In this article, liquid moisture transport behaviors of dual-layer electrospun nanofibrous mats are reported for the first time. The dual-layer mats consist of a thick layer of hydrophilic polyacrylonitrile (PAN) nanofibers with a thin layer of hydrophobic polystyrene (PS) nanofibers with and without interpenetrating nanopores, respectively. The mats are coated with polydopamine (PDOPA) to different extents to tailor the water wettability of the PS layer. It is found that with a large quantity of nanochannels, the porous PS nanofibers exhibit a stronger capillary effect than the solid PS nanofibers. The capillary motion in the porous PS nanofibers can be further enhanced by slight surface modification with PDOPA while retaining the large hydrophobicity difference between the two layers, inducing a strong push-pull effect to transport water from the PS to the PAN layer.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/am503417w | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Engineered sulfonated porous carbon/cellulose nanofiber hybrid membrane for high-efficiency osmotic energy conversion applications.
Int J Biol Macromol
January 2025
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China. Electronic address:
Harnessing ionic gradients to generate electricity has inspired the development of nanofluidic membranes with charged nanochannels for osmotic energy conversion. However, achieving high-performance osmotic energy output remains elusive due to the trade-off between ion selectivity and nanochannel membrane permeability. In this study, we report a homogeneous nanofluidic membrane, composed of sulfonated nanoporous carbon (SPC) and TEMPO-oxidized cellulose nanofibers (T-CNF), engineered to overcome these limitations.
View Article and Find Full Text PDFUltrafast, Robust, and Reversible Self-Assembled Nanofibers via Thiolactone Chemistry Strategy.
Small
January 2025
Xi'an Key Laboratory of Functional Organic Porous Materials, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710129, P. R. China.
Self-assembly in supramolecular chemistry is crucial for nanostructure creation but faces challenges like slow speeds and lack of reversibility. In this study, a novel comb-like polymer poly(amide sulfide) (PAS) based on thiolactone chemistry is reported, which rapidly self-assemble into stable nanofibers, offering excellent robustness and reversibility in the self-assembled structure. The PAS backbone contains pairs of amide bonds, each linked to an alkyl side chain in a controlled 2:1 ratio.
View Article and Find Full Text PDFConstruction of MOF-derived Vanadium Nitride Decorated Micro/mesoporous Carbon Nanofibers for Aqueous Zinc-Ion Batteries.
Chemistry
January 2025
Westlake University, School of Engineering, 18 Shilongshan Road, 310024, Hangzhou, CHINA.
Design and manufacture of cathode materials, with suitable pore structure and high electrical conductivity to matching zinc anode, solving the problem of dissolution and structural degradation of cathode materials for zinc ion batteries (ZIBs), is great significance to the development of ZIBs. Herein, Vanadium Nitride (VN) uniformly decorated N-doped micro/mesoporous carbon nanofibers (VN/N-MCNF) with appropriate porous and reactive sites for Zn2+ is prepared by using V-MOF, as important precursor via electrostatic spinning and pyrolysis technique. As a cathode electrode for ZIBs, the VN/N-MCNF is suitable for diffusion and adsorption of large-sized solvated structured [Zn(H2O)6]2+, for its abundant micro/mesoporous structure and good electrical conductivity.
View Article and Find Full Text PDFFlexible Phase Change Materials with High Energy Storage Density Based on Porous Carbon Fibers.
Polymers (Basel)
December 2024
Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, Guangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Devices, South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China.
Phase change fibers (PCFs) can effectively store and release heat, improve energy efficiency, and provide a basis for a wide range of energy applications. Improving energy storage density and preserving flexibility are the primary issues in the efficient manufacture and application development of PCFs. Herein, we have successfully fabricated a suite of flexible PCFs with high energy storage density, which use hollow carbon fibers (HCFs) encapsulated phase change materials (PCMs) to provide efficient heat storage and release, thereby enhancing energy efficiency and underpinning a broad range of energy applications.
View Article and Find Full Text PDFHigh-Aspect-Ratio InGaO Integrated with Amorphous AlO Nanofibers: All-Inorganic Self-Supporting Wearable Membranes for Ultralow-Concentration NO Sensing in Simulated Exhalation.
Nano Lett
January 2025
School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
Article Synopsis
- The study addresses challenges in creating flexible, breathable, and sensitive inorganic semiconductor gas sensors for wearable use in humid conditions.
- Researchers developed a self-supporting InGaO-AlO/AlO nanofiber membrane sensor using an innovative dual-spinneret electrospinning technique, featuring a unique bilayer structure.
- The resulting sensor is highly effective for detecting low concentrations of NO biomarkers (≈15 ppb) under breath-simulated conditions and maintains performance after extensive bending cycles, paving the way for advances in breath-based diagnostic applications.
Want 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!