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Research on Alloy Materials Microstructure and Their Functionalization

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: closed (30 June 2025) | Viewed by 227

Special Issue Editors


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Guest Editor
Graduate School of Engineering, Osaka University, Suita, Japan
Interests: additive manufacturing; metals; microstructure; texture; mechanical property; bio-ceramics; coatings; antibacterial property; cytotoxicity
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Guest Editor
Faculty of Mechanical Engineering, Istanbul Technical University, Istanbul, Türkiye
Interests: plasma synthesis of nano/micro particles; multifunctional nanoparticles for cancer diagnosis and treatment; thermal and non-thermal plasmas; piezo materials for smart structures; ultrasonics; 3D manufacturing of ceramics; biomaterials; solution based nano particle synthesis; spray pyrolysis

Special Issue Information

Dear Colleagues,

We are pleased to announce a Special Issue focusing on innovative research in alloy materials, emphasizing the relationship between microstructure, production methods, and functional properties. This issue invites contributions showcasing novel alloy designs with unique microstructures and/or enhanced functionalities. Submissions are encouraged across a wide spectrum of materials, including metals, ceramics, and composites, produced through advanced techniques such as thermal processes (e.g., additive manufacturing) and chemical processes (e.g., sol–gel methods).

Topics may include biofunctional materials, magnetic alloys, and nanoparticles for therapeutic applications like hyperthermia, among other areas. We welcome studies spanning experimental, theoretical, and computational approaches to promote interdisciplinary advancements in material design and functionalization.

Dr. Ozkan Gokcekaya
Prof. Celaletdin Ergun
Guest Editors

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 submissions that pass pre-check are 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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • alloy design
  • microstructure
  • production methods
  • additive manufacturing
  • sol–gel process
  • biofunctional materials
  • magnetic properties
  • nanoparticles
  • ceramics
  • composites

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Published Papers (1 paper)

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Research

24 pages, 3701 KiB  
Article
Multifunctional REE Selective Hybrid Membranes Based on Ion-Imprinted Polymers and Modified Multiwalled Carbon Nanotubes: A Physicochemical Characterization
by Aleksandra Rybak, Aurelia Rybak, Sławomir Boncel, Anna Kolanowska, Waldemar Kaszuwara, Mariusz Nyc, Rafał Molak, Jakub Jaroszewicz and Spas D. Kolev
Int. J. Mol. Sci. 2025, 26(15), 7136; https://doi.org/10.3390/ijms26157136 - 24 Jul 2025
Abstract
A novel type of multifunctional hybrid membranes combining modified chitosan, functionalized multi-walled carbon nanotubes (MWCNTs), and rare earth element ion-imprinted polymers (REEIIPs) were designed and characterized. The synthesized materials were characterized by thermogravimetric analysis (TGA), scanning electron microscopy (SEM), vibrating sample magnetometry (VSM), [...] Read more.
A novel type of multifunctional hybrid membranes combining modified chitosan, functionalized multi-walled carbon nanotubes (MWCNTs), and rare earth element ion-imprinted polymers (REEIIPs) were designed and characterized. The synthesized materials were characterized by thermogravimetric analysis (TGA), scanning electron microscopy (SEM), vibrating sample magnetometry (VSM), X-ray diffraction (XRD), X-ray micro-tomography, and Fourier transform infrared spectroscopy (FTIR). The hybrid membranes were also studied in terms of their mechanical and rheological properties. The key element of the proper preparation of hybrid membranes using the casting method in an external magnetic field was to synthesize membrane components with appropriate magnetic properties. It was found that they showed tunable weak ferromagnetic properties, and the increase in modified nanotube addition caused the rise in the membrane’s saturation magnetization, which for Nd-selective hybrid membranes reached 0.44 emu/g. Also, the increase in thermooxidative stability was noted after introducing functionalized nanotubes into polymer matrices, which, in the case of Gd-selective membranes, were stable even up to 730 °C. The rise in the modified MWCNT addition and selection of appropriate REE ion-imprinted polymers improved mechanical (Rm and E values increase even twice) and rheological parameters (almost double growth of E′ and E″ values) of the tested membranes. Synthesized hybrid membranes showed a high rejection of matrix components and an increase in retention ratio with rising MWCNT-REEIIP addition, ultimately reaching 94.35%, 92.12%, and 90.11% for Nd, Pr, and Gd, respectively. The performed analysis confirmed homogeneous dispersion, phase compatibility, network integration, formation of a complex 3D microstructure, and improved operational stability of created hybrid membranes, which is significant for their future applications in Nd, Pr, and Gd recovery from coal fly ash extracts. Full article
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