A multi-aromatic hydrocarbon unit induced hydrophobic metal–organic framework for efficient C<sub>2</sub>/C<sub>1</sub> hydrocarbon and oil/water separation

Zhang, Minghui; Xin, Xuelian; Xiao, Zhenyu; Wang, Rongming; Zhang, Liangliang; Sun, Daofeng

doi:10.1039/c6ta08368d

Cited by 110 publications

(74 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, C 3 H 8 and C 3 H 6 adsorption experiments were carried out at room temperature (298 K). UPC-33 exhibits an adsorption amount of 93.6 and 94.3 cm 3 g À1 for C 3 H 8 and C 3 H 6 at 298 Ka nd 1bar,w hich are slightly lower than that of UPC-21 (103.0 and 110.1 cm 3 g À1 ), [9] and higher than FJI-C4 (74.7 cm 3 g À1 for C 3 H 8 ). [29] Considering its practical application, we also tested the reproducibility of UPC-33 for C 3 H 8 and C 3 H 6 storage.…”

Section: Gas Adsorption and Separationmentioning

confidence: 87%

“…[4][5][6] MOFs have been recentlyb een studied for light hydrocarbon storage applications. [7,8] For example, UPC-21 shows ah igh C 3 H 6 and C 3 H 8 uptakes of 124.1 and 116.2 cm 3 g À1 at 273 K. [9] In addition, MOFs have also been employeda sn ew solid sorbents for the separation of light hydrocarbons. [5,10,11] Severalstrategies have been adopted, including tailoring pore surfacef unction, tuningp ore size and shape, and utilizing structural flexibility,t oe nhancet he efficiencyo f selectiveg as separation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Amino‐Functionalized Metal‐Organic Framework, Based on a Rare Ba₁₂(COO)₁₈(NO₃)₂ Cluster, for Efficient C₃/C₂/C₁ Separation and Preferential Catalytic Performance

Fan

Wang

Zhang

et al. 2017

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

A barium(II) metal-organic framework (MOF) based on a predesigned amino-functionalized ligand, namely [Ba (L)(DMF)(H O)(NO ) ]⋅DMF⋅EtOH⋅2 H O (UPC-33) [H L=4,4'-((2-amino-5-carboxy-1,3-phenylene)bis(ethyne-2,1-diyl))dibenzoic acid] has been synthesized. UPC-33 is a 3-dimensional 3,18-connected network with fcu topology with a rare twelve-nuclear Ba (COO) (NO ) cluster. UPC-33 shows permanent porosity and a high adsorption heat of CO (49.92 kJ mol ), which can be used as a platform for selective adsorption of CO /CH (8.09). In addition, UPC-33 exhibits high separation selectivity for C light hydrocarbons with respect to CH (228.34, 151.40 for C H /CH , C H /CH at 273k and 1 bar), as shown by single component gas sorption and selectivity calculations. Due to the existence of -NH groups in the channels, UPC-33 can effectively catalyze Knoevenagel condensation reactions with high yield, and substrate size and electron dependency.

show abstract

Section: Gas Adsorption and Separationmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

An Amino‐Functionalized Metal‐Organic Framework, Based on a Rare Ba₁₂(COO)₁₈(NO₃)₂ Cluster, for Efficient C₃/C₂/C₁ Separation and Preferential Catalytic Performance

Fan

Wang

Zhang

et al. 2017

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

show abstract

“…MOFs synthesized from some tritopic, tetratopic, and octatopic carboxylic acid ligands have also shown characteristics of hydrophobicity . Cai et al reported two Cu 2 paddle‐wheel SBU based MOFs, [Cu 3 (mbtc) 2 ] (CuMBTC) and [Cu 3 (ebtc) 2 ] (CuEBTC), which were obtained from methyl‐ and ethyl‐ group‐functionalized H 3 btc ligands, H 3 mbtc and H 3 ebtc, respectively .…”

Section: Preparation Of Hydrophobic Mofsmentioning

confidence: 99%

“…Zhang et al also reported a hydrophobic and water stable copper(II) paddlewheel‐based MOF, [Cu 2 (pptc)] (UPC‐21), obtained by a pentiptycene‐based tetratopic carboxylic acid ligand, H 4 pptc . Due to the high hydrophobicity of the pentiptycene moieties in the ligands, UPC‐21 showed a high water contact angle (145°), and it could float on the surface of water for a long time without the collapse of its crystalline structure.…”

Section: Preparation Of Hydrophobic Mofsmentioning

confidence: 99%

“…The results indicated the presence of an adsorption competition between water and toluene in the adsorbents. Many studies have also shown the great potential of hydrophobic MOFs or their derived materials for bulk oil/water separation and bulk oil adsorption from water for the cleanup of oil spills . The removal of other types of harmful or useful gases or organic substances, such as ethylene, acetic acid, thiophene, peptides, aromatic amino acids, and pharmaceuticals, from air or water by hydrophobic MOFs and their derived materials has also been documented.…”

Section: Potential Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Hydrophobic Metal–Organic Frameworks: Assessment, Construction, and Diverse Applications

et al. 2020

View full text Add to dashboard Cite

Tens of thousands of metal–organic frameworks (MOFs) have been developed in the past two decades, and only ≈100 of them have been demonstrated as porous and hydrophobic. These hydrophobic MOFs feature not only a rich structural variety, highly crystalline frameworks, and uniform micropores, but also a low affinity toward water and superior hydrolytic stability, which make them promising adsorbents for diverse applications, including humid CO2 capture, alcohol/water separation, pollutant removal from air or water, substrate‐selective catalysis, energy storage, anticorrosion, and self‐cleaning. Herein, the recent research advancements in hydrophobic MOFs are presented. The existing techniques for qualitatively or quantitatively assessing the hydrophobicity of MOFs are first introduced. The reported experimental methods for the preparation of hydrophobic MOFs are then categorized. The concept that hydrophobic MOFs normally synthesized from predesigned organic ligands can also be prepared by the postsynthetic modification of the internal pore surface and/or external crystal surface of hydrophilic or less hydrophobic MOFs is highlighted. Finally, an overview of the recent studies on hydrophobic MOFs for various applications is provided and suggests the high versatility of this unique class of materials for practical use as either adsorbents or nanomaterials.

show abstract

Hydrophobic Metal–Organic Frameworks

et al. 2019

View full text Add to dashboard Cite

formed from organic ligands and metal cations. [1][2][3][4][5][6][7][8][9][10] They are typically synthesized under mild conditions via coordinationdirected self-assembly processes and are also known as metal-organic coordination networks and porous coordination polymers. [11][12][13][14] Due to their high surface areas, large porosity, tunable pore sizes, and functionalities, MOFs have prospective applications in fields such as gas storage/separation, sensing or recognition, proton conduction, and magnetism. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] However, the advantageous unique structural features of even some of the best-performing MOFs are readily degraded because of their high moisture sensitivity, which may limit their practical applications. [29][30][31][32] Consequently, there is an ongoing search for highly hydrophobic, porous, sorbent materials to be employed in various large-scale applications in industry such as oil spill cleanup, hydrocarbon storage/separation, or water purification. [33][34][35][36][37] Many academics, industrial scientists, and engineers have therefore conducted research on the fabrication of superhydrophobic surfaces, which involves hydrophobic surface modification and creating surface roughness on the micrometer-or nanoscale. Hydrophobic surfaces are defined as substrates with an apparent contact angle greater than 90° with respect to water. On superhydrophobic materials, water droplets have contact angles above 150° and show very low adhesion because the drops partially rest on an air cushion. The surface energy and roughness govern the wettability of hydrophobic surfaces. In general, lower surface energies and higher roughness are associated with larger contact angles, lower contact angle hysteresis, and robust superhydrophobicity. Because of their ultralow surface energies (10-20 mN m −1 ), alkyl-based or fluorinated compounds are commonly used as hydrophobic modifiers to prepare surfaces with high intrinsic contact angles (>90°). [33][34][35][36][37][38][39][40][41][42] Recently, few methods have been developed for synthesizing hydrophobic MOFs including both pristine and composite systems. This review offers a comprehensive overview of the state of the art in hydrophobic MOF synthesis and the field's challenges and opportunities. Various synthetic strategies for preparing hydrophobic MOFs and their composites are introduced. We discuss the basics of wetting and critical challenges in the characterization of these hydrophobic materials. The potential applications of hydrophobic MOFs and related Metal-organic frameworks (MOFs) have diverse potential applications in catalysis, gas storage, separation, and drug delivery because of their nanoscale periodicity, permanent porosity, channel functionalization, and structural diversity. Despite these promising properties, the inherent structural features of even some of the best-performing MOFs make them moisture-sensitive and unstable in aqueous media, limiting their practical usefulness. This problem could be ...

show abstract

A multi-aromatic hydrocarbon unit induced hydrophobic metal–organic framework for efficient C₂/C₁ hydrocarbon and oil/water separation

Cited by 110 publications

References 61 publications

An Amino‐Functionalized Metal‐Organic Framework, Based on a Rare Ba₁₂(COO)₁₈(NO₃)₂ Cluster, for Efficient C₃/C₂/C₁ Separation and Preferential Catalytic Performance

An Amino‐Functionalized Metal‐Organic Framework, Based on a Rare Ba₁₂(COO)₁₈(NO₃)₂ Cluster, for Efficient C₃/C₂/C₁ Separation and Preferential Catalytic Performance

Hydrophobic Metal–Organic Frameworks: Assessment, Construction, and Diverse Applications

Hydrophobic Metal–Organic Frameworks

Contact Info

Product

Resources

About

A multi-aromatic hydrocarbon unit induced hydrophobic metal–organic framework for efficient C2/C1 hydrocarbon and oil/water separation

Cited by 110 publications

References 61 publications

An Amino‐Functionalized Metal‐Organic Framework, Based on a Rare Ba12(COO)18(NO3)2 Cluster, for Efficient C3/C2/C1 Separation and Preferential Catalytic Performance

An Amino‐Functionalized Metal‐Organic Framework, Based on a Rare Ba12(COO)18(NO3)2 Cluster, for Efficient C3/C2/C1 Separation and Preferential Catalytic Performance

Hydrophobic Metal–Organic Frameworks: Assessment, Construction, and Diverse Applications

Hydrophobic Metal–Organic Frameworks

Contact Info

Product

Resources

About

A multi-aromatic hydrocarbon unit induced hydrophobic metal–organic framework for efficient C₂/C₁ hydrocarbon and oil/water separation

An Amino‐Functionalized Metal‐Organic Framework, Based on a Rare Ba₁₂(COO)₁₈(NO₃)₂ Cluster, for Efficient C₃/C₂/C₁ Separation and Preferential Catalytic Performance

An Amino‐Functionalized Metal‐Organic Framework, Based on a Rare Ba₁₂(COO)₁₈(NO₃)₂ Cluster, for Efficient C₃/C₂/C₁ Separation and Preferential Catalytic Performance