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Metals
Special Issues
Catalytic Metals and Their Application
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Catalytic Metals and Their Application

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metallic Functional Materials".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 4492

Special Issue Editor

Prof. Dr. Zhijian Peng

E-Mail Website
Guest Editor
Department of Chemistry, China University of Geosciences, Beijing 100083, China
Interests: ceramics and ceramic matrix composites; metal and metal matrix composites; functional polymers and polymer-derived ceramics; electronic materials and devices; science and engineering of other materials

Special Issue Information

Dear Colleagues,

The field of catalysis science and engineering is one of the fastest moving fields in all of science and technology. Throughout history, metallic catalysts have contributed greatly to the welfare of human beings, especially in chemical synthesis. Currently, due to the pending shortage of natural resources and increasing environmental pollution, catalytic metals still play a critical role. Nowadays, catalytic metals have been developed into a large family, including transition metal catalysts, rare-earth metal catalysts, noble metal catalysts, non-noble metal catalysts, metal alloy/solution catalysts, metal-based compound/composite catalysts, metal–organic frameworks for catalysts/organometal catalysts, liquid metal catalysts, metal–support catalysts, and many other metal-related catalysts. Catalytic metals can accommodate for various forms of reaction-based photocatalysis, electrocatalysis, and conventionally chemical catalysis, in the form of gas, liquid to solid-phase reactions, and in the field of new energy, pollution degradation, and chemical engineering synthesis.

The main prerequisite for the future success of catalytic metals and their application is further improvements in existing, and the development of novel, catalytic metals, including high-performance catalytic metals with a new composition and novel microstructure, as well as their preparation methods.

This Special Issue, Catalytic Metals and Their Application, will focus on all respects related to catalytic metals and metallic catalysis (see the keywords/topics below). The papers presented in this Special Issue will represent the state of the art in the catalysis science and engineering.

Thank you for your support!

Prof. Dr. Zhijian Peng
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. 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

  • transition metal catalyst
  • rare-earth metal catalyst
  • noble metal catalyst
  • non-noble-metal catalyst
  • metal alloy/solution catalyst
  • metal-based compound/composite catalyst
  • metal–organic frameworks for catalysts/organometal catalysts
  • liquid metal catalyst
  • metal–support catalysts
  • other metal-related catalysts

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Published Papers (1 paper)

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Research

13 pages, 4669 KiB  
Article
A Facile and Surfactant-Free Electrochemical Synthesis of PtIr Nanocubes towards Ammonia Electro-Oxidation
by Yusu Tang, Dinglei Geng, Zhihao Cheng, Xin Han, Liying Han, Jinfeng Zhang, Dahai Xia and Jie Liu
Metals 2023, 13(5), 901; https://doi.org/10.3390/met13050901 - 6 May 2023
Cited by 3 | Viewed by 3998
Abstract
Noble metal Pt catalyst has been identified as excellent electrocatalysts for the ammonia oxidation reaction (AOR). However, Pt’s scarcity, expensiveness, and toxicity hinder its large-scale commercial application. Herein, we report a facile and surfactant-free electrochemical synthesis method for the production of PtIr nanocubes. [...] Read more.
Noble metal Pt catalyst has been identified as excellent electrocatalysts for the ammonia oxidation reaction (AOR). However, Pt’s scarcity, expensiveness, and toxicity hinder its large-scale commercial application. Herein, we report a facile and surfactant-free electrochemical synthesis method for the production of PtIr nanocubes. The PtIr nanocubes were in situ synthesized on carbon paper, and no organic additives were used at any stage in the synthesis of the catalyst. The formation of PtIr nanocubes was attributed to the synergy of the electro-adsorption/desorption of O-containing species and the preferential adsorption of hydrogen adatoms on PtIr(100) with a lower surface free energy. The obtained PtIr nanocubes exhibit an outstanding specific activity (SA) value of 1.34 mA cm−2, which is 1.5 and 3.8 times higher than Pt nanocubes (0.90 mA cm−2) and PtIr nanospheres (0.35 mA cm−2), respectively. The enhanced SA of the PtIr nanocubes can be ascribed to the synergic effects of multiple factors, including the (100) sites of the PtIr nanocubes, the dehydrogenation ability of Ir with respect to ammonia molecules, the electronic effects, and the clean surface of the catalyst due to the use of a “green” synthesis method. This work provides an effective strategy for the “green” synthesis of high-efficiency Pt-based metal catalysts with controllable shapes. Full article
(This article belongs to the Special Issue Catalytic Metals and Their Application)
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