{"title":"Measurements of Dioxygen Formation in Catalytic Electrochemical Water Splitting","authors":"C. Tiwari, Y. Geletii","doi":"10.3390/catal14010013","DOIUrl":null,"url":null,"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. 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.","PeriodicalId":9794,"journal":{"name":"Catalysts","volume":"3 12","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysts","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.3390/catal14010013","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
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. 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.
水氧化是一种多电子复合反应,其最终产物是分子氧。尽管对水分离催化剂进行了广泛的研究,但在电化学氧进化反应(OER)研究中缺乏对氧产物形成的确认。文章对许多研究中观察到的趋势进行了批判性评估,这些研究仅仅依靠电化学方法对 OER 进行定量,而没有通过补充分析技术对氧产物进行确认。由于没有测量挥发的氧气,因此在定量 OER 过程中留下了关键的空白,并引发了对所报告结果的有效性和准确性的担忧。本文对气相色谱法、旋转环盘电极 (RRDE)、荧光氧探针、克拉克电极和容量测定法等分析技术进行了批判性分析和描述,以确保伏安法和散装电解法的可靠性和可信度,从而为 OER 过程提供更准确的评估。
期刊介绍:
Catalysts (ISSN 2073-4344) is an international open access journal of catalysts and catalyzed reactions. Catalysts publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.