Advances in Nanocomposite Materials

A special issue of Condensed Matter (ISSN 2410-3896). This special issue belongs to the section "Physics of Materials".

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 12105

Special Issue Editor


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Guest Editor
Department of Engineering Physics, Georgian Technical University, 77 Kostava Ave., Tbilisi 0160, Georgia
Interests: electronic and geometric structures of materials and nanosystems; electron transport in solids; nanomaterials and nanotechnology; isotopic effects; materials for radiation protection; boron, its compounds and their composites

Special Issue Information

Nanocomposites—multiphase materials where phases are of nano-size or their structures have nano-scale repeat distances—are of great interest because of their useful mechanical, electrical, thermal, optical, electrochemical, catalytic, etc. properties, which are markedly different from those of the components. In a broad sense, the class of nanocomposite materials includes not only combinations of ceramic-, metal- or polymer-matrix solids added with different nanopowder phases, but also porous, colloidal, sol–gel, and copolymer forms of condensed matter.

In recent years, magnetic nanocomposites useful in medicine for precise drug delivery and release have been designed, as well as heat-resistant nanocomposites to be utilized in high-temperature environments, superhard nanocermets with improved cracking resistance for cutting tools, and many other nanocomposite materials.

This Special Issue aims to provide an exchange platform for the latest achievements both in experimental and theoretical studies in the intensively developing field of nanocomposites. Its areas of interest include but are not limited to:

– Physical mechanism of formation of nanocomposite materials;
– Nanocomposites’ morphology and components’ real atomic structure;
– Nanocomposites’ electronic structure;
– Interface phenomena in nanocomposites;
– Physical (mechanical, thermal, electrical, magnetic, optical) properties of nanocomposites;
– Interaction between nanocomposite materials and radiation of various types;
– Chemical activity of nanocomposites;
– Applications of nanocomposite materials in techniques, industrial technologies, medicine, environmental protection, etc.

Prof. Dr. Levan Chkhartishvili
Guest Editor

Manuscript Submission Information

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Published Papers (5 papers)

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Research

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11 pages, 1796 KiB  
Article
Analysis of Structural, Optical, and Magnetic Properties of (Fe,Co) Co-Doped ZnO Nanoparticles Synthesized under UV Light
by Nawal Madkhali
Condens. Matter 2022, 7(4), 63; https://doi.org/10.3390/condmat7040063 - 8 Nov 2022
Cited by 4 | Viewed by 1852
Abstract
In this report, we discuss the preparation of undoped and (Fe,Co) co-doped ZnO nanocomposites via an ultrasonicated probe, which were both under UV irradiation for 12 h and annealed at 400 °C for four hours in ambient air. Here, we investigated the different [...] Read more.
In this report, we discuss the preparation of undoped and (Fe,Co) co-doped ZnO nanocomposites via an ultrasonicated probe, which were both under UV irradiation for 12 h and annealed at 400 °C for four hours in ambient air. Here, we investigated the different concentration of dopant transition metals (ZnO-Fe1-x-Cox) (x = 0.03, 0.05, and 0.07). X-ray diffraction (XRD) analyses confirmed the nanophase, crystallinity, good uniformity, and around 28 nm core sizes of all of the (ZnO-Fe1-x-Cox) as-synthesized composites with different rates. The optical properties of ZnO doped with a high percent of Fe nanoparticles displayed an increase in absorption in the UV region and a slight decrease in the energy band gap to 3.13 eV. Magnetic measurements revealed that doping enhanced the ferromagnetism of ZnO. Recent studies which aimed to improve the optical and magnetic properties of metal oxides, the most important of which being zinc oxide, have allowed their applications to diversify and multiply in the medical, industrial, and electronic fields. Full article
(This article belongs to the Special Issue Advances in Nanocomposite Materials)
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14 pages, 2436 KiB  
Article
Nanocomposites Based on Cerium, Lanthanum, and Titanium Oxides Doped with Silver for Biomedical Application
by Olena Mykolaivna Lavrynenko, Maksym Mykytovych Zahornyi, Valeriia Volodymyrivna Vember, Olesia Yuriivna Pavlenko, Tatyana Fedorovna Lobunets, Olexandr Fedorovych Kolomys, Olga Yurievna Povnitsa, Luibov Oleksievna Artiukh, Krystyna Sergiivna Naumenko, Svitlana Dmitrievna Zahorodnia and Inna Leontievna Garmasheva
Condens. Matter 2022, 7(3), 45; https://doi.org/10.3390/condmat7030045 - 19 Jul 2022
Cited by 11 | Viewed by 2606
Abstract
Nanosized composites CeO2–Ag, La2O3–Ag, and TiO2–Ag are a class of nanomaterials suitable for photocatalysis, optical devices, and photoelectrochemical elements. Further, nanocomposites with several wt.% of silver can be used as creating materials for pathogenic virus [...] Read more.
Nanosized composites CeO2–Ag, La2O3–Ag, and TiO2–Ag are a class of nanomaterials suitable for photocatalysis, optical devices, and photoelectrochemical elements. Further, nanocomposites with several wt.% of silver can be used as creating materials for pathogenic virus inactivation with pandemic-neutralizing potential. Thus, CeO2–Ag, La2O3–Ag, and TiO2–Ag nanocomposites are prospective materials due to their optical and biological activity. In the present work, CeO2–Ag, La2O3–Ag, and TiO2–Ag nanocomposites were synthesized by the co-precipitation method. The morphological and optical properties and the structure of the prepared nanocomposites were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM) with EDX, and nitrogen adsorption-desorption based on BET, Raman spectroscopy, and photoluminescence (PL). Both oxide matrixes corresponded to the cubic crystal lattice with the inclusion of argentum into the crystal lattice of oxides at relative low c(Ag) and reduction of silver on particle surface at 5 wt.% Ag and greater. The CeO2, TiO2, and La2O3 with a concentration of 4 wt.% Ag inhibited the growth processes of prokaryotic cells of E. coli, Bacillus sp., and S. aureus compared to pure oxides. Influenza A virus and herpes completely suppressed reproduction by nanocomposites of CeO2–Ag (2, 5 wt.%) and La2O3–Ag (2, 5 wt.%) action. Full article
(This article belongs to the Special Issue Advances in Nanocomposite Materials)
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11 pages, 2556 KiB  
Article
Effect of Metallic and Non-Metallic Additives on the Synthesis of Fullerenes in Thermal Plasma
by Anna Mária Keszler, Éva Kováts, Eszter Bódis, Zoltán Károly and János Szépvölgyi
Condens. Matter 2022, 7(3), 44; https://doi.org/10.3390/condmat7030044 - 30 Jun 2022
Cited by 1 | Viewed by 1773
Abstract
The effect of metallic (Fe, Cu, Co, Ni, Ti) and non-metallic additives (Si, B) on the formation of fullerenes from graphite powders was studied in radiofrequency (RF) thermal plasma. The main component of the synthesized fullerene mixtures was C60, but higher [...] Read more.
The effect of metallic (Fe, Cu, Co, Ni, Ti) and non-metallic additives (Si, B) on the formation of fullerenes from graphite powders was studied in radiofrequency (RF) thermal plasma. The main component of the synthesized fullerene mixtures was C60, but higher fullerenes (C70, C82, and C84) could be detected as well. Fe and Cu additives increased the fullerene content in the soot. In contrast, the fullerene formation decreased in the presence of Ti, Si, and B as compared to the synthesis without additives. However, Ti and B addition enhanced the formation of higher fullerenes. We provide experimental evidence that decreasing the reactor pressure results in a lower yield of fullerene production, in accordance with thermodynamic calculations and numerical simulations published earlier. In the presence of titanium, a significant quantity of TiC was also formed as a by-product. The fullerene mixture synthesized with boron additives showed higher stability during storage in ambient conditions as compared to other samples. Full article
(This article belongs to the Special Issue Advances in Nanocomposite Materials)
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10 pages, 4318 KiB  
Article
Properties of Composite Powder Based on Boron Nitride Prepared under Concentrated Light
by Lina Sartinska, Anatoliy Kasumov, Alexander Koval and Gennadiy Frolov
Condens. Matter 2022, 7(2), 42; https://doi.org/10.3390/condmat7020042 - 11 Jun 2022
Viewed by 1996
Abstract
The results of direct synthesis of composite powder based on boron nitride (BN) are considered. Concentrated light heating of the initial boron powder was carried out in a xenon high-flux optical furnace in a nitrogen flow. Formation of particles of the desired sizes [...] Read more.
The results of direct synthesis of composite powder based on boron nitride (BN) are considered. Concentrated light heating of the initial boron powder was carried out in a xenon high-flux optical furnace in a nitrogen flow. Formation of particles of the desired sizes and architecture highly dependent of the synthesis conditions. The flow of nitrogen separates the particles depending on their architecture and size. An increase in the distance from the reaction zone leads to the formation of powder with a wider bandgap, increases the amount of amorphous phase, and decreases the amount of oxide in the collected composite powder. However, the close distance to the reaction zone and high temperatures provide a denser packing of the structure on the particle surface and the disappearance of the BN transition phases. Incorporation of the nickel sulfate hexahydrate to initial boron contributes to the formation of graphene-like structures. Full article
(This article belongs to the Special Issue Advances in Nanocomposite Materials)
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Review

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54 pages, 14108 KiB  
Review
Advanced Boron Carbide Matrix Nanocomposites Obtained from Liquid-Charge: Focused Review
by Levan Chkhartishvili, Archil Mikeladze, Otar Tsagareishvili, Vakhtang Kvatchadze, Valery Tavkhelidze, Zviad Mestvirishvili, Dimitri Driaev, Natia Barbakadze, Lili Nadaraia, Ketevan Sarajishvili, Irma Jinikashvili, Manana Buzariashvili and Roin Chedia
Condens. Matter 2023, 8(2), 37; https://doi.org/10.3390/condmat8020037 - 20 Apr 2023
Cited by 5 | Viewed by 2731
Abstract
Boron carbide is known as a hard material; it possesses a unique complex of physical-mechanical properties and has diverse applications in industries. An expansion of its field of uses stems from the creation of boron carbide matrix nanocomposite materials. In view of this [...] Read more.
Boron carbide is known as a hard material; it possesses a unique complex of physical-mechanical properties and has diverse applications in industries. An expansion of its field of uses stems from the creation of boron carbide matrix nanocomposite materials. In view of this perspective, an effective liquid-charge synthesizing method for their components in nanopowder form has been proposed. This paper provides a focused review on advanced boron carbide matrix ceramic and metal-ceramic nanocomposites recently obtained by the authors using this method. Particular attention is paid to the characterization of boron carbide nanocomposites, including some ceramic borides, metallic alloys and also other metal-ceramic composites. Full article
(This article belongs to the Special Issue Advances in Nanocomposite Materials)
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