Here, we propose to modify the hydrophilicity of metal-organic framework (MOF) particles by an interfacial assembling route, which is based on the surface-active nature of MOF particles. It was found that hydrophilic UiO-66-NH particles can be converted to hydrophobic particles through an oil-water interfacial assembling route. The underlying mechanism for the conversion of UiO-66-NH was investigated by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. It was revealed that the close assembly of UiO-66-NH particles at the oil-water interface strengthens the coordination between organic ligands and metal ions, which results in a decrease in the proportion of hydrophilic groups on UiO-66-NH particle surfaces. Hydrophobic UiO-66-NH particles show improved adsorption capacity for dyes in organic solvents compared with pristine UiO-66-NH particles. It is expected that the interfacial assembling route can be applied to the synthesis of different kinds of MOF materials with tunable hydrophilicity or hydrophobicity required for diverse applications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.langmuir.7b02365 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Functionalization of Graphene by Interfacial Engineering in Thermally Conductive Nanofibrillated Cellulose Films.
Langmuir
January 2025
Research Center of Nanoscience and Nanotechnology, College of Science, Shanghai University, Shanghai 200444, P. R. China.
Flexible nanocomposites incorporating nanofibrillated cellulose (NFC) hold significant promise for thermal management applications. However, their heat dissipation performance is primarily constrained by the interfacial thermal resistance (). In this work, 1-pyrenemethylamine hydrochloride (PyNH) noncovalent functionalized graphene subsequently self-assembled with NFC through a vacuum-assisted filtration technique.
View Article and Find Full Text PDFKinetic Control of Self-Assembly Pathway in Dual Dynamic Covalent Polymeric Systems.
Angew Chem Int Ed Engl
January 2025
East China University of Science and Technology, School of Chemistry and Molecular Engineering, Meilong Road 130, 200237, Shanghai, CHINA.
Kinetically controlled self-assembly is garnering increasing interest in the field of supramolecular polymers and materials, yet examples involving dynamic covalent exchange remain relatively unexplored. Here we report an unexpected dynamic covalent polymeric system whose aqueous self-assembly pathway is strongly influenced by the kinetics of evaporation of water. The key design is to integrate dual dynamic covalent bonds-including disulfide bonds and boroxine/borate-into a dynamic equilibrium system of monomers, polymers, and materials.
View Article and Find Full Text PDFEfficient and Scalable Direct Regeneration of Spent Layered Cathode Materials via Advanced Oxidation.
Adv Mater
January 2025
Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
Among direct recycling methods for spent lithium-ion batteries, solid-state regeneration is the route with minimal bottlenecks for industrial application and is highly compatible with the current industrial cathode materials production processes. However, surface structure degradation and interfacial impurities of spent cathodes significantly hinder Li replenishment during restoration. Herein, we propose a unique advanced oxidation strategy that leverages the inherent catalytic activity of spent layered cathode materials to address these challenges.
View Article and Find Full Text PDFCartilaginous microtissues exhibit extreme resilience under compression with size-dependent mechanical properties.
Biomaterials
January 2025
Prometheus Division of Skeletal Tissue Engineering, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium; Skeletal Biology and Engineering Research, KU Leuven, ON1 Herestraat 49, PB 813, 3000, Leuven, Belgium. Electronic address:
Self-assembled cartilaginous microtissues provide a promising means of repairing challenging skeletal defects and connective tissues. However, despite their considerable promise in tissue engineering, the mechanical response of these engineered microtissues is not well understood. Here we examine the mechanical and viscoelastic response of progenitor cell aggregates formed from human primary periosteal cells and the resulting cartilaginous microtissues under large deformations as might be encountered in vivo.
View Article and Find Full Text PDFCo-Atomic Interface Minimizing Charge Transfer Barrier in Polytypic Perovskites for CO Photoreduction.
Adv Sci (Weinh)
January 2025
School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, 611731, China.
Heterojunctions, known for their decent separation of photo-generated electrons and holes, are promising for photocatalytic CO reduction. However, a significant obstacle in traditional post-assembled heterojunctions is the high interfacial barrier for charge transfer caused by atomic lattice mismatch at multiphase interfaces. Here, as research prototypes, the study creates a lattice-matched co-atomic interface within CsPbBr-CsPbBr polytypic nanocrystals (113-125 PNs) through the proposed in situ hybrid strategy to elucidate the underlying charge transfer mechanism within this unique interface.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!