A UiO-66 analogue with uncoordinated carboxylic acids for the broad-spectrum removal of toxic chemicals

2015 ◽  
Vol 39 (4) ◽  
pp. 2396-2399 ◽  
Author(s):  
Jared B. DeCoste ◽  
Tyler J. Demasky ◽  
Michael J. Katz ◽  
Omar K. Farha ◽  
Joseph T. Hupp
Keyword(s):  
Carboxylic Acids ◽  
Broad Spectrum ◽  
Metal Organic Framework ◽  
Toxic Chemicals ◽  
Ambient Conditions ◽  
Toxic Gases ◽  
Metal Organic ◽  
Organic Framework

A new metal–organic framework analogue is stable under ambient conditions with the ability to remove toxic gases.

scholarly journals Arene guest selectivity and pore flexibility in a metal–organic framework with semi-fluorinated channel walls

2017 ◽  
Vol 375 (2084) ◽  
pp. 20160031 ◽  
Author(s):  
Rebecca Smith ◽  
Iñigo J. Vitórica-Yrezábal ◽  
Adrian Hill ◽  
Lee Brammer
Keyword(s):  
Nmr Spectroscopy ◽  
Metal Organic Framework ◽  
Magic Angle Spinning ◽  
Nitrogen Atmosphere ◽  
Magic Angle ◽  
Ambient Conditions ◽  
Solid State Transformation ◽  
X Ray ◽  
Metal Organic ◽  
Organic Framework

A metal–organic framework (MOF) with one-dimensional channels of approximately hexagonal cross-section [Ag 2 (O 2 CCF 2 CF 2 CO 2 )(TMP)] 1 (TMP =2,3,5,6-tetramethylpyrazine) has been synthesized with MeOH filling the channels in its as-synthesized form as [Ag 2 (O 2 CCF 2 CF 2 CO 2 )(TMP)]· n (MeOH) 1-MeOH ( n  = 1.625 by X-ray crystallography). The two types of ligand connect columns of Ag(I) centres in an alternating manner, both around the channels and along their length, leading to an alternating arrangement of hydrocarbon (C–H) and fluorocarbon (C–F) groups lining the channel walls, with the former groups projecting further into the channel than the latter. MeOH solvent in the channels can be exchanged for a variety of arene guests, ranging from xylenes to tetrafluorobenzene, as confirmed by gas chromatography, 1 H nuclear magnetic resonance (NMR) spectroscopy, thermogravimetric analysis and 13 C cross-polarization magic angle spinning NMR spectroscopy. Alkane and perfluoroalkane guests, however, do not enter the channels. Although exhibiting some stability under a nitrogen atmosphere, sufficient to enable crystal structure determination, the evacuated MOF 1 is unstable for periods of more than minutes under ambient conditions or upon heating, whereupon it undergoes an irreversible solid-state transformation to a non-porous polymorph 2 , which comprises Ag 2 (O 2 CCF 2 CF 2 CO 2 ) coordination layers that are pillared by TMP ligands. This transformation has been followed in situ by powder X-ray diffraction and shown to proceed via a crystalline intermediate. This article is part of the themed issue ‘Coordination polymers and metal–organic frameworks: materials by design’.

NO2 Removal under Ambient Conditions by Nanoporous Multivariate Zirconium-Based Metal–Organic Framework

2020 ◽  
Vol 3 (11) ◽  
pp. 11442-11454
Author(s):  
Xinbo Wang ◽  
Zhenzhu Xu ◽  
Li Li ◽  
Yue Zhao ◽  
Ruyue Su ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Ambient Conditions ◽  
Metal Organic ◽  
Organic Framework

Metal‐Organic‐Framework‐Derived Cobalt‐Doped Carbon Material for Electrochemical Ammonia Synthesis under Ambient Conditions

2020 ◽  
Vol 7 (24) ◽  
pp. 4900-4905
Author(s):  
Anmin Liu ◽  
Xingyou Liang ◽  
Qiyue Yang ◽  
Xuefeng Ren ◽  
Mengfan Gao ◽  
...  
Keyword(s):  
Carbon Material ◽  
Ammonia Synthesis ◽  
Metal Organic Framework ◽  
Ambient Conditions ◽  
Metal Organic ◽  
Organic Framework

Metal–organic framework-derived shuttle-like V2O3/C for electrocatalytic N2 reduction under ambient conditions

2019 ◽  
Vol 6 (2) ◽  
pp. 391-395 ◽  
Author(s):  
Rong Zhang ◽  
Jingrui Han ◽  
Baozhan Zheng ◽  
Xifeng Shi ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Ambient Conditions ◽  
Metal Organic ◽  
Excellent Selectivity ◽  
Organic Framework

Metal–organic framework-derived shuttle-like V2O3/C is efficient for ambient electrocatalytic N2-to-NH3 fixation with excellent selectivity in 0.1 M Na2SO4.

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