High-Interface Alkalinity Induced by Intercalated Squaric Acid Anions for 700 Hours of Oxygen Evolution at 3 A cm−2 DOI Creative Commons
Bin Zhang,

Ruo‐Yao Fan,

Shanshan Lu

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Abstract The corrosive acidic interfacial microenvironment caused by rapid multistep deprotonation of the alkaline oxygen evolution reaction (OER) in industrial high-current water electrolysis is one key problems limiting activity and stability. Some functional anions derived from electrocatalysis exhibit special functionalities modulating catalytic interface microenvironment, but this matter has not received adequate attention academic discussions. coordinated squaric acid molecule revealed to undergo a dissolve-reintercalation process OER, leading its eventual stabilization within Fe-doped NiOOH interlayer form (Sq2−) (NiFe-SQ/NF-R). This intercalated Sq2− stabilizes OH through multiple hydrogen bond interactions, which conducive maintaining high alkalinity. Hence, acidification prepared NiFe-SQ/NF-R OER significantly inhibited, resulting tenfold increase durability (from 65 700 hours) when exposed current density 3.0 A cm− 2, as opposed traditional NiFe-LDH/NF-R materials. anion guarantees enduring performance NiFe-derived electrocatalyst under densities controlling

Language: Английский

A Highly Chemically Robust 3D Interpenetrated MOF Heterogeneous Catalyst for the Synthesis of Hantzsch 1,4‐Dihydropyridines and Drug Molecules DOI
Rupam Sahoo, Bikram Pramanik, Supriya Mondal

et al.

Small, Journal Year: 2024, Volume and Issue: 20(25)

Published: Jan. 8, 2024

Abstract Metal–organic frameworks (MOFs) have attracted immense attention as efficient heterogeneous catalysts over other solid catalysts, however, their chemical environment instability often limits catalytic potential. Herein, utilizing a flexible unexplored tetra‐acid ligand and employing the mixed approach, 3D interpenetrated robust framework is strategically developed, IITKGP‐51 (IITKGP stands for Indian Institute of Technology Kharagpur), which retained its crystallinity wide range pH solution (4–12). Having ample open metal sites (OMSs), explored catalyst in one‐pot Hantzsch condensation reaction, with low loading broad substrates. The synthesis drug molecules remains one most significant emergent areas organic medicinal chemistry. Considering such practical utility, biologically important Nemadipine B Nifedipine (calcium channel protein inhibitor) are synthesized first time by using this fully characterized via SC‐XRD spectroscopic methods. This report inaugurates usage MOF material molecules.

Language: Английский

Citations

26

Highly Robust Metal–Organic Framework for Efficiently Catalyzing Knoevenagel Condensation and the Strecker Reaction under Solvent-Free Conditions DOI
Rupam Sahoo, Supriya Mondal,

Santanu Chand

et al.

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(32), P. 12989 - 13000

Published: Aug. 2, 2023

Metal–organic frameworks (MOFs) have been recognized as one of the most promising porous materials and offer great opportunities for rational design new catalytic solids having structural diversity functional tunability. Despite numerous inherent merits, their chemical environment instability limits practical usage demands further exploration. Herein, by employing mixed-ligand approach, we designed developed a robust 3D Co-MOF, [Co2(μ2-O)(TDC)2(L)(H2O)2]·2DMF (H2TDC = 2,5-thiophenedicarboxylic acid, L 3,3′-azobispyridine), IITKGP-50 (IITKGP stands Indian Institute Technology Kharagpur), which exhibited excellent framework robustness not only in water but also wide range aqueous pH solutions (pH 2–12). Taking advantage superior presence high-density open metal sites, was explored catalyzing two-component Knoevenagel condensation reaction three-component Strecker reactions. Moreover, to verify size selectivity IITKGP-50, smaller bulkier substrates comparison with MOF's pore cavity (8.1 × 5.6 Å2) were employed, relatively lesser conversions sterically aldehyde derivatives confirmed that cycle occurs inside cavity. The easy scalability, lower catalyst loading compared benchmark MOFs, magnificent conversion rate over substrates, recyclability without significant performance loss made heterogeneous candidate.

Language: Английский

Citations

26

Advancements in rare earth metal-organic frameworks: Harnessing the power of photonics and beyond DOI
Yahui Zhang,

Penghui Wei,

Zi‐Wen Li

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215905 - 215905

Published: May 12, 2024

Language: Английский

Citations

17

Engineered MXene-polymer composites for water remediation: Promises, challenges and future perspective DOI
Roham Ghanbari, Ehsan Nazarzadeh Zare‬

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 518, P. 216089 - 216089

Published: July 16, 2024

Language: Английский

Citations

17

Covalent Organic Frameworks for Membrane Separation DOI Creative Commons
Yuwei Jin, Menghao Li, Ying‐Wei Yang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 11, 2024

Membranes with switchable wettability, solvent resistance, and toughness have emerged as promising materials for separation applications. However, challenges like limited mechanical strength, poor chemical stability, structural defects during membrane fabrication hinder their widespread adoption. Covalent organic frameworks (COFs), crystalline constructed from molecules connected by covalent bonds, offer a solution due to high porosity, customizable properties. The ordered structures functionality provide COFs lightweight framework, large surface area, tunable pore sizes, which attracted increasing attention applications in separations. Recent research has extensively explored the preparation strategies of COF membranes various processes. This review uniquely delves into influence techniques, including interfacial polymerization, layer-by-layer assembly, situ growth, on thickness performance. It comprehensively explores design potential these methods, particular focus gas separation, oil/water nanofiltration. Furthermore, future opportunities, within this field, directions development are proposed.

Language: Английский

Citations

17

Improving the removal efficiency of oxygenated volatile organic compounds by defective UiO-66 regulated with water DOI
Jiajun Yu, Xiao Wang,

Guanhong Lu

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 134055 - 134055

Published: March 15, 2024

Language: Английский

Citations

15

Integration of ordered porous materials for targeted three-component gas separation DOI Creative Commons
Xue Jiang, Yu Wang, Wang Hui

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 15, 2025

Separation of multi-component mixtures in an energy-efficient manner has important practical impact chemical industry but is highly challenging. Especially, targeted simultaneous removal multiple impurities to purify the desired product one-step separation process extremely difficult task. We introduced a pore integration strategy modularizing ordered structures with specific functions for on-demand assembly deal complex systems, which are unattainable by each individual pore. As proof concept, two ultramicroporous nanocrystals (one C2H2-selective and other CO2-selective) as shell pores were respectively grown on C2H6-selective porous material core Both respective pore-integrated materials show excellent ethylene production performance dynamic breakthrough experiments C2H2/C2H4/C2H6 CO2/C2H4/C2H6 gas mixture, even better than that from traditional tandem-packing processes originated optimized mass/heat transfer. Thermodynamic simulation results explained pre-designed modules can perform target independently materials. Pore offers approach assembling demand achieve mixtures.

Language: Английский

Citations

2

A chemically robust SIFSIX MOF as electrocatalyst in alkaline hydrogen evolution reaction (HER) DOI
Ujjwal Phadikar, Rupam Sahoo, Madhab C. Das

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 117, P. 135 - 145

Published: March 15, 2025

Language: Английский

Citations

2

Water‐Stable Metal Azolate Frameworks Showing Interesting Flexibilities for Highly Effective Bioethanol Dehydration DOI

Yu‐Cheng Tang,

Zhi‐Shuo Wang, Yi Heng

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(24)

Published: April 11, 2023

The ethanol/water separation challenge highlights the adsorption capacity/selectivity trade-off problem. We show that target guest can serve as a gating component of host to block undesired guest, giving molecular sieving effect for adsorbent possessing large pores. Two hydrophilic/water-stable metal azolate frameworks were designed compare effects and pore-opening flexibility. Large amounts (up 28.7 mmol g-1 ) ethanol with fuel-grade (99.5 %+) even higher purities (99.9999 be produced in single process from not only 95 : 5 but also 10 90 mixtures. More interestingly, pore apertures showed high water capacity exceptionally water/ethanol selectivity characteristic sieving. Computational simulations demonstrated critical role guest-anchoring aperture guest-dominated process.

Language: Английский

Citations

23

Functional Construction of a Novel Lanthanide MOF for Efficient Ratio Luminescence Detection of Ethanol Vapor DOI

Yiliang Sun,

Wang Xiao-yan, Shiying Liu

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(22)

Published: May 3, 2024

Abstract It is necessary to develop excellent sensors for volatile organic compounds (VOCs) detection from the perspective of environmental protection and human health. Luminescent lanthanide metal‐organic frameworks (MOFs) have many advantages such as porosity, luminescence, structural controllability, making them very suitable luminescent sensing materials. Based on a functional oriented strategy, novel Ln‐MOFs are successfully constructed their structure properties characterized in detail. A series vapor luminescence tests shown that Eu/Tb doped L1‐Eu 0.1 /Tb 0.9 not only exhibits high selectivity alcohols, especially ethanol vapor, but also has sensitivity extremely low limit (9.76 mg L −1 ). To knowledge, there no reports ratio based those with performance. Crystal determination demonstrates binds framework through multiple hydrogen bonding interactions, altering energy transfer efficiency between Tb 3+ Eu achieve detection. In addition, good repeatability, prepared thin film material portability processability. This work can provide some experience development VOCs materials better

Language: Английский

Citations

8