Exploring the Mechanisms and Kinetics of Electrocatalytic Reactions

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalytic Reaction Engineering".

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 364

Special Issue Editors


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Guest Editor
Separation and Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium
Interests: electrochemistry; nanoparticle synthesis; metal recovery and valorization; gas-diffusion electrochemistry; microbial electrochemistry

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Guest Editor
Vlaamse Instelling voor Technologisch Onderzoek, Mol, Belgium
Interests: electrochemistry; gas-diffusion electrodes; electrocatalysis; CO2 reduction; electrosynthesis; metal recovery

Special Issue Information

Dear Colleagues,

We are thrilled to announce an upcoming Special Issue dedicated to electrochemical research. This Special Issue will explore the intricacies of electrocatalytic reactions, shedding light on their mechanisms and kinetics.

We welcome submissions that delve into the recent advances, challenges, new methods, and industrial potential of electrochemical reactions wherein the reaction rate defined by optimal electrocataysts pushes the boundaries to achieve efficiency, sustainability, and innovation.

The Special Issue’s focus will be on all types of electrocatalysts that convert inorganic substrates into industrially relevant products. Thus, submissions regarding O2 reduction, CO2 reduction, N2 reduction, H2 oxidation, precipitation, and crystallization reactions of metal ions and metal salts are appreciated. The use of electrocatalysts in gas diffusion electrodes is encouraged.

Works should examine the unique aspects of catalysts in driving electrochemical processes, from the fundamentals to the recent breakthroughs, elucidating their versatility and potency. Alternatively, submitted works can unveil the sequences of reaction steps and pathways that underpin electrochemical processes from reactants to products.

We encourage delving into the rates of electrocatalytic reactions and uncovering the factors that govern how quickly or slowly reactions proceed and how these insights can be leveraged for optimization. Insights into the techno-economical implications (positive or negative) and sustainable viability (i.e., recycling, circularity, substitution) are a plus.

Submissions that discuss cutting-edge techniques and methodologies employed to refine, perfect, and monitor electrochemical reactions are also welcome, as are submissions that use in situ and in-operando methods, as well as high-throughput approaches, such as those provided by scanning electrochemical cell microscopy (SECCM) and related techniques. 

All submissions should address key considerations regarding the industrial implementation of the electrocatalysts investigated.

Join us in this enlightening voyage through the vibrant landscape of electrocatalysis. Whether you are a seasoned researcher, an industry professional, or an enthusiastic learner, this Special Issue promises to be a source of knowledge and inspiration for all.

Dr. Xochitl Dominguez-Benetton
Dr. Luis Fernando Leon-Fernandez
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. Catalysts 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 2700 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

  • electrocatalysis
  • inorganic electrocatalysis
  • electrochemical mechanisms
  • electrochemical kinetics
  • electrochemical reactions
  • reaction development and optimization

Published Papers (1 paper)

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Research

21 pages, 2207 KiB  
Article
Study of Oxygen Reduction Reaction on Polycrystalline Rhodium in Acidic and Alkaline Media
by Jelena Golubović, Miroslava Varničić and Svetlana Štrbac
Catalysts 2024, 14(5), 327; https://doi.org/10.3390/catal14050327 - 16 May 2024
Viewed by 191
Abstract
This study examines the kinetics and mechanism of the oxygen reduction reaction (ORR) on a polycrystalline rhodium electrode (Rh(poly)) in acidic and alkaline media, using rotating disc electrode measurements. This study found that the ORR activity of the Rh(poly) electrode decreases in the [...] Read more.
This study examines the kinetics and mechanism of the oxygen reduction reaction (ORR) on a polycrystalline rhodium electrode (Rh(poly)) in acidic and alkaline media, using rotating disc electrode measurements. This study found that the ORR activity of the Rh(poly) electrode decreases in the order of 0.1 M NaOH > 0.1 M HClO4 > 0.05 M H2SO4 concerning the half-wave potentials. The Tafel slopes for ORR on Rh(poly) in the cathodic direction are 60 and 120 mV dec−1 at low and high overpotentials, respectively, in perchloric acid and alkaline solutions. However, strongly adsorbed sulfate anions hinder the ORR on Rh(poly) in sulfuric acid, leading to higher Tafel slopes. The highest ORR activity of Rh(poly) in an alkaline media suggests the promoting role of the specifically adsorbed OH anions and RhOH. In all cases, ORR on Rh(poly) proceeds through the 4e-series reaction pathway. Full article
(This article belongs to the Special Issue Exploring the Mechanisms and Kinetics of Electrocatalytic Reactions)
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