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Metals
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Advances in Nanoporous Metallic Materials (2nd Edition)
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Advances in Nanoporous Metallic Materials (2nd Edition)

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 25 July 2025 | Viewed by 3624

Special Issue Editors

Prof. Dr. Zhifeng Wang

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China
Interests: porous materials; energy storage and conversion; dealloying; metallic glass; high entropy alloy; battery; light metals
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Qibo Deng

E-Mail Website
Guest Editor
School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
Interests: strain engineering of electrocatalysis; dynamic electro-chemo-mechanical analysis; electrochemical actuation; reactivity enhancement strategies; reaction knitics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nanoporous metallic materials (Au, Pd, Cu, Sn, Bi, etc.) have been successfully applied in many fields, such as catalysis, actuation, sensor, energy storage and conversion, and surface-enhanced Raman scattering, due to their high specific surface area, unique bicontinuous structure, tunable ligament/pore size, good conductivity, etc. More and more techniques, including dealloying, templating and electrochemical synthesis, have been used to synthesize nanoporous metals. In addition, a growing number of technologies are combining (for instance, 3D printing combined with dealloying and templating combined with selective corrosion) to design and fabricate new porous structures that exhibit excellent physical and chemical properties.

This Special Issue focuses on recent advances of nanoporous metallic materials by different methods from fundamental studies to various applications. Research areas may include, but are not limited to, structural design of nanoporous metals, novel preparation methods, characterization of nanoporous structures, calculation and simulation toward nanoporous metals and different reaction processes, and applications of nanoporous metallic materials in various fields. It is our pleasure to invite you to submit a manuscript for this Special Issue. Original research papers and review articles are all welcome. We look forward to receiving your contributions.

Prof. Dr. Zhifeng Wang
Prof. Dr. Qibo Deng
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. Metals is an international peer-reviewed open access monthly 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 2600 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

  • nanoporous metal
  • dealloying
  • energy storage and conversion
  • catalysis
  • actuation
  • sensor
  • mechanical property
  • calculation and simulation
  • surface-enhanced Raman scattering

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Published Papers (2 papers)

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18 pages, 7162 KiB  
Article
Dealloying of Quasi-High Entropy Alloys: Fabrication of Porous Noble Metals/Metal Oxides
by Ziying Meng, Jun Zhou, Chunling Qin and Zhifeng Wang
Metals 2025, 15(2), 114; https://doi.org/10.3390/met15020114 - 25 Jan 2025
Viewed by 853
Abstract
High entropy alloys (HEAs) have been widely studied due to their special crystal structure, but their bulk structure and low specific surface area limit their further application in broader fields. In this work, the dealloying of precious metal Cu35Pd35Ni [...] Read more.
High entropy alloys (HEAs) have been widely studied due to their special crystal structure, but their bulk structure and low specific surface area limit their further application in broader fields. In this work, the dealloying of precious metal Cu35Pd35Ni25Ag5 quasi-HEAs is performed. Porous noble metals with micro prism array structure and porous noble metal PdO/Ag2O/NiO oxides with nano “ligament/pore” structure are obtained by constant potential dealloying and free dealloying, respectively. In this way, the porosification of quasi-HEAs and noble metal oxides is achieved. Moreover, the effects of dealloying parameters on pore morphology and phase structure of dealloyed materials are studied, and the evolution mechanisms of pore structures of different dealloying products are discussed. The work provides strategies for the preparation of porous precious metal quasi-HEAs and porous noble metal oxides by the dealloying method. These products present great potential for application as functional materials in hot fields such as catalysis and energy storage. Full article
(This article belongs to the Special Issue Advances in Nanoporous Metallic Materials (2nd Edition))
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16 pages, 2470 KiB  
Article
Inhibited Surface Diffusion in Nanoporous Multi-Principal Element Alloy Thin Films Prepared by Vacuum Thermal Dealloying
by Tibra Das Gupta and Thomas John Balk
Metals 2024, 14(3), 289; https://doi.org/10.3390/met14030289 - 29 Feb 2024
Cited by 2 | Viewed by 1995
Abstract
Nanoporous structures with 3D interconnected networks are traditionally made by dealloying a binary precursor. Certain approaches for fabricating these materials have been applied to refractory multi-principal element alloys (RMPEAs), which can be suitable candidates for high-temperature applications. In this study, nanoporous refractory multi-principal [...] Read more.
Nanoporous structures with 3D interconnected networks are traditionally made by dealloying a binary precursor. Certain approaches for fabricating these materials have been applied to refractory multi-principal element alloys (RMPEAs), which can be suitable candidates for high-temperature applications. In this study, nanoporous refractory multi-principal element alloys (np-RMPEAs) were fabricated from magnesium-based thin films (VMoNbTaMg) that had been prepared by magnetron sputtering. Vacuum thermal dealloying (VTD), which involves sublimation of a higher vapor pressure element, is a novel technique for synthesizing nanoporous refractory elements that are prone to oxidation. When VMoNbTaMg was heated under vacuum, a nanoporous structure was created by the sublimation of the highest vapor pressure element (Mg). X-ray photoelectron spectroscopy depth profiling indicated significantly less ligament oxidation during VTD as compared to traditional dealloying methods. Furthermore, np-RMPEAs exhibited outstanding stability against coarsening, retaining smaller ligaments (~25 nm) at elevated temperature (700 °C) for a prolonged period (48 h). Full article
(This article belongs to the Special Issue Advances in Nanoporous Metallic Materials (2nd Edition))
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