scholarly journals A Facile One-Pot Approach to the Synthesis of Gd-Eu Based Metal-Organic Frameworks and Applications to Sensing of Fe3+ and Cr2O72− Ions

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1679
Author(s):  
Roberta Puglisi ◽  
Anna L. Pellegrino ◽  
Roberto Fiorenza ◽  
Salvatore Scirè ◽  
Graziella Malandrino
Keyword(s):  
Surface Area ◽  
Metal Organic Frameworks ◽  
3D Structure ◽  
Inorganic Ions ◽  
Total Surface Area ◽  
One Pot ◽  
Green Approach ◽  
Metal Organic ◽  
Ft Ir ◽  
Xrd Patterns

Gadolinium metal-organic frameworks (Gd-MOFs) and Eu-doped Gd-MOFs have been synthesized through a one-pot green approach using commercially available reagents. The 1,4-benzenedicarboxylic acid (H2-BDC) and 2,6-naphthalenedicarboxylic acid (H2-NDC) were chosen as ditopic organic linkers to build the 3D structure of the network. The Gd-MOFs were characterized using powder X-ray diffraction (XRD), FT-IR spectroscopy, field emission scanning electron microscopy (FE-SEM) and N2 adsorption–desorption analysis. The Gd-MOF structures were attributed comparing the XRD patterns, supported by the FT-IR spectra, with data reported in the literature for Ln-MOFs of similar lanthanide ionic radius. FE-SEM characterization points to the effect of the duration of the synthesis to a more crystalline and organized structure, with grain dimensions increasing upon increasing reaction time. The total surface area of the MOFs has been determined from the application of the Brunauer–Emmett–Teller method. The study allowed us to correlate the processing conditions and ditopic linker dimension to the network surface area. Both Gd-MOF and Eu-doped Gd-MOF have been tested for sensing of the inorganic ions such as Fe3+ and Cr2O72−.

Property of Nanoporous Metal-Organic Frameworks at Different Synthesis Temperature

2012 ◽  
Vol 427 ◽  
pp. 123-127
Author(s):  
Yuan Hui Ma ◽  
Lei Zhang ◽  
Cheng Chun Tang
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Reaction Temperature ◽  
Metal Organic Frameworks ◽  
Synthesis Temperature ◽  
Structure Stability ◽  
Nanoporous Metal ◽  
Metal Organic ◽  
Ft Ir

The nanoporous metal-organic frameworks were synthesized under solvothermal conditions using organic solvent dimethylformamide. The samples were characterized by XRD, SEM, TGA, FT-IR and specific surface area for their properties difference. When the reaction temperature rises, the particle size becomes larger. All TGA curves are the basically same, the framework structure begins to be destroyed from 500°C up to around 600°C. The metal-organic frameworks accepted at reaction temperature 190°C have larger specific surface area and better structure stability.

scholarly journals Synthesis of tetrazolo[1,5-a]pyrimidine-6-carbonitriles using HMTA-BAIL@MIL-101(Cr) as a superior heterogeneous catalyst

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Hossein Abdollahi-Basir ◽  
Boshra Mirhosseini-Eshkevari ◽  
Farzad Zamani ◽  
Mohammad Ali Ghasemzadeh
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Reaction Time ◽  
Metal Organic Framework ◽  
One Pot ◽  
Short Reaction Time ◽  
Three Component Reaction ◽  
Metal Organic ◽  
Ft Ir ◽  
Novel Catalyst

AbstractA one-pot three component reaction of benzaldehydes, 1H-tetrazole-5-amine, and 3-cyanoacetyl indole in the presence of a new hexamethylenetetramine-based ionic liquid/MIL-101(Cr) metal–organic framework as a recyclable catalyst was explored. This novel catalyst, which was fully characterized by XRD, FE-SEM, EDX, FT-IR, TGA, BET, and TEM exhibited outstanding catalytic activity for the preparation of a range of pharmaceutically important tetrazolo[1,5-a]pyrimidine-6-carbonitriles with good to excellent yields in short reaction time.

Role of a 3D Structure in Energy Transfer in Mixed-Ligand Metal–Organic Frameworks

2021 ◽  
Author(s):  
Shaunak M. Shaikh ◽  
Stefan Ilic ◽  
Bradley J. Gibbons ◽  
Xiaozhou Yang ◽  
Elena Jakubikova ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Metal Organic Frameworks ◽  
3D Structure ◽  
Mixed Ligand ◽  
Metal Organic

Petal-shaped MOF assembled with gold nanocage and urate oxidase used as artificial enzyme nanohybrid for tandem catalysis and dual-channel biosensing

Nanoscale ◽  
2021 ◽  
Author(s):  
Zejun Sun ◽  
Yujiao Sun ◽  
Meng Yang ◽  
Hui Jin ◽  
Rijun Gui
Keyword(s):  
Metal Organic Frameworks ◽  
Urate Oxidase ◽  
Tandem Catalysis ◽  
Artificial Enzyme ◽  
One Pot ◽  
Mild Conditions ◽  
Dual Channel ◽  
Metal Organic

A facile one-pot precipitation was employed to prepare a petal-shaped hybrid in mild conditions. The hybrid is composed of urate oxidase (UOx) encapsulated into zeolite-like metal-organic frameworks (MOF) with doping...

3D hollow cage copper cobalt sulfide derived from metal–organic frameworks for high-performance asymmetric supercapacitors

CrystEngComm ◽  
2021 ◽  
Author(s):  
Jiaqi Wang ◽  
Yiling Quan ◽  
Guoxiang Wang ◽  
Dazhi Wang ◽  
Jie Xiao ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
High Performance ◽  
Solvothermal Method ◽  
Metal Organic Frameworks ◽  
Cobalt Sulfide ◽  
Large Specific Surface Area ◽  
Asymmetric Supercapacitors ◽  
Metal Organic ◽  
One Step

Metal–organic frameworks (MOFs) attracted considerable attention through their large specific surface area and excellent adjustable voids. A one-step solvothermal method is proposed herein to fabricate the 3D hollow cage copper-cobalt...

One-pot synthesis of binary metal organic frameworks (HKUST-1 and UiO-66) for enhanced adsorptive removal of water contaminants

2017 ◽  
Vol 490 ◽  
pp. 685-694 ◽  
Author(s):  
Muhammad Rizwan Azhar ◽  
Hussein Rasool Abid ◽  
Hongqi Sun ◽  
Vijay Periasamy ◽  
Moses O. Tadé ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
One Pot ◽  
Water Contaminants ◽  
Adsorptive Removal ◽  
Binary Metal ◽  
One Pot Synthesis ◽  
Metal Organic

Synthesis and effect of metal–organic frame works on CO2 adsorption capacity at various pressures: A contemplating review

2019 ◽  
Vol 31 (3) ◽  
pp. 367-388 ◽  
Author(s):  
Ayesha Rehman ◽  
Sarah Farrukh ◽  
Arshad Hussain ◽  
Erum Pervaiz
Keyword(s):  
Adsorption Capacity ◽  
Surface Area ◽  
Greenhouse Gas Emission ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Climatic Changes ◽  
Microwave Assisted Synthesis ◽  
Synthesis Methods ◽  
Metal Organic ◽  
Organic Framework

The most important environmental challenge that the world is facing today is the control of the quantity of CO2 in the atmosphere, because it causes global warming. Increase in the global temperature results in greenhouse gas emission, interruption of the volcanic activity, and climatic changes. The alarming rise of the CO2 level impels to take some serious action to control these climatic changes. Various techniques are being utilized to capture CO2. However, chemical absorption and adsorption are supposed to be the most suitable techniques for post-combustion CO2 capture, but the main focus is on adsorption. The aim of this study is to provide a brief overview on the CO2 adsorption by a novel class of adsorbents called the metal–organic framework. The metal–organic framework is a porous material having high surface area with high CO2 adsorption capacity. The metal–organic frameworks possess dynamic structure and have large capacity to adsorb CO2 at either low pressure or high pressure due to its cavity size and surface area. Adsorption of CO2 in the metal–organic framework at various pressures depends upon pore volume and heat of adsorption correspondingly. In this review, different synthesis methods of the metal–organic framework such as slow evaporation, solvo thermal, mechanochemical, electrochemical, sonochemical, and microwave-assisted synthesis are briefly described as the structure of the metal–organic frameworks are mostly dependent upon synthesis techniques. In addition to this, different strategies are discussed to increase the CO2 adsorption capacity in the metal organic-framework. [Formula: see text]

Sign in / Sign up

Export Citation Format

Share Document