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Coatings
Special Issues
Recent Advances in Nanoporous and Nanostructured Metals
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Recent Advances in Nanoporous and Nanostructured Metals

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Corrosion, Wear and Erosion".

Deadline for manuscript submissions: closed (10 May 2024) | Viewed by 2851

Special Issue Editor

Dr. Federico Scaglione

E-Mail Website
Guest Editor
Dipartimento di Chimica and Centro Interdipartimentale NIS (Nanostructured Surfaces and Interfaces), Università degli Studi di Torino, Via P. Giuria 7, 10125 Turin, Italy
Interests: metals and alloys; metallic glasses; nanoporous gold; nanostructured metals; de-alloying; corrosion; electrochemistry; electrocatalysis; water splitting; surface enhanced Raman scattering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nanoporous and nanostructrured metals have sparked increasing interest thanks to the versatility of morphology and the intriguing properties that can be employed in a wide range of applications. Characterized by a high specific surface area and possibility of tuning the shape and size of the nanostructured metals as a function of the synthesis parameters, they have been applied with success as catalysts, electrocatalysts, SERS substrates, sensors, and materials for energy and sieves.

This Special Issue is devoted to recent advances in the synthesis of nanoporous and nanostructured metals prepared by different techniques, including but not limited to dealloying and electrodeposition means. Experimental works focused on applications of nanoporous and nanostructured metals are welcome in this Special Issue.

In general, the topics of interest include the following aspects:

  • Advanced synthesis and characterization of nanoporous metals, nanowires, nanoparticles, nanotubes, and all possible unconventional metal nano-shapes;
  • Exploration of fields of catalysis, electrocatalysis, SERS, sensing, actuation, energy, sieves, and magnetic and other potential applications;
  • Related effects of synthesis conditions on the final structure and properties of nanoporous and nanostructured metals.

Dr. Federico Scaglione
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 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. Coatings 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 and nanostructured metals
  • dealloying
  • electrodeposition
  • SERS and sensors
  • electrocatalysis

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Published Papers (1 paper)

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Research

15 pages, 3670 KiB  
Article
Cost-Effective Nanoporous Gold Obtained by Dealloying Metastable Precursor, Au33Fe67, Reveals Excellent Methanol Electro-Oxidation Performance
by Deepti Raj, Federico Scaglione, Gianluca Fiore and Paola Rizzi
Coatings 2022, 12(6), 831; https://doi.org/10.3390/coatings12060831 - 14 Jun 2022
Cited by 5 | Viewed by 2092
Abstract
In this study, we report nanoporous gold (NPG) as an economic, efficient, and stable alternative electrocatalyst for methanol electro-oxidation. The said sample was successfully prepared from an Fe-rich metastable Au33Fe67 supersaturated solid solution acting as the precursor, which was formed [...] Read more.
In this study, we report nanoporous gold (NPG) as an economic, efficient, and stable alternative electrocatalyst for methanol electro-oxidation. The said sample was successfully prepared from an Fe-rich metastable Au33Fe67 supersaturated solid solution acting as the precursor, which was formed into ribbons by the phenomenon of rapid solidification using melt-spinning technique. The as-quenched ribbon was then chemically dealloyed in 1 M HCl at 70 °C for different durations of time. A homogeneous, free-standing, and mechanically stable NPG sample was obtained with tunable ligament shape and size. The morphology and composition were characterized by using SEM with EDS, while the structure by XRD. The sample was examined as an electrocatalyst for methanol electro-oxidation profiting off its large surface area; cyclic voltammetry (CV) was the technique employed for electrochemical studies. In a basic solution of methanol and KOH, the sample displays a low peak potential of 0.47 V vs. Ag/AgCl for methanol electro-oxidation with a high peak current density of 0.43 mA/cm2. In addition, it demonstrates outstanding stability and high poisoning tolerance. It is noteworthy that the fabrication process of the NPG sample from start to end was intentionally opted to be sustainable, cost-effective, rapid, and feasible. The usage of critical raw materials was avoided. As a whole, the properties and results put forth by the NPG sample make it an inexpensive, sustainable, and excellent alternative as an electrocatalyst for methanol electro-oxidation. Full article
(This article belongs to the Special Issue Recent Advances in Nanoporous and Nanostructured Metals)
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