Organic and Inorganic Nanofibers

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (31 October 2020) | Viewed by 9793

Special Issue Editor


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Guest Editor
Carbon Composite Energy Nanomaterials Research Center, Woosuk University, 443 Samnye-ro, Samnye-eup 55338, Wanju, Republic of Korea
Interests: polymers; carbon nanofibers; biomedicals; supercapacitors; metal-organic frameworks (MOFs); nanocomposites

Special Issue Information

Dear Colleagues,

To date, several approaches, such as phase separation, self-assembly, drawing, template synthesis, and electrospinning, have been put forward for the fabrication of one-dimensional (1D) fibrous structures from various polymers. A wide range of polymers have been electrospun to prepare nanofibers. So far, more than 200 polymers have been reported to have been made into nanofiber structures with the electrospinning technique. Among these various electrospun nanofibers possessing high specific surface area, porosity, and flexibility, organic and inorganic hybrid nanofibers are widely used materials for environmental remediation and high-tech applications such as catalyst, electronic and sensing devices, filtration, energy, scaffold, and wound dressing.

This Special Issue on “Organic and Inorganic Nanofibers” will attempt to cover the most recent advances in nanofibers, concerning not only the synthesis and characterization but especially reports of their functional and smart properties to be applied in working devices. Nanofibers have emerged widely, from organic and inorganic syntheses to commercial applications, and nanofiber technology will mature and move beyond its current realization and applications.

Prof. Dr. Mira Park
Guest Editor

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Keywords

  • Advanced synthesis
  • Green technology
  • Water/air purification and filtration
  • Photocatalyst
  • Batteries and fuel cells
  • Supercapacitors
  • Hydrogen storage and generation
  • Sensors
  • Biomaterials and devices

Published Papers (3 papers)

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Research

14 pages, 7922 KiB  
Article
Towards the Enhancement in Photocatalytic Performance of Ag3PO4 Nanoparticles through Sulfate Doping and Anchoring on Electrospun Nanofibers
by Gopal Panthi, Kapil Raj Gyawali and Mira Park
Nanomaterials 2020, 10(5), 929; https://doi.org/10.3390/nano10050929 - 11 May 2020
Cited by 15 | Viewed by 3623
Abstract
Present work reports the enhancement in photocatalytic performance of Ag3PO4 nanoparticles through sulfate doping and anchoring on Polyacrylonitrile (PAN)-electrospun nanofibers (SO42−-Ag3PO4/PAN-electrospun nanofibers) via electrospinning followed by ion-exchange reaction. Morphology, structure, chemical composition, and [...] Read more.
Present work reports the enhancement in photocatalytic performance of Ag3PO4 nanoparticles through sulfate doping and anchoring on Polyacrylonitrile (PAN)-electrospun nanofibers (SO42−-Ag3PO4/PAN-electrospun nanofibers) via electrospinning followed by ion-exchange reaction. Morphology, structure, chemical composition, and optical properties of the prepared sample were characterized using XRD, FESEM, FTIR, XPS, and DRS. The anchoring of SO42−-Ag3PO4 nanoparticles on the surface of PAN-electrospun nanofibers was evidenced by the change in color of the PAN nanofibers mat from white to yellow after ion-exchange reaction. FESEM analysis revealed the existence of numerous SO42−-Ag3PO4 nanoparticles on the surface of PAN nanofibers. Photocatalytic activity and stability of the prepared sample was tested for the degradation of Methylene blue (MB) and Rhodamine B (RhB) dyes under visible light irradiation for three continuous cycles. Experimental results showed enhanced photodegradation activity of SO42−-Ag3PO4/PAN-electrospun nanofibers compared to that of sulfate undoped sample (Ag3PO4/PAN-electrospun nanofibers). Doping of SO42− into Ag3PO4 crystal lattice could increase the photogenerated electron–hole separation capability, and PAN nanofibers served as support for nanoparticles to prevent from agglomeration. Full article
(This article belongs to the Special Issue Organic and Inorganic Nanofibers)
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18 pages, 4281 KiB  
Article
Electrospun Fibre Webs Templated Synthesis of Mineral Scaffolds Based on Calcium Phosphates and Barium Titanate
by Cristina Busuioc, Elena Olaret, Izabela-Cristina Stancu, Adrian-Ionut Nicoara and Sorin-Ion Jinga
Nanomaterials 2020, 10(4), 772; https://doi.org/10.3390/nano10040772 - 16 Apr 2020
Cited by 9 | Viewed by 2935
Abstract
The current work focuses on the development of mineral scaffolds with complex composition and controlled morphology by using a polymeric template in the form of nonwoven fibre webs fabricated through electrospinning. By a cross-linking process, gelatine fibres stable in aqueous solutions were achieved, [...] Read more.
The current work focuses on the development of mineral scaffolds with complex composition and controlled morphology by using a polymeric template in the form of nonwoven fibre webs fabricated through electrospinning. By a cross-linking process, gelatine fibres stable in aqueous solutions were achieved, these being further subjected to a loading step with two types of mineral phases: calcium phosphates deposited by chemical reaction and barium titanate nanoparticles as decoration on the previously achieved structures. Thus, hybrid materials were obtained and subsequently processed in terms of freeze-drying and heat treating with the purpose of burning the template and consolidating the mineral part as potential bone implants with improved biological response by external stimulation. The results confirmed the tunable morphology, as well as the considerable applicability of both as-prepared and final samples for the development of medical devices, which encourages the continuation of research in the direction of assessing the synergistic contribution of barium titanate domains polarisation/magnetisation by external applied fields. Full article
(This article belongs to the Special Issue Organic and Inorganic Nanofibers)
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10 pages, 3393 KiB  
Article
Tuning Magnetic Entropy Change and Relative Cooling Power in La0.7Ca0.23Sr0.07MnO3 Electrospun Nanofibers
by Luis Andrés Burrola Gándara, Lizeth Vázquez Zubiate, Diana M. Carrillo Flores, José T. Elizalde Galindo, Carlos Ornelas and Manuel Ramos
Nanomaterials 2020, 10(3), 435; https://doi.org/10.3390/nano10030435 - 29 Feb 2020
Cited by 7 | Viewed by 2682
Abstract
We present experimental evidence about the magnetocaloric tuning effect in one-dimensional nanostructure fibers mixed-valence manganite as synthesized by electrospinning techniques and under heat treatments of 973, 1073 and 1173 K. The stoichiometry obtained is La0.7Ca0.23Sr0.07MnO3 and [...] Read more.
We present experimental evidence about the magnetocaloric tuning effect in one-dimensional nanostructure fibers mixed-valence manganite as synthesized by electrospinning techniques and under heat treatments of 973, 1073 and 1173 K. The stoichiometry obtained is La0.7Ca0.23Sr0.07MnO3 and Rietveld refinement indicates a single-phase with an orthorhombic (Pnma) crystal structure. Scanning and transmission electron microscopy observations indicate coalescence in granular colonies of La0.7Ca0.23Sr0.07MnO3 nanoparticles to conform nanofibers. Magnetic entropy change is tuned due to heat treatments at 1173 K with maximum values of 1, 1.82 and 2.51 J/kgK for applied external magnetic fields of μ0H = 1, 2 and 3T, respectively, with a maximum magnetic entropy difference at a Curie temperature of 293 K (furthermore, second-order magnetic phase transition was observed). Additionally, for a magnetic field, ~μ0H = 3 T values of 49, 95 and 143 J/kg for 973, 1073 and 1173 K heat-treated samples were obtained. Full article
(This article belongs to the Special Issue Organic and Inorganic Nanofibers)
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