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Special Issue "Sol-Gel Synthesis of Materials"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: 31 December 2019

Special Issue Editor

Guest Editor
Prof. Aivaras Kareiva

Institute of Chemistry, Vilnius University, Vilnius, Naugarduko Street 24, LT-03225 Vilnius, Lithuania
Website | E-Mail
Interests: inorganic; solid state; materials and analytical chemistry; sol-gel synthesis; analytical characterization of multicomponent metal oxide systems

Special Issue Information

Dear Colleagues,

Over the last few decades, the sol-gel techniques have been used to prepare a variety of mixed-metal oxides, nanomaterials and nanoscale architectures, nanoporous oxides, organic-inorganic hybrids. These materials now represent one of the largest manufacturing sectors in the world. One challenge for the high end of the market is the development of alternative synthesis technologies that are not just “greener” but provide environmentally benign processes. It is well known also that physical properties of crystalline materials are strongly dependent on the phase purity, grain size and grain size distribution. Therefore, it is also very important to develop simple, reliable and cost-effective synthesis method for the preparation of products with controllable phase purity and surface morphology. Among different synthesis methods, sol–gel processing route is most convenient method because of its simplicity, good mixing of starting materials, relatively low reaction temperature and easy control of chemical composition of the end product. Sol-gel synthesis is utilized to fabricate advanced materials in a wide variety of forms: ultrafine powders, thin film coatings, fibbers, porous or dense materials. The scope of this Special Issue of Materials is focused on the development of sol-gel synthesis technique, and application of sol-gel processing for the fabrication of multifunctional materials, which are important in all industrial areas. The field of the research in the evolution of inorganic networks through the formation of a colloidal suspension (sol) and gelation of the sol to form three-dimensional, continuous network in a liquid phase (gel) is very much appreciated.

Prof. Aivaras Kareiva
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sol-gel synthesis
  • aqueous processing
  • metal alkoxides route
  • mixed-metal oxides
  • nanomaterials
  • organic-inorganic hybrids
  • functional materials
  • ultrafine powders
  • thin/thick films
  • fibbers
  • porous and dense materials

Published Papers (2 papers)

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Research

Open AccessArticle Undoped and Eu3+ Doped Magnesium-Aluminium Layered Double Hydroxides: Peculiarities of Intercalation of Organic Anions and Investigation of Luminescence Properties
Materials 2019, 12(5), 736; https://doi.org/10.3390/ma12050736
Received: 11 January 2019 / Revised: 6 February 2019 / Accepted: 28 February 2019 / Published: 4 March 2019
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Abstract
The Mg3/Al and Mg3/Al0.99Eu0.01 layered double hydroxides (LDHs) were fabricated using a sol-gel chemistry approach and intercalated with different anions through ion exchange procedure. The influence of the origin of organic anion (oxalate, laurate, malonate, succinate, [...] Read more.
The Mg3/Al and Mg3/Al0.99Eu0.01 layered double hydroxides (LDHs) were fabricated using a sol-gel chemistry approach and intercalated with different anions through ion exchange procedure. The influence of the origin of organic anion (oxalate, laurate, malonate, succinate, tartrate, benzoate, 1,3,5-benzentricarboxylate (BTC), 4-methylbenzoate (MB), 4-dimethylaminobenzoate (DMB) and 4-biphenylacetonate (BPhAc)) on the evolution of the chemical composition of the inorganic-organic LDHs system has been investigated. The obtained results indicated that the type and arrangement of organic guests between layers of the LDHs influence Eu3+ luminescence in the synthesized different hybrid inorganic–organic matrixes. For the characterization of synthesis products X-ray diffraction (XRD) analysis, infrared (FTIR) spectroscopy, fluorescence spectroscopy (FLS), and scanning electron microscopy (SEM), were used. Full article
(This article belongs to the Special Issue Sol-Gel Synthesis of Materials)
Figures

Figure 1

Open AccessArticle Synthesis and Characterization of TiO2-ZnO-MgO Mixed Oxide and Their Antibacterial Activity
Materials 2019, 12(5), 698; https://doi.org/10.3390/ma12050698
Received: 2 February 2019 / Revised: 21 February 2019 / Accepted: 21 February 2019 / Published: 27 February 2019
PDF Full-text (4238 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
TiO2-ZnO-MgO mixed oxide nanomaterials (MONs) were synthetized via the sol-gel method and characterized by scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), nitrogen physisorption analysis, X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), Fourier [...] Read more.
TiO2-ZnO-MgO mixed oxide nanomaterials (MONs) were synthetized via the sol-gel method and characterized by scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), nitrogen physisorption analysis, X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), Fourier transform infrared spectroscopy (FTIR), and color (Luminosity (L), a, b, Chrome, hue) parameters. Furthermore, the antimicrobial activity of the MONs was tested against Escherichia coli (EC), Salmonella paratyphi (SP), Staphylococcus aureus (SA), and Listeria monocytogenes (LM). The MONs presented a semi globular-ovoid shape of ≤100 nm. Samples were classified as mesoporous materials and preserved in the TiO2 anatase phase, with slight changes in the color parameters of the MONs in comparison with pure TiO2. The MONs exhibited antimicrobial activity, and their effect on the tested bacteria was in the following order: EC > SP > SA > LM. Therefore, MONs could be used as antimicrobial agents for industrial applications. Full article
(This article belongs to the Special Issue Sol-Gel Synthesis of Materials)
Figures

Graphical abstract

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Conversion of one-dimensional Ni/NiO core-shell nanowires to NiO nanotubes
Authors: Zibin Dong, Yi Luo, Weifeng Zhang, Haizhong Guo and Wenfeng Xiang
Abstract: Conversion of one-dimensional Ni/NiO nanowires to polycrystalline NiO nanotubes has been performed by a heat-treatment method. The microstructure and surface composition of the Ni/NiO nanowires and NiO nanotubes during the conversion were investigated employing a combination of x-ray diffraction, Raman spectra, scanning electron microscopy, transmission electron microscopy, photoemission spectroscopy, and x-ray photoemission. The results show that the Ni nanowires convert to Ni/NiO core-shell nanowires with increasing the annealing temperature and then completely convert to NiO nanotubes over 600 °C. The NiO grain size and NiO/Ni ratio increase, and the surface roughness of the Ni/NiO nanowires gradually decreases with the annealing temperature. Our findings demonstrate that the conversional evolution of the Ni-based nanostructures may provide useful information for the preparation of the one-dimensional Ni-based nanostructures with different microstructure and properties to meet their various applications.

 

 

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