A5046617614- Metal-Organic Frameworks: Synthesis and Applications
- Membrane Separation and Gas Transport
- Covalent Organic Framework Applications
- Graphene research and applications
- Conducting polymers and applications
- Zeolite Catalysis and Synthesis
- Analytical Chemistry and Sensors
- MXene and MAX Phase Materials
- Gas Sensing Nanomaterials and Sensors
- Hydrogen Storage and Materials
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Reconstructive Surgery and Microvascular Techniques
- Thermal and Kinetic Analysis
- 2D Materials and Applications
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Advanced biosensing and bioanalysis techniques
- Membrane Separation Technologies
- Layered Double Hydroxides Synthesis and Applications
- Advancements in Battery Materials
- Mesoporous Materials and Catalysis
- Reconstructive Facial Surgery Techniques
- Carbon Dioxide Capture Technologies
- Hybrid Renewable Energy Systems
École Polytechnique Fédérale de Lausanne
2023-2025
Fifth Hospital of Shijiazhuang
2025
Separation Systems (United States)
2025
Tianjin University
2019-2023
Collaborative Innovation Center of Chemical Science and Engineering Tianjin
2019-2022
Shanghai Institute of Ceramics
2006-2008
Chinese Academy of Sciences
2006-2008
Northwest University
2005
Covalent organic framework (COF) membranes with tunable ordered channels and free groups hold great promise in molecular separations owing to the synergy of physical chemical microenvironments. Herein, we develop a defect engineering strategy fabricate COF for efficient CO2 separation. Abundant amino are situ generated on nanosheets arising from missing-linker defects during reactive assembly amine monomer mixed aldehyde monomers. The assembled membranes. Amino groups, as facilitated...
Molecular-sieving membranes from metal-organic frameworks (MOFs) are promising candidates for separating olefin/paraffin mixtures, a critical demand in sustainable chemical processes and grand challenge molecular separation. Currently, the inherent lattice flexibility of MOFs severely compromises their precise sieving ability. Here, proof-of-concept "alloy" (AMs), which fabricated by incorporating quaternary ammonium (QA)-functionalized covalent organic (COFs) into zeolitic imidazolate...
Abstract Fabricating ultrathin covalent organic framework (COF) membranes toward high‐permeance molecular separations is highly desired yet challenging. Herein, a polyelectrolyte‐mediated assembly (PMA) strategy developed to fabricate ionic COF membrane for efficient CO 2 separation. The PMA allows facile control over the mode between polyethyleneimine (PEI) and TpPa‐SO 3 H, yielding PEI‐bridged ultra‐large nanosheets which are readily processed into with thickness down 8 nm. resulting...
Abstract Zeolitic imidazolate frameworks (ZIFs) are a subset of metal–organic with more than 200 characterized crystalline and amorphous networks made divalent transition metal centres (for example, Zn 2+ Co ) linked by linkers. ZIF thin films have been intensively pursued, motivated the desire to prepare membranes for selective gas liquid separations. To achieve high throughput, as in ångström-scale biological channels nanometre-scale path lengths, minimum possible thickness—down just one...
Ionic covalent organic framework nanosheets (iCOFNs) with long-range ordered and mono-dispersed ionic groups hold great potential in many advanced applications. Considering the inherent drawbacks of oil-water biphase method, herein, we explore an oil-water-oil triphase method based on phase engineering strategy for bottom-up synthesis iCOFNs. The middle water serves as a confined reaction region, two oil phases are reservoirs storing supplying monomers to phase. A large aqueous space low...
This Perspective focuses on innovation and advanced design of membranes for carbon dioxide separation, triggered by new organic microporous materials.
Abstract Metal–organic frameworks (MOFs) are one of the most promising membrane materials for olefin/paraffin separations. However, MOF membranes have a thickness over 1 µm, which greatly compromises permeation flux. While previous studies focused on increasing crystal nucleus density substrates, achieving ultrathin via modulation growth is lacking. Herein, an inhibited Ostwald ripening (IOR) strategy proposed to fabricate ZIF‐8 membranes, through incorporating polymer‐based inhibitors into...
Abstract The preparation of atom-thick porous lattice hosting Å-scale pores is attractive to achieve a large ion-ion selectivity in combination with ion flux. Graphene film an ideal selective layer for this if high-precision can be incorporated, however, it challenging avoid larger non-selective at the tail-end pore size distribution which reduces selectivity. Herein, we develop strategy overcome challenge using electrochemical repair that successfully masks large-area graphene. 10-nm-thick...
The synthesis of MOFs in a two-dimensional (2D) film morphology is attractive for several applications including molecular and ionic separation. However, 2D have only been reported from structures that crystallize lamellar morphology, where layers are held together by van der Waals (vdW) interaction. By comparison, UiO-66, one the most studied because its exceptional chemical stability, has three-dimensional (3D) morphology. UiO-66 challenging to obtain given robust isotropic bonds cubic...
<title>Abstract</title> <bold>Background</bold> Osseointegration is considered a prerequisite for predicting implant success, and structure, biocompatibility, properties of the are important parts factors that influence osseointegration. The focus current research on how to increase strength osseointegration shorten time.<bold>Methods</bold> In this research, different porous scaffolds, including uniform, radial-gradient, axial-gradient porous,were designed fabricated. Their mechanical...
Abstract Selective dopamine (DA) determinations using porous‐carbon‐modified glassy carbon electrodes (GCE) in the presence of ascorbic acid (AA) were studied. The effects structure textures and surface functional groups porous carbons on electrochemical behavior DA was analyzed based both cyclic voltammetry (CV) differential pulse (DPV) measurements. modified GCE determined 400‐fold excess AA, linear determination ranges 0.05–0.99, 0.20–1.96, 0.6–12.60 μM with lowest detected concentrations...
Abstract Covalent organic framework (COF) membranes with tunable ordered channels and free groups hold great promise in molecular separations owing to the synergy of physical chemical microenvironments. Herein, we develop a defect engineering strategy fabricate COF for efficient CO 2 separation. Abundant amino are situ generated on nanosheets arising from missing‐linker defects during reactive assembly amine monomer mixed aldehyde monomers. The assembled membranes. Amino groups, as...
Abstract Ionic covalent organic framework nanosheets (iCOFNs) with long‐range ordered and mono‐dispersed ionic groups hold great potential in many advanced applications. Considering the inherent drawbacks of oil–water biphase method, herein, we explore an oil–water–oil triphase method based on phase engineering strategy for bottom‐up synthesis iCOFNs. The middle water serves as a confined reaction region, two oil phases are reservoirs storing supplying monomers to phase. A large aqueous...
Hexagonal zinc sulfide nanocrystals (ZnS NCs) were prepared under mild solvothermal condition at 170°C with the polymer ester used as ligand for their stability and effective passivation. Well-defined absorption peaks largest blueshift of 89nm observed ZnS NCs based on ultraviolet-visible (UV-vis) spectra analyses compared that bulk one, which are in correspondence apparent quantum confinement effects. Well excited states obtained from UV-vis photoluminescent excitation (PLE) NCs. PL...
The synthesis of MOFs in two-dimensional (2D) film morphology is attractive for several applications including molecular and ionic separation. However, 2D have only been reported from structures that crystallize lamellar where layers are held together by van-der-Waals (vdW) interaction. For example, UiO-66, one the most studied thanks to its exceptional chemical stability, has three-dimensional (3D) morphology. UiO-66 challenging obtain given robust isotropic bonds cubic crystal structure....