Meso‐ and Microporous Metal–Organic Frameworks for Efficient Photo‐Oxidation of Benzylamine DOI
Lifei Liu, Yang Xiao-qing, Pengfei Li

et al.

Applied Organometallic Chemistry, Journal Year: 2024, Volume and Issue: 38(11)

Published: Aug. 11, 2024

ABSTRACT The construction of metal–organic frameworks (MOFs) with desirable structures for high‐performance photocatalysis is attractive but remains challenging. Here, a hierarchically meso‐ and microporous sc Cu‐MOF‐74 was synthesized in supercritical CO 2 ( )/methanol solution. Compared the conventional Cu‐MOF‐74, has more exposed accessible Lewis acid sites derived from missing‐linker defects. unique structure endows superior molecular accessibility, enhanced separation, transfer efficiency photogenerated charges. High catalytic activity reusability can be achieved photo‐oxidative coupling amines, reaching maximum N‐benzylbenzaldimine yield rate 4.80 mmol g −1 h under mild conditions, that is, air atmosphere room temperature. This study provides new idea improving intrinsic photocatalytic activities MOFs.

Language: Английский

Metal–Organic Framework with Space-Partition Pores by Fluorinated Anions for Benchmark C2H2/CO2 Separation DOI
Yuanbin Zhang,

Yan Han,

Binquan Luan

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(25), P. 17220 - 17229

Published: June 11, 2024

The efficient separation of C2H2 from C2H2/CO2 or C2H2/CO2/CH4 mixtures is crucial for achieving high-purity (>99%), essential in producing contemporary commodity chemicals. In this report, we present ZNU-12, a metal–organic framework with space-partitioned pores formed by inorganic fluorinated anions, highly and separation. framework, partitioned SiF62– anions into three distinct cages, enables both high capacity (176.5 cm3/g at 298 K 1.0 bar) outstanding selectivity over CO2 (13.4) CH4 (233.5) simultaneously. Notably, achieve record-high productivity (132.7, 105.9, 98.8, 80.0 L/kg 99.5% purity) (v/v = 50/50) 1/1/1, 1/1/2, 1/1/8) through cycle adsorption–desorption breakthrough experiments recovery rates. Theoretical calculations suggest the presence potent "2 + 2" collaborative hydrogen bonds between two hexafluorosilicate (SiF62–) confined cavities.

Language: Английский

Citations

42
Discrimination of p-xylene from xylene isomers by precisely tuning the spacing of an interpenetrated metal–organic framework DOI
Na Sun,

Xue Zhou,

J.L. Liu

et al.

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

By adjusting the alkyl carbon number on ligand in SYUCT-111, pore size can be precisely adjusted to achieve high selectivity separating PX from C 8 isomers.

Language: Английский

Citations

1
Solvent-Free Synthesis of HKUST-1 with Abundant Defect Sites and Its Catalytic Performance in the Esterification Reaction of Oleic Acid DOI Creative Commons

Ahmed S. Abou-Elyazed,

Abdelhalim I. Ftooh,

Yinyong Sun

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(36), P. 37662 - 37671

Published: Aug. 24, 2024

HKUST-1 has received increasing attention because of its potential applications in many fields, such as heterogeneous catalysis, sensors, gas storage, and separation. Herein, we report that can be facilely prepared by heating a ground mixture copper nitrate trihydrate 1,3,5-benzenetricarboxylic acid an autoclave at 80 °C for 10 h. The data from nitrogen sorption show the obtained material, named HKUST-1-free, possesses high BET specific surface area 1671 m2/g pore volume 0.8 cm3/g. results acid–base titration indicate number defect sites HKUST-1-free is more than HKUST-1-solvent solvothermal method. As catalyst, gave yield (91%) methyl oleate esterification reaction oleic with methanol room temperature compared to (70%). Additionally, it proven catalyst reused.

Language: Английский

Citations

5
Selective Separation of C8 Aromatics by an Interpenetrating Metal–Organic Framework Material DOI Creative Commons
Na Sun,

Xue Zhou,

Yu Han

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 27, 2024

O-xylene (OX) is an important chemical raw material, but it often produced in mixtures with other C

Language: Английский

Citations

5
Magnetic and Porous Regulation in Cobalt(II) Hydrogen-Bonded Organic Framework via Supramolecular Isomerism DOI

Jing-Yan Zhu,

Kusum Kumari, Shijie Chen

et al.

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(8), P. 3449 - 3457

Published: April 2, 2024

Supramolecular isomerism has been recognized as an effective strategy for manipulating structures and properties, particularly in metal–hydrogen-bonded organic frameworks (MHOFs). However, it less studied the context of magnetic dynamics. In this study, we reinvestigated two previously reported cobalt(II) HOFs, {[(H2O)2Co(Hbic)2]·sol}n (H2bic = 1H-benzimidazole-5-carboxylic acid; 1, Sol 2DMF·1.5H2O; 2, H2O), which exhibit unique supramolecular isomerism. both complexes, octahedral Co(II) ions are connected by deprotonated Hbic-ligands to form one-dimensional chains, then sustained into three-dimensional prominent N–H···O hydrogen-bonding interactions. This results significantly different porosities N2-adsorption abilities: a high solvent-accessible void 46.2% desolvated phase compared only 2.3% that likely due additional π–π stacking Interestingly, our studies revealed 1 2 typical single ion magnet behaviors, with alternating relaxation dynamics (Raman, direct, QTM 1; Raman direct 2). These findings demonstrate structures, stability, porosities, properties MHOF materials can be effectively tuned through isomerization approach.

Language: Английский

Citations

4
Functionalized Metal–Organic Framework with Azo Double and Amide Groups for Highly Efficient Iodine Capture DOI

Meng-Meng Suo,

Guo‐Ping Yang, Yao‐Yu Wang

et al.

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(9), P. 3933 - 3940

Published: April 19, 2024

The development of practical techniques for trapping radioactive iodine (I2) is crucial to the safe nuclear power. Herein, we reported a functionalized porous metal–organic framework (MOF), [Zn3(ABTC)1.5(4-Hpich)(H2O)3]·10H2O (Zn-ABTC) (H4ABTC = 2,2′,5,5′-azobenzenetetracarboxylic acid, 4-Hpcih 4-pyridinecarbaldehyde isonicotinoyl hydrazone), with azo double and amide groups. adsorption experiments showed that Zn-ABTC exhibited excellent capacity volatile I2 (2.02 g g–1) cyclohexane solution (526 mg due introduction nitrogen oxygen active sites into framework. Furthermore, has recoverability stability, retaining its capacity, even after five cycles. spectroscopic analysis revealed multiple interactions between molecules as well This work provides rational strategy constructing functional MOF materials adsorption.

Language: Английский

Citations

4
Solvent Regulation in Layered Zn-MOFs for C2H2/CO2 and CO2/CH4 Separation DOI Creative Commons

Xingyao Zhao,

Xiaotong Chang,

C.M. Qin

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(5), P. 1171 - 1171

Published: March 5, 2025

The development of alternative adsorptive separation technologies is extremely significant for the C2H2/CO2 and CO2/CH4 in chemical industry. Emerging metal–organic frameworks (MOFs) have shown great potential as adsorbents gas adsorption separation. Herein, we synthesized two layered Zn-MOFs, UPC-96 UPC-97, with 1,2,4,5-tetrakis(4-carboxyphenyl)-3,6-dimethylbenzene (TCPB-Me) a ligand via solvent regulation pH values. completely deprotonated was obtained without addition acid, exhibiting different channels cross-sectional sizes 11.6 × 7.1 8.3 5.2 Å2. In contrast, acid led to partial deprotonation afforded UPC-97 types 11.5 5.7 7.4 3.9 Reversible N2 isotherms at 77 K confirmed their permanent porosity, differentiated single-component C2H2, CO2, CH4 indicated

Language: Английский

Citations

0
Hollow structured Fe@C nanorods for boosting dehydrogenation properties of α-AlH3 DOI
Yuan Zhao,

Qingshuang Wang,

Dongming Yin

et al.

Nano Research, Journal Year: 2024, Volume and Issue: 17(9), P. 8184 - 8191

Published: July 23, 2024

Language: Английский

Citations

2
Recent progress in metal-organic frameworks: part I—material preparation DOI
Jiandong Pang, Zhengqing Zhang, Shitong Zhang

et al.

Science China Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 31, 2024

Language: Английский

Citations

2
Dual modifications of sensitizers and lanthanide ions on a two-dimensional zirconium-based metal–organic framework for photoluminescent detection DOI

Jhe-Wei Chang,

Tzu-Chi Lin,

Youliang Chen

et al.

CrystEngComm, Journal Year: 2024, Volume and Issue: 26(22), P. 2852 - 2861

Published: Jan. 1, 2024

Luminescent 2D Zr-based MOFs for sensing Fe( iii ) ions were synthesized by dual post-synthetic modifications of photosensitizing ligands and terbium ions.

Language: Английский

Citations

1