Adsorption Study of Lead Ions on Nickel-Metal Organic Framework

Nickel(II) based metal-organic framework (MOF) was synthesized using terephthalic acid, C6H4(COOH)2 as an organic linker. This MOF was characterized and used as an adsorbent for the removal of lead ions in aqueous medium. Characterization was conducted by X-ray diffraction, Fourier transform infrared spectroscopy, thermal gravimetric analysis and scanning electron microscopy techniques. The removal of Pb2+ ions from aqueous medium varied with contact time, concentration, pH and temperature.

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Synthesis of a Novel Porphyrin-Based Metal–Organic Framework (Co-Por MOF)

Proceedings ◽

10.3390/ecsoc-23-06483 ◽

2019 ◽

Vol 41 (1) ◽

pp. 83

Author(s):

Leyla Tayebi ◽

Rahmatollah Rahimi ◽

Mahboubeh Rabbani

Keyword(s):

Solvothermal Method ◽

Metal Organic Framework ◽

Reflectance Spectroscopy ◽

X Ray Diffraction ◽

X Ray ◽

Covalent Interaction ◽

Metal Organic ◽

One Step ◽

Organic Linker ◽

Organic Framework

In this study, a novel porphyrin-based metal–organic framework (Co-Por MOF) was successfully synthesized by a simple one-step solvothermal method. We report a metal–organic framework based on the covalent interaction of an organic linker, 5,10,15,20-tetrakis(4-carboxyphenyl) porphyrin (TCPP) with cobalt clusters. The properties of this material were analyzed by powder X-ray diffraction (XRD), ultraviolet visible adsorption spectroscopy (UV–Vis), Fourier-transform infrared spectroscopy (FTIR), and differential reflectance spectroscopy (DRS).

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Adsorption of Ammonia on Zirconium-Based Metal-Organic Framework: A Combined Experimental and Theoretical Study

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.757.93 ◽

2017 ◽

Vol 757 ◽

pp. 93-97

Author(s):

Saowalak Phikulthai ◽

Yuwanda Injongkol ◽

Thana Maihom ◽

Piti Treesukol ◽

Phornphimon Maitarad ◽

...

Keyword(s):

Theoretical Study ◽

Metal Organic Framework ◽

Acid Group ◽

X Ray Diffraction ◽

X Ray ◽

Metal Organic ◽

Acid Catalyzed ◽

Catalyzed Reactions ◽

Organic Linker ◽

Organic Framework

Zirconium-based Metal-organic framework ((Zr6O4(OH)4(1,4-benzenedicarboxylate)6), UiO-66) is one of the most outstanding MOFs for heterogeneous catalysis owning to its high thermal and chemical stabilities. 1,4-benzenedicarboxylate, which is an organic linker of UiO-66, can be functionalized by a sulfonic acid group (UiO-66-SO3H) for several acid-catalyzed reactions. In this work, the structures and acidity of the synthesized UiO-66 and UiO-66-SO3H were characterized using X-ray diffraction, IR-spectroscopy and adsorption experiments. The adsorption of ammonia on UiO-66 type frameworks was studied on the C162H122O67SZr12 cluster model by different DFT functionals including B3LYP, CAM-B3LYP, M06-L, PBE, TPSS and ωB97X-D. The adsorption energies were calculated to be -16.4, -19.2, -18.0, -19.7, -17.4 and -19.3 kcal/mol, respectively, which agreed well with the value from MP2 calculation (-17.9 kcal/mol). This study provides a guideline on the suitable calculation models and yield more insights on the adsorption in acid-functionalized UiO-66 MOF framework.

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Characterization of a Holmium 4,4′-Biphenyldicarboxylate Metal-Organic Framework and Its Potential as a Holmium Carrier System

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17476 ◽

2020 ◽

Vol 20 (5) ◽

pp. 3019-3024 ◽

Cited By ~ 1

Author(s):

Juan P. Vizuet ◽

Abigail L. Lewis ◽

Gregory T. McCandless ◽

Kenneth J. Balkus

Keyword(s):

Metal Organic Framework ◽

X Ray Diffraction ◽

X Ray ◽

Metal Organic ◽

Solvent Molecules ◽

The Stability ◽

Adsorption Desorption ◽

Organic Linker ◽

Organic Framework

There is growing interest in Holmium carriers for radiotherapeutic applications. In this work, a holmium-based metal-organic framework (MOF) using the 4,4′-biphenyldicarboxylic acid (H2BPDC) linker was synthesized and characterized to explore its potential as a radiotherapeutic carrier. The 3D MOF [Ho(BPDC)2]·(CH3)2NH2 was characterized by single crystal X-ray diffraction, FTIR, TGA and PXRD. A challenge to overcome in lanthanide-based MOFs is the deformation or collapse of the framework that can occur after evacuation of the pores. This structure displays high thermal stability and no collapse was observed when the molecules confined in the pores were removed. The coordination around the holmium center (CN = 8) is the key to this stability since only the organic linker and no solvent molecules coordinate to the metallic center. The porosity of the material was confirmed by high-pressure carbon dioxide (CO2) adsorption–desorption analysis. The stability of the MOF, its holmium content (28 wt%) and its porosity are features that make this material a potential holmium carrier for radiotherapeutic applications.

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Synthesis and Structure of a Clathrated Two-Dimensional Metal-Organic Framework: [Cd(4,4'-bpy)2(H2O)2](ClO4)2·(L)2·H2O (L = Bis(1-pyrazinylethylidene)hydrazine)

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc20080024 ◽

2008 ◽

Vol 73 (1) ◽

pp. 24-31

Author(s):

Dayu Wu ◽

Genhua Wu ◽

Wei Huang ◽

Zhuqing Wang

Keyword(s):

Metal Organic Framework ◽

Channel Structure ◽

Two Dimensional ◽

X Ray Diffraction ◽

Guest Molecules ◽

X Ray ◽

Square Planar ◽

Metal Organic ◽

Aqueous Meoh ◽

Organic Framework

The compound [Cd(4,4'-bpy)2(H2O)2](ClO4)2·(L)2 was obtained by the reaction of Cd(ClO4)2, bis(1-pyrazinylethylidene)hydrazine (L) and 4,4'-bipyridine in aqueous MeOH. Single-crystal X-ray diffraction has revealed its two-dimensional metal-organic framework. The 2-D layers superpose on each other, giving a channel structure. The square planar grids consist of two pairs of shared edges with Cd(II) ion and a 4,4'-bipyridine molecule each vertex and side, respectively. The square cavity has a dimension of 11.817 × 11.781 Å. Two guest molecules of bis(1-pyrazinylethylidene)hydrazine are clathrated in every hydrophobic host cavity, being further stabilized by π-π stacking and hydrogen bonding. The results suggest that the hydrazine molecules present in the network serve as structure-directing templates in the formation of crystal structures.

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Synthesis of nickel-metal organic framework nanoplates with pyridine modulation and application to supercapacitors

Journal of Energy Storage ◽

10.1016/j.est.2021.102528 ◽

2021 ◽

Vol 38 ◽

pp. 102528

Author(s):

Sufeng Wang ◽

Ji Wang ◽

Min Zeng ◽

Jianhua Yang ◽

Nantao Hu ◽

...

Keyword(s):

Metal Organic Framework ◽

Nickel Metal ◽

Metal Organic ◽

Organic Framework

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Selective Detection of nano-molar range Noxious Anions in Water by a Luminescent Metal-Organic Framework

Materials Advances ◽

10.1039/d0ma00811g ◽

2021 ◽

Author(s):

Sudip Kumar Mondal ◽

Partha Mahata ◽

Pooja Daga ◽

Sourav Sarkar ◽

Prakash Majee ◽

...

Keyword(s):

Aqueous Medium ◽

Metal Organic Framework ◽

Selective Detection ◽

Recognition Ability ◽

Oxo Anions ◽

Metal Organic ◽

Organic Framework

A new metal-organic framework (MOF) showed excellent recognition ability towards five toxic oxo-anions viz. arsenate (HAsO42-), phosphate (PO43-), permanganate (MnO4-), chromate (CrO42-) and dichromate (Cr2O72-) in aqueous medium upon irradiation...

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