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electrospinning 2

EMI shielding performance 1

Ti3C2Tx MXene 1

artificial blood vessels 1

cellulose nanofiber 1

double crosslinking 1

electrochemical 1

electrolysis 1

gelatin 1

hemocompatibility 1

heterojunctions 1

lignin 1

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Flexible, ultrathin, and multifunctional polypyrrole/cellulose nanofiber composite films with outstanding

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 8,   Pages 1028-1037 doi: 10.1007/s11705-022-2251-2

Abstract: In this study, the flexible, ultrathin, and multifunctional polypyrrole/cellulose nanofiber compositeThe dense sandwich structure and strong interfacial interaction endowed polypyrrole/cellulose nanofiberInterestingly, the polypyrrole/cellulose nanofiber composite film electrodes with quaternary amine functionalizedcellulose nanofiber had the highest specific mass capacitance (392.90 F∙g–1) and specificFurther, the polypyrrole/cellulose nanofiber composite films with sandwich structure had excellent photothermal

Keywords： cellulose nanofiber     electrochemical     photothermal conversion     polypyrrole    

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Lignin-based electrospun nanofiber membrane decorated with photo-Fenton Ag@MIF-100(Fe) heterojunctions

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 930-941 doi: 10.1007/s11705-023-2309-9

Abstract: a simple electrospinning and in situ seeding method to fabricate a lignin-based electrospun nanofiber

Keywords： lignin     electrospinning     heterojunctions     photo-Fenton catalysis     wastewater remediation    

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Dual cross-linked MXene/cellulose nanofiber/nickel alginate film with improved mechanical properties

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1460-1469 doi: 10.1007/s11705-023-2335-7

Abstract: nanosheets as flexible matrices to construct strong and flexible mussel-like layered MXene/Cellulose nanofiberand metal coordination, the tensile strength, Young’s modulus, and toughness of the MXene/cellulose nanofiberConsequently, the MXene/cellulose nanofiber/nickel alginate-Ni composite film presents a considerably

Keywords： Ti3C2Tx MXene     double crosslinking     mechanical properties     EMI shielding performance    

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Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional electrocatalyst for overall water splitting

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1707-1717 doi: 10.1007/s11705-023-2308-x

Abstract: Water electrolysis technology is considered to be one of the most promising means to produce hydrogen. Herein, aiming at the problems of high overpotential and slow kinetics in water splitting, N-doped porous carbon nanofibers-coupled CoNi2S4 nanoparticles are prepared as bifunctional electrocatalyst. In the strategy, NaCl is used as the template to prepare porous carbon nanofibers with a large surface area, and sulfur vacancies are created to modulate the electronic structure of CoNi2S4. Electron spin resonance confirms the formation of abundant sulfur vacancies, which largely reduce the bandgap of CoNi2S4 from 1.68 to 0.52 eV. The narrowed bandgap is conducive to the migration of valence electrons and decreases the charge transfer resistance for electrocatalytic reaction. Moreover, the uniform distribution of CoNi2S4 nanoparticles on carbon nanofibers can prevent the aggregation and facilitate the exposure of electrochemical active sites. Therefore, the composite catalyst exhibits low overpotentials of 340 mV@100 mA·cm–2 for oxygen evolution reaction and 380 mV@100 mA·cm–2 for hydrogen evolution reaction. The assembled electrolyzer requires 1.64 V to achieve 10 mA·cm–2 for overall water-splitting with good long-term stability. The excellent performance results from the synergistic effect of porous structures, sulfur deficiency, nitrogen doping, and the well-dispersed active component.

Keywords： nanoparticle     sulfur vacancy     porous carbon nanofiber     transition metal sulfides     electrolysis    

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Hemocompatible polyurethane/gelatin-heparin nanofibrous scaffolds formed by a bi-layer electrospinning technique as potential artificial blood vessels

Heyun WANG, Yakai FENG, Marc BEHL, Andreas LENDLEIN, Haiyang ZHAO, Ruofang XIAO, Jian LU, Li ZHANG, Jintang GUO

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 392-400 doi: 10.1007/s11705-011-1202-0

Abstract: In this paper, a scaffold, which mimics the morphology and mechanical properties of a native blood vessel is reported. The scaffold was prepared by sequential bi-layer electrospinning on a rotating mandrel-type collector. The tubular scaffolds (inner diameter 4 mm, length 3 cm) are composed of a polyurethane (PU) fibrous outer-layer and a gelatin-heparin fibrous inner-layer. They were fabricated by electrospinning technology, which enables control of the composition, structure, and mechanical properties of the scaffolds. The microstructure, fiber morphology and mechanical properties of the scaffolds were examined by means of scanning electron microscopy (SEM) and tensile tests. The PU/gelatin-heparin tubular scaffolds have a porous structure. The scaffolds achieved a breaking strength (3.7±0.13 MPa) and an elongation at break (110±8%) that are appropriate for artificial blood vessels. When the scaffolds were immersed in water for 1 h, the breaking strength decreased slightly to 2.2±0.3 MPa, but the elongation at break increased to 145±21%. In platelet adhesion tests the gelatin-heparin fibrous scaffolds showed a significant suppression of platelet adhesion. Heparin was released from the scaffolds at a fairly uniform rate during the period of 2 day to 9 day. The scaffolds are expected to mimic the complex matrix structure of native arteries, and to have good biocompatibility as an artificial blood vessel owing to the heparin release.

Keywords： electrospinning     artificial blood vessels     scaffold     polyurethane     gelatin     nanofiber     hemocompatibility    

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Title Author Date Type Operation

Flexible, ultrathin, and multifunctional polypyrrole/cellulose nanofiber composite films with outstanding

Journal Article

Lignin-based electrospun nanofiber membrane decorated with photo-Fenton Ag@MIF-100(Fe) heterojunctions

Journal Article

Dual cross-linked MXene/cellulose nanofiber/nickel alginate film with improved mechanical properties

Journal Article

Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional electrocatalyst for overall water splitting

Journal Article

Hemocompatible polyurethane/gelatin-heparin nanofibrous scaffolds formed by a bi-layer electrospinning technique as potential artificial blood vessels

Heyun WANG, Yakai FENG, Marc BEHL, Andreas LENDLEIN, Haiyang ZHAO, Ruofang XIAO, Jian LU, Li ZHANG, Jintang GUO

Journal Article