Electrocatalytic Water Oxidation, 2nd Edition

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

Deadline for manuscript submissions: 30 September 2024 | Viewed by 1298

Special Issue Editors


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Guest Editor
Department of Chemistry, Emory University, Atlanta, GA 30322, USA
Interests: artificial photosynthesis; water splitting; water oxidation catalysts; electron transfer reactions
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Guest Editor
School of Chemistry, Monash University, Clayton, VIC 3800, Australia
Interests: electrocatalysis of water splitting reactions; materials for electrical energy storage and conversion; semiconductor and electrochromic nanomaterials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to announce the launch of the second edition of our Special Issue titled “Electrocatalytic Water Oxidation, 2nd Edition”. 

Water electrolysis to produce oxygen and hydrogen gas is a promising option to convert solar energy to fuel. Electrolyzers, particularly the ones using a liquid alkaline solution of sodium or potassium hydroxide as the electrolyte, have been commercially available for many years, but their electrical efficiency is rather low, 70–80%. Water oxidation on anode is a 4-electron process that requires the use of a cost-effective catalyst. Despite numerous efforts, such catalysts for a new generation of electrolyzers have not yet been developed. This Special Issue will be mostly focused on understanding the mechanism of water oxidation in the presence of homogeneous or immobilized molecular catalysts. The catalysts with thoroughly characterized reactive centers will be also considered.

Dr. Yurii V. Geletii
Dr. Tam D. Nguyen
Guest Editors

Manuscript Submission Information

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Keywords

  • water oxidation
  • electron transfer
  • molecular catalyst
  • mechanism of O2 formation

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Published Papers (1 paper)

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7 pages, 192 KiB  
Opinion
Measurements of Dioxygen Formation in Catalytic Electrochemical Water Splitting
by Chandan Kumar Tiwari and Yurii V. Geletii
Catalysts 2024, 14(1), 13; https://doi.org/10.3390/catal14010013 - 22 Dec 2023
Viewed by 1073
Abstract
Water oxidation is a multielectron complex reaction that produces molecular oxygen as the final product. The article addresses the lack of confirmation of oxygen product formation in electrochemical oxygen evolution reaction (OER) studies, despite the extensive research conducted on catalysts for water splitting. [...] Read more.
Water oxidation is a multielectron complex reaction that produces molecular oxygen as the final product. The article addresses the lack of confirmation of oxygen product formation in electrochemical oxygen evolution reaction (OER) studies, despite the extensive research conducted on catalysts for water splitting. It critically evaluates the trend observed in many studies that solely rely on electrochemical methods for OER quantification without confirming the oxygen product via complementary analytical techniques. The omission of measuring evolved oxygen gas leaves a crucial gap in the quantification of the OER process and raises concerns about the validity and accuracy of reported results. Analytical techniques, such as gas chromatography, Rotating Ring-Disk Electrode (RRDE), fluorescence oxygen probes, Clark electrode, and volumetry are critically analyzed and described to ensure the reliability and credibility of voltammetry and bulk electrolysis to provide a more accurate assessment of the OER process. Full article
(This article belongs to the Special Issue Electrocatalytic Water Oxidation, 2nd Edition)
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