Solvent-dependent textural properties of defective UiO-66 after acidic and basic treatment

2021 ◽  
Author(s):  
Daniele Cartagenova ◽  
Fabio André Peixoto Esteves ◽  
Nathan Teilo Fischer ◽  
Jeroen van Bokhoven ◽  
Marco Ranocchiari
Keyword(s):  
Organic Solvents ◽  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Metal Organic ◽  
Basic Treatment

UiO-66 is one of the most chemically stable metal-organic frameworks (MOFs) available. However, little is known about its stability in organic solvents. In this study, we synthesized a highly defective...

scholarly journals Solvent-Dependent Stability of Highly Defective UiO-66 to Acids and Bases

2021 ◽  
Author(s):  
Daniele Cartagenova ◽  
Fabio A. Peixoto Esteves ◽  
Nathan T. Fischer ◽  
Jeroen A. van Bokhoven ◽  
Marco Ranocchiari
Keyword(s):  
Organic Solvents ◽  
Crystalline Structure ◽  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Systematic Investigation ◽  
Acid Base ◽  
Metal Organic ◽  
Acids And Bases ◽  
The Stability ◽  
Strong Acids

UiO-66 is one of the most chemically stable Metal-organic frameworks (MOFs) available. However, little is known about its stability in organic solvents. In this study, we synthesized a highly defective UiO-66 (HD-UiO-66) and explored how its textural properties change when exposed to weak and strong acids, both organic and inorganic in nature, and dissolved in different solvents, water, dichloromethane (DCM), and tetrahydrofuran (THF). Exposing defective UiO-66 to weak acids and bases, such as acetic acid and triethylamine, maintains its crystalline structure and porosity, irrespective of the solvent. Sulphuric acid decomposes HD-UiO-66 in organic solvents but not in water, trifluoroacetic acid decomposes the framework only in DCM. Tetramethylguanidine decomposes HD-UiO-66 in organic solvents but mantains some of the MOFs porosity and crystalline structure in water, whereas potassium carbonate damages the MOF to a greater extent in water than in organic solvents. Our results show that the acid/base properties of the solvent modulate the strength of acids and bases and its polarity determines the extent of their solvation, thus playing a crucial role in altering the MOF’s textural properties. This systematic investigation highlights the central role played by the solvent in tuning the stability of MOFs, which is relevant for liquid-phase applications in acidic and basic environments, such as catalysis and adsorption.

scholarly journals Solvent-Dependent Stability of Highly Defective UiO-66 to Acids and Bases

2021 ◽  
Author(s):  
Daniele Cartagenova ◽  
Fabio A. Peixoto Esteves ◽  
Nathan T. Fischer ◽  
Jeroen A. van Bokhoven ◽  
Marco Ranocchiari
Keyword(s):  
Organic Solvents ◽  
Crystalline Structure ◽  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Systematic Investigation ◽  
Acid Base ◽  
Metal Organic ◽  
Acids And Bases ◽  
The Stability ◽  
Strong Acids

UiO-66 is one of the most chemically stable Metal-organic frameworks (MOFs) available. However, little is known about its stability in organic solvents. In this study, we synthesized a highly defective UiO-66 (HD-UiO-66) and explored how its textural properties change when exposed to weak and strong acids, both organic and inorganic in nature, and dissolved in different solvents, water, dichloromethane (DCM), and tetrahydrofuran (THF). Exposing defective UiO-66 to weak acids and bases, such as acetic acid and triethylamine, maintains its crystalline structure and porosity, irrespective of the solvent. Sulphuric acid decomposes HD-UiO-66 in organic solvents but not in water, trifluoroacetic acid decomposes the framework only in DCM. Tetramethylguanidine decomposes HD-UiO-66 in organic solvents but mantains some of the MOFs porosity and crystalline structure in water, whereas potassium carbonate damages the MOF to a greater extent in water than in organic solvents. Our results show that the acid/base properties of the solvent modulate the strength of acids and bases and its polarity determines the extent of their solvation, thus playing a crucial role in altering the MOF’s textural properties. This systematic investigation highlights the central role played by the solvent in tuning the stability of MOFs, which is relevant for liquid-phase applications in acidic and basic environments, such as catalysis and adsorption.

scholarly journals Solvent-Dependent Stability of Highly Defective UiO-66 to Acids and Bases

2021 ◽  
Author(s):  
Daniele Cartagenova ◽  
Fabio A. Peixoto Esteves ◽  
Nathan T. Fischer ◽  
Jeroen A. van Bokhoven ◽  
Marco Ranocchiari
Keyword(s):  
Organic Solvents ◽  
Crystalline Structure ◽  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Systematic Investigation ◽  
Acid Base ◽  
Metal Organic ◽  
Acids And Bases ◽  
The Stability ◽  
Strong Acids

UiO-66 is one of the most chemically stable Metal-organic frameworks (MOFs) available. However, little is known about its stability in organic solvents. In this study, we synthesized a highly defective UiO-66 (HD-UiO-66) and explored how its textural properties change when exposed to weak and strong acids, both organic and inorganic in nature, and dissolved in different solvents, water, dichloromethane (DCM), and tetrahydrofuran (THF). Exposing defective UiO-66 to weak acids and bases, such as acetic acid and triethylamine, maintains its crystalline structure and porosity, irrespective of the solvent. Sulphuric acid decomposes HD-UiO-66 in organic solvents but not in water, trifluoroacetic acid decomposes the framework only in DCM. Tetramethylguanidine decomposes HD-UiO-66 in organic solvents but mantains some of the MOFs porosity and crystalline structure in water, whereas potassium carbonate damages the MOF to a greater extent in water than in organic solvents. Our results show that the acid/base properties of the solvent modulate the strength of acids and bases and its polarity determines the extent of their solvation, thus playing a crucial role in altering the MOF’s textural properties. This systematic investigation highlights the central role played by the solvent in tuning the stability of MOFs, which is relevant for liquid-phase applications in acidic and basic environments, such as catalysis and adsorption.

A non-template approach to fabricate mesoporous alumina with predefined morphology by solid-state transformation of Al-based metal–organic frameworks

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15182-15186 ◽  
Author(s):  
Dandan Liu ◽  
Fangna Dai ◽  
Xuehui Li ◽  
Jilei Liang ◽  
Yunqi Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Treatment ◽  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Treatment Method ◽  
Mesoporous Alumina ◽  
State Transformation ◽  
Solid State Transformation ◽  
Special Morphology ◽  
Metal Organic

Using different Al-MOFs as precursor, mesoporous γ-Al2O3 with special morphology and different textural properties were synthesized by thermal treatment method.

A dual-emission probe to detect moisture and water in organic solvents based on green-Tb3+ post-coordinated metal–organic frameworks with red carbon dots

2017 ◽  
Vol 46 (21) ◽  
pp. 7098-7105 ◽  
Author(s):  
Jing-Xing Wu ◽  
Bing Yan
Keyword(s):  
Organic Solvents ◽  
Carbon Dots ◽  
Metal Organic Frameworks ◽  
Dual Emission ◽  
Luminescent Sensor ◽  
Agglomeration Effect ◽  
Metal Organic

A new dual-emission Tb3+@p-CDs/MOF (red carbon dots, green Tb3+) serves as a luminescent sensor for water and humidity, due to the agglomeration effect of p-CDs in different solvents.

scholarly journals A transformative route to nanoporous manganese oxides of controlled oxidation states with identical textural properties

2014 ◽  
Vol 2 (27) ◽  
pp. 10435-10443 ◽  
Author(s):  
Jae Hwa Lee ◽  
Young Jin Sa ◽  
Tae Kyung Kim ◽  
Hoi Ri Moon ◽  
Sang Hoon Joo
Keyword(s):  
Manganese Oxides ◽  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Thermal Conversion ◽  
Oxidation States ◽  
Metal Organic

Controlled thermal conversion of Mn-based metal–organic frameworks yielded a series of nanoporous manganese oxides with continuously tuned oxidation states.

Comparison of the benzene sorption properties of metal organic frameworks: influence of the textural properties

2019 ◽  
Vol 21 (3) ◽  
pp. 407-412 ◽  
Author(s):  
Hichem Belarbi ◽  
Philippe Gonzales ◽  
Altaf Basta ◽  
Philippe Trens
Keyword(s):  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Sorption Properties ◽  
Metal Organic

CuBTC exhibits stronger interaction with benzene as compared to MIL-101. It should be preferred for benzene remediation.

scholarly journals Photochemistry Meets Porous Organic Cages

2021 ◽  
Vol 75 (4) ◽  
pp. 285-290
Author(s):  
Hsin-Hua Huang ◽  
Tomáš Šolomek
Keyword(s):  
Organic Solvents ◽  
Photophysical Properties ◽  
Metal Organic Frameworks ◽  
Polymeric Materials ◽  
Nanoporous Materials ◽  
The Past ◽  
Metal Organic ◽  
The Rich ◽  
As Solubility ◽  
Molecular Nature

Chemistry of porous organic cages has developed in the past decade as an alternative to the wellknown nanoporous materials based on extended networks, such as metal organic frameworks (MOFs) or covalent organic frameworks (COFs). Unlike these extended polymeric materials, the molecular nature of organic cages offers important advantages, such as solubility of the material in common organic solvents. However, a simultaneous combination of porosity and additional optoelectronic properties, common in MOFs and COFs, is still quite rare. Therefore, porous organic cages are relatively underdeveloped when compared to MOFs and COFs. Here, we highlight the rich possibilities the porous organic cages offer and discuss the recent development where interesting photophysical properties augment the porosity, including our own work.

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