
Osteosarcoma Cell ◽  
Impregnation Method ◽  
Human Osteosarcoma ◽  
Human Osteosarcoma Cells ◽  
Metal Organic ◽  
Organic Framework

As an emerging kind of crystalline material, the metal-organic framework (MOF) has shown great promise in the biomedical domains such as drug storage and delivery. In this study, a new porous MOF, [[Dy2(H2O)3(SDBA)3](DMA)6] (1, H2SDBA = 4,4′-sulfonyldibenzoic acid, DMA = N,N-dimethylacetamide (C4H9NO)), with uncoordinated O donor sites has been fabricated using a bent polycarboxylic acid organic linker under the solvothermal condition. The structure of the obtained crystalline product has been fully determined by the X-ray single-crystal diffraction, TGA, elemental analysis, XRD, and the gas sorption measurement. Due to the suitable window size and polar atom functionalized 1D channels, the activated 1 (1a) compound was used for the anticancer drug 5-fluorouracil (5-Fu, C4H3FN2O2) loading by a simple impregnation method. A moderate drug loading and pH-dependent drug-release behavior could be observed for 1a. Furthermore, as indicated by the MTT assay, this drug/MOF composite shows low toxicity toward the human normal cells and demonstrates obvious anticancer activity against the human osteosarcoma cell line MG63.

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