Thermal‐Conductive MOFs@BN Self‐Supporting Foams for Synchronously Boosting CO2 Adsorption/Desorption DOI
Sheng Li, Xin Yu, Li Liu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)

Published: April 3, 2024

Abstract Synchronous boosting adsorption and desorption efficiency is a great challenge for CO 2 capture, especially metal–organic frameworks (MOFs) having high uptakes. Herein, novel “self‐supporting foam” strategy proposed to fabricate thermally conductive MOFs@boron nitride nanosheets (BNNS) composite foam (MOFs@BNNS‐PEI) via polyethyleneimine (PEI) cross‐linkage. The “rebar” BNNS the “aggregate” MOFs are packed against each other form self‐supporting structure, effectively reducing reliance on polymers maintain loading. Furthermore, this approach enables successful fabrication of three different types typical MOFs, including HKUST‐1, MIL‐100(Fe), ZIF‐8. This unique design maintains specific surface area (SSA) generates nitrogen‐rich microporosity contributing adsorption. Additionally, PEI serves as thermal bridge reduce interfacial resistance between accelerating within foam. Benefiting from these advantages, MOFs@BNNS‐PEI exhibits higher capacity (1.35–1.42 times that pure MOFs) significant increase in rate (5.0–5.7 MOFs). Thus, can be viable option efficient capture practical applications.

Language: Английский

Topological Design of Unprecedented Metal‐Organic Frameworks Featuring Multiple Anion Functionalities and Hierarchical Porosity for Benchmark Acetylene Separation DOI
Yuanbin Zhang,

Wanqi Sun,

Binquan Luan

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(37)

Published: July 17, 2023

Separation of acetylene (C2 H2 ) from carbon dioxide (CO2 or ethylene H4 is industrially important but still challenging so far. Herein, we developed two novel robust metal organic frameworks AlFSIX-Cu-TPBDA (ZNU-8) with znv topology and SIFSIX-Cu-TPBDA (ZNU-9) wly for efficient capture C2 CO2 . Both ZNU-8 ZNU-9 feature multiple anion functionalities hierarchical porosity. Notably, more anionic binding sites three distinct cages displays both an extremely large capacity (7.94 mmol/g) a high /CO2 (10.3) /C2 (11.6) selectivity. The calculated per (4.94 mol/mol at 1 bar) the highest among all pillared frameworks. Theoretical calculation indicated that strong cooperative hydrogen bonds exist between SiF62- anions in confined cavity, which further confirmed by situ IR spectra. practical separation performance was explicitly demonstrated dynamic breakthrough experiments equimolar mixtures 1/99 under various conditions excellent recyclability benchmark productivity pure (5.13 (48.57 mmol/g).

Language: Английский

Citations

56
Water-stable metal–organic frameworks (MOFs): rational construction and carbon dioxide capture DOI Creative Commons

Cao Xiao,

Jindou Tian,

Qihui Chen

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(5), P. 1570 - 1610

Published: Jan. 1, 2024

This review highlights the design and synthesis of water-stable MOFs, as well their applications in carbon capture.

Language: Английский

Citations

50
Double-walled Al-based MOF with large microporous specific surface area for trace benzene adsorption DOI Creative Commons
Laigang Hu, Wenhao Wu, Min Hu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 13, 2024

Abstract Double-walled metal-organic frameworks (MOFs), synthesized using Zn and Co, are potential porous materials for trace benzene adsorption. Aluminum is with low-toxicity abundance in nature, comparison Co. Therefore, a double-walled Al-based MOF, named as ZJU-520(Al), large microporous specific surface area of 2235 m 2 g –1 , pore size distribution the range 9.26–12.99 Å excellent chemical stability, was synthesized. ZJU-520(Al) consisted by helical chain AlO 6 clusters 4,6-Di(4-carboxyphenyl)pyrimidine ligands. Trace adsorption up to 5.98 mmol at 298 K P/P 0 = 0.01. Adsorbed molecules trapped on two types sites. One (site I) near clusters, another II) N atom ligands, Grand Canonical Monte Carlo simulations. can effectively separate from mixed vapor flow cyclohexane, due affinity higher than that cyclohexane. adsorbent benzene/cyclohexane separation.

Language: Английский

Citations

34
Recent advances on metal–organic frameworks for deep purification of olefins DOI

Yunjia Jiang,

Wenlei Yang, Yuanbin Zhang

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(10), P. 5563 - 5580

Published: Jan. 1, 2024

The efficient removal of trace impurities is significant for the production high-purity olefins. This review summarizes latest advancements in deep purification ethylene and propylene using MOF materials.

Language: Английский

Citations

20
Hierarchical Fibrous Metal–Organic Framework/Ionic Liquid Membranes for Efficient CO2/N2 Separation DOI

Hao Zhao,

Tongtong Zhang, Shaojuan Chen

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

The structural diversity and chemical functionality of metal–organic frameworks (MOFs) render them promising candidates for CO2 adsorption separation. However, their applications are often restricted by intrinsic fragility decreased processability. Herein, a hierarchical fibrous MOF/ionic liquid (IL) membrane was constructed assembling well-ordered ZIF-8 nanounits with an encapsulated IL along the polyimide (PI) fibers. This design promotes formation efficient three-dimensional gas transfer network generates abundance nanopores decorated CO2-philic units, thereby enhancing separation from N2. PI/ZIF-8/IL membranes exhibit remarkable features, including large specific surface area 79.89 m2 g–1, high porosity 93.28%, excellent mechanical stability. Moreover, demonstrate enhanced capacity 3.32 mmol/g at 298 K 1 bar, CO2/N2 selectivity 28, stable recyclable regeneration capability. integrated pore structure proposed in this study provides practical direction rational MOF/IL targeted applications.

Language: Английский

Citations

6
Pore engineering in cost-effective and stable Al-MOFs for efficient capture of the greenhouse gas SF6 DOI

Yongqi Hu,

Lingyao Wang,

Ruihan Nan

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 471, P. 144851 - 144851

Published: July 17, 2023

Language: Английский

Citations

27
Trace SO2 Gas Capture in Stable 3D Viologen Ionic Porous Organic Framework Microsphere DOI
Shanshan Wang, Yue Wu, Xiaoyu Li

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(25), P. 30312 - 30319

Published: June 12, 2023

Eliminating trace sulfur dioxide (SO2) using nanoporous adsorbents is industrially preferred yet of great challenge due to the competitive adsorption CO2. Herein, we reported a highly stable 3D viologen porous organic framework (Viologen-POF) microsphere via one pot polymerization reaction 4,4'-bipyridine and tetrakis(4-(bromomethyl)phenyl)methane. Compared previously irregular POF particles, viologen-POF shows better mass transfer uniformity. Owing intrinsic separated positive negative electric charges center in microspheres, it exhibits excellent SO2 selective capture performance, which can be collaboratively confirmed by static single-component gas adsorption, time-dependent rate, multicomponent dynamic breakthrough experiments. Viologen-POF high absorption capacity (1.45 mmol g-1) at ultralow pressure 0.002 bar SO2/CO2 selectivity 467 298 K 100 kPa (SO2/CO2, 10/90, v/v). The theoretical calculations based on density functional theory (DFT) DMol3 modules Material Studio (MS) were also performed elucidate mechanism toward molecular level. This study represents new type for capture, will pave way applications ionic toxic separation.

Language: Английский

Citations

25
Efficient C2H2/CO2 and C2H2/C2H4 separations in a novel fluorinated metal–organic framework DOI

Yan Han,

Yunjia Jiang,

Jianbo Hu

et al.

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 332, P. 125777 - 125777

Published: Nov. 21, 2023

Language: Английский

Citations

24
Specific Propyne Trapping Sites within a Robust MOF for Efficient Propyne/Propadiene Separation with Record Propadiene Productivity DOI

Yunjia Jiang,

Lingyao Wang, Jianbo Hu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 8, 2023

Abstract Separating propyne/propadiene to produce pure propadiene is extremely challenging in industry due their similar properties. Herein, a novel ZrF 6 2− anion pillared cage‐like metal‐organic framework (termed as CuZrF ‐TPA) for highly efficient separation reported. It exhibits high propyne capacity (177.4/188.6 cm 3 /cm at 0.5/1.0 bar and 298 K), benchmark selectivity (6.0), remarkable potential (5.7 mol L −1 ) simultaneously. Record productivity (≈4.7 achieved through single adsorption process breakthrough experiments with excellent recycle stability even under humid conditions. Based on the structure of propyne‐loaded crystals, two binding sites are identified, including major trapping site windows minor located large cages. Modelling studies further confirm that contracted cage surrounded rotating Lewis basic F atoms aromatic rings optimal bonding capture multiple hydrogen π···π interactions.

Language: Английский

Citations

23
Efficient carbon dioxide capture from flue gas and natural gas by a robust metal–organic framework with record selectivity and excellent granulation performance DOI

Yongqi Hu,

Yuxin Chen,

Wenlei Yang

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 343, P. 127099 - 127099

Published: March 13, 2024

Language: Английский

Citations

13