Shifting C2H2/CO2 Adsorption and Separation in Pillar‐Layered Metal–Organic Frameworks Finely‐Regulated by Molecular Rotation DOI Open Access

Liqiu Yang,

Ying Wang, Wenyu Yuan

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract The efficient separation of C₂H₂/CO₂ mixture is crucial for industrial applications. A promising strategy proposed herein to fine‐tune the C₂H₂/CO 2 adsorption and by pillar‐layered metal–organic framework (MOF) adsorbents via molecular rotation. Keeping same ultramicroporous architecture, three Zn‐X‐TRZ (TRZ = 1,2,4‐triazole) are prepared with X‐pillar rotors varying from 9,10‐anthracenedicarboxylic acid (ADC), 1,4‐naphthalenedicarboxylic (NDC) 1,4‐benzenedicarboxylic (BDC). Remarkably, introduction largest ADC enables Zn‐ADC‐TRZ superior C₂H₂‐selective thermodynamic‐separation ability (highest heat IAST selectivity values) but poor dynamic‐separation performance caused steric hindrance. Conversely, Zn‐BDC‐TRZ smallest exhibit moderate CO₂‐selective ability, excellent CO /C₂H₂ high‐purity C₂H₂ produced at 298 K (>99.5% obtained 70% >99.95% 90% mixture). In contrast, Zn‐NDC‐TRZ medium NDC shows comparable interactions hindrance CO₂, making both thermodynamic dynamic unfavorable. Overall, controllable successfully achieved shifted C H ‐selective regulated pillared rotation within MOFs, providing a useful route practical gas adsorbent exploration.

Language: Английский

Capturing Alkanes from Natural Gas by Using a Hydrogen-bonded Organic Framework Composed of Tetracarboxylic Acid DOI
Jing‐Hong Li, Zhengyi Yuan,

Ruicong Liang

et al.

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Natural gas upgrading is industrially important for its utilization, wherein the recovery of heavier alkanes, such as ethane (C2H6) and propane (C3H8) certain economic importance. Hydrogen-bonded organic frameworks (HOFs) have shown great potential separating alkanes. Such a type porous material so flexible that it very challenging to show permanent porosity separation. Here, we report an ultramicroporous hydrogen-bonded framework HOF-MTBA effective separation ternary mixtures C3H8/C2H6/CH4 binary C2H6/CH4 C3H8/CH4. Upon solvent exchange, accommodates dichloromethane molecules new phase, which can be readily transformed into open phase after desolvation. Single-component sorption experiments exhibit high low-pressure uptakes C2H6 (0.71 mmol/g, at 10 kPa 298 K) C3H8 (1.2 5 K), are higher than many reported adsorbents (0.16–0.73 mmol/g) under same conditions. The adsorptive selectivities C3H8/CH4 calculated 52.7 14.0. breakthrough experiment demonstrates high-purity CH4 obtained from C3H8/C2H6/CH4, C3H8/CH4, C2H6/CH4, respectively.

Language: Английский

Citations

0
Recent progress in metal-organic frameworks (Part II—material application) DOI
Jiandong Pang, Wentao Jiang, Xuewen Zhang

et al.

Science China Chemistry, Journal Year: 2025, Volume and Issue: 68(5), P. 1642 - 1702

Published: Jan. 3, 2025

Language: Английский

Citations

0
Catalytic Efficacy of a 2D Chemically Robust MOF for the Synthesis of Bioactive Diindolylmethane (DIM)‐Based Drug Molecules DOI Open Access
Rupam Sahoo, Bikram Pramanik, Madhab C. Das

et al.

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 14, 2025

Abstract Synthesis of biologically and pharmaceutically important drugs via organic transformations in one pot under mild conditions with efficient catalysts is significant interest terms practical utility. Though metal‐organic frameworks (MOFs) prove their efficiencies various catalytic reactions, synthesis drug molecules employing MOF still its early stage, fact, restricted to only 1,4‐Dihydropyridines (1,4‐DHP) based synthesis. Although the Friedel–Crafts alkylation (FCA) reaction oldest reactions a impact on synthesis, surprisingly this triggered by catalyst largely unexplored. Herein, we report robust framework, MO F : IITKGP‐55 , synthesized solely aqueous medium which exhibits superior for one‐pot FCA well tolerance substrate scopes. Most importantly, reaction, three bioactive diindolylmethane (DIM) core are first time, was never realized any sort heterogeneous catalysts. Moreover, Arundine crystallized an in‐depth crystallographic analysis performed. The excellent framework robustness highlight potentiality developed unwrap new avenue molecule

Language: Английский

Citations

0
Coordination‐Dissociation Induced T1‐Weighted Magnetic Resonance Imaging Responses in a spn‐Type MOF for Potential Drug Release Monitoring DOI Open Access
Dan Luo, Tianze Wu, Tianze Qiu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract Developing novel nanoplatforms capable of monitoring drug release by identifiable magnetic resonance imaging (MRI) responses is a great promising yet challenging task. Here, isoreticular chemistry strategy introduced to enable spn ‐type metal–organic framework (MOF) with T 1 ‐weighted MRI turned‐on response the via coordination‐dissociation process. Post‐synthetic functionalization endows structure high longitudinal relaxivity r 12.63 m −1 s as well abundant accessible coordination sites catch carboxylate probes and drugs. Mechanism studies reveal size‐dependent decrease in coordinated increase size, bulk benzoic acid showing largest reduction at 71%. In vitro model further validate signals respectively coordinating four drugs aromatic groups. Finally, vivo experiments confirm feasibility using this coordination‐dissociation‐induced monitor release. This proof‐of‐principle study demonstrates practical pathway for designing MOF‐based responsive MRI, paving way enhanced non‐invasive techniques.

Language: Английский

Citations

0
Plastic Pores for Switchable and Optimized Adsorption Behaviors DOI Creative Commons

Xuewen Zhang,

Ronghua Wang, Jie‐Peng Zhang

et al.

ACS Central Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Similar to conventional solids, porous materials have demonstrated rigid and flexible behaviors. Here, we show that pores can be not just elastic but also plastic. By variation of the hydrogen-bonding ability steric hindrance ligand side groups, energy difference barrier between metastable states a framework are fine-tuned enable plastic behavior. All pore structures transform target ones in atmospheres guests with sufficiently high pressures, all shaped remain unchanged after guest removal, resulting optimized host-guest recognitions for guests. Up 6-fold increase adsorption selectivity 9-fold purification productivity CO2 capture coalmine CH4 upgrading, even inversion CO2/C2H2 selectivity, been achieved by reversible pore-shaping single plastic-pore adsorbent. The realization creates an opportunity on-demand switching separation functions performances.

Language: Английский

Citations

0
Au Deposition Enhanced Fenton-like Chemistry within a Metal–Organic Framework DOI

Zhining Yuan,

Yehong Wan,

Ling Zhang

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Chemodynamic therapy (CDT), which regulates oxidative stress in tumor tissues, has emerged as a promising alternative. However, the efficiency of MOF-based Fenton catalysts for CDT still needs improvement. This study presents strategy to improve catalytic performance ZnCo-ZIF by depositing Au nanoparticles on its surface. Monodisperse particles (≤200 nm) were prepared optimizing Zn/Co ratio, and deposition enhanced electron transfer between Co, increasing charge density around Co atoms. resulted 2.28-fold improvement activity under acidic conditions mild near-infrared (NIR) light. Loading system with natural product naringin (NA) molecule further demonstrated synergistic anticancer effects vitro. work offers insights into enhancing cancer therapy.

Language: Английский

Citations

0
Electrochemical‐Thermochemical Cascade System for the Sustainable Conversion of Crude Acetylene to C6+ Esters DOI
Wei Jiang,

Dayin He,

Xianhui Ma

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

Abstract Acetylene (C 2 H ), a critical chemical feedstock derived from natural gas or coal, faces sustainability challenges due to high CO₂ emissions conventional production methods. These not only contribute carbon footprints but also hinder the upgrading of C . Herein, two‐step electrochemical and thermochemical cascade system that directly converts CO₂‐contaminated crude acetylene into 6+ esters is proposed. In first step, captured by hydroxide form bicarbonate, which subsequently released in situ at cathode under electrolysis. Using Ni single‐atom catalyst, CO efficiently generated with Faradaic efficiency 97.8 ± 0.84% 100 mA cm −2 The then reacts second where Pd‐based catalyst enables dimethyl butenedioate 7.83 0.31 mmol L −1 h selective maleate synthesis (>65% selectivity). Furthermore, replacing methanol ethanol butanol carbonylation step allows for tunable diethyl dibutyl butenedioate, demonstrating broad applicability. Techno‐economic analysis indicates 46.9% cost reduction compared traditional reverse water‐gas shift system, attributed lower energy demands eliminated separation steps. This work provides green strategy valorizing low‐value streams while mitigating emissions.

Language: Английский

Citations

0
A microporous fluorinated MOF for efficient separation of C2H2 from C2H2/CO2 and C2H2/C2H4 mixtures DOI

Haiyu Li,

Zhen‐Zhen Xue, Song‐De Han

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 130094 - 130094

Published: Oct. 1, 2024

Language: Английский

Citations

1
Shifting C2H2/CO2 Adsorption and Separation in Pillar‐Layered Metal–Organic Frameworks Finely‐Regulated by Molecular Rotation DOI Open Access

Liqiu Yang,

Ying Wang, Wenyu Yuan

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Abstract The efficient separation of C₂H₂/CO₂ mixture is crucial for industrial applications. A promising strategy proposed herein to fine‐tune the C₂H₂/CO 2 adsorption and by pillar‐layered metal–organic framework (MOF) adsorbents via molecular rotation. Keeping same ultramicroporous architecture, three Zn‐X‐TRZ (TRZ = 1,2,4‐triazole) are prepared with X‐pillar rotors varying from 9,10‐anthracenedicarboxylic acid (ADC), 1,4‐naphthalenedicarboxylic (NDC) 1,4‐benzenedicarboxylic (BDC). Remarkably, introduction largest ADC enables Zn‐ADC‐TRZ superior C₂H₂‐selective thermodynamic‐separation ability (highest heat IAST selectivity values) but poor dynamic‐separation performance caused steric hindrance. Conversely, Zn‐BDC‐TRZ smallest exhibit moderate CO₂‐selective ability, excellent CO /C₂H₂ high‐purity C₂H₂ produced at 298 K (>99.5% obtained 70% >99.95% 90% mixture). In contrast, Zn‐NDC‐TRZ medium NDC shows comparable interactions hindrance CO₂, making both thermodynamic dynamic unfavorable. Overall, controllable successfully achieved shifted C H ‐selective regulated pillared rotation within MOFs, providing a useful route practical gas adsorbent exploration.

Language: Английский

Citations

0