Special Issue "Noble Metal Nanoparticles and Nanoclusters: Synthesis and Applications"

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

Deadline for manuscript submissions: 28 February 2021.

Special Issue Editor

Dr. Marco Martino
Website SciProfiles
Guest Editor
ProCEEd Laboratory, Department of Industrial Engineering, University of Salerno, Italy
Interests: Catalysis, coating techniques; metal surface modifications, synthesis, X-ray diffraction; XRF; Raman spectroscopy, porosimetry, nuclear magnetic resonance
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Special Issue Information

Dear Colleagues,

Noble metal-based materials are involved in many industrial applications, such as automotive, aerospace, catalytic, as well as in the corrosion field and that of sensors. Despite the high cost of these materials, their exceptional properties make them extremely attractive for a wide range of applications. Today, the synthesis of nanoparticles as well as nanoclusters is a particularly attractive topic, and the physical and chemical properties at nanometric and subnanometric scale are significantly different from those of bulk material owing to the quantum size effect.

This Special Issue is devoted to the synthesis, characterization, and application of noble and supported noble metal nanoparticles and nanoclusters. Original research papers, reviews, and short communications are welcome. Topics include new synthetic routes to noble metal nanoparticles and nanoclusters, theoretical studies, and applications in catalysis, photocatalysis, corrosion protection, water-splitting, fuel cell, coating, sensors, and related fields.

Dr. Marco Martino
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. 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 1600 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

  • nanoparticles
  • nanoclusters
  • noble metals (Au, Pt, Pd, Rh, Ru, Ir, Os, Ag)
  • corrosion protection
  • catalysis
  • photocatalysis
  • coating
  • sensors

Published Papers (1 paper)

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Review

Open AccessReview
Platinum Based Catalysts in the Water Gas Shift Reaction: Recent Advances
Metals 2020, 10(7), 866; https://doi.org/10.3390/met10070866 - 29 Jun 2020
Abstract
The water gas shift (WGS) is an equilibrium exothermic reaction, whose corresponding industrial process is normally carried out in two adiabatic stages, to overcome the thermodynamic and kinetic limitations. The high temperature stage makes use of iron/chromium-based catalysts, while the low temperature stage [...] Read more.
The water gas shift (WGS) is an equilibrium exothermic reaction, whose corresponding industrial process is normally carried out in two adiabatic stages, to overcome the thermodynamic and kinetic limitations. The high temperature stage makes use of iron/chromium-based catalysts, while the low temperature stage employs copper/zinc-based catalysts. Nevertheless, both these systems have several problems, mainly dealing with safety issues and process efficiency. Accordingly, in the last decade abundant researches have been focused on the study of alternative catalytic systems. The best performances have been obtained with noble metal-based catalysts, among which, platinum-based formulations showed a good compromise between performance and ease of preparation. These catalytic systems are extremely attractive, as they have numerous advantages, including the feasibility of intermediate temperature (250–400 °C) applications, the absence of pyrophoricity, and the high activity even at low loadings. The particle size plays a crucial role in determining their catalytic activity, enhancing the performance of the nanometric catalytic systems: the best activity and stability was reported for particle sizes < 1.7 nm. Moreover the optimal Pt loading seems to be located near 1 wt%, as well as the optimal Pt coverage was identified in 0.25 ML. Kinetics and mechanisms studies highlighted the low energy activation of Pt/Mo2C-based catalytic systems (Ea of 38 kJ·mol−1), the associative mechanism is the most encountered on the investigated studies. This review focuses on a selection of recent published articles, related to the preparation and use of unstructured platinum-based catalysts in water gas shift reaction, and is organized in five main sections: comparative studies, kinetics, reaction mechanisms, sour WGS and electrochemical promotion. Each section is divided in paragraphs, at the end of the section a summary and a summary table are provided. Full article
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