{"title":"Efficient electrocatalytic CO<sub>2</sub> reduction to ethylene using cuprous oxide derivatives.","authors":"Wenfei Dong, Dewen Fu, Zhifeng Zhang, Zhiqiang Wu, Hongjian Zhao, Wangsuo Liu","doi":"10.3389/fchem.2024.1482168","DOIUrl":null,"url":null,"abstract":"<p><p>Copper-based materials play a vital role in the electrochemical transformation of CO<sub>2</sub> into C<sub>2</sub>/C<sub>2+</sub> compounds. In this study, cross-sectional octahedral Cu<sub>2</sub>O microcrystals were prepared <i>in situ</i> on carbon paper electrodes via electrochemical deposition. The morphology and integrity of the exposed crystal surface (111) were meticulously controlled by adjusting the deposition potential, time, and temperature. These cross-sectional octahedral Cu<sub>2</sub>O microcrystals exhibited high electrocatalytic activity for ethylene (C<sub>2</sub>H<sub>4</sub>) production through CO<sub>2</sub> reduction. In a 0.1 M KHCO<sub>3</sub> electrolyte, the Faradaic efficiency for C<sub>2</sub>H<sub>4</sub> reached 42.0% at a potential of -1.376 V vs. RHE. During continuous electrolysis over 10 h, the FE (C<sub>2</sub>H<sub>4</sub>) remained stable around 40%. During electrolysis, the fully exposed (111) crystal faces of Cu<sub>2</sub>O microcrystals are reduced to Cu<sup>0</sup>, which enhances C-C coupling and could serve as the main active sites for catalyzing the conversion of CO<sub>2</sub> to C<sub>2</sub>H<sub>4</sub>.</p>","PeriodicalId":12421,"journal":{"name":"Frontiers in Chemistry","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11514382/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers in Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.3389/fchem.2024.1482168","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Copper-based materials play a vital role in the electrochemical transformation of CO2 into C2/C2+ compounds. In this study, cross-sectional octahedral Cu2O microcrystals were prepared in situ on carbon paper electrodes via electrochemical deposition. The morphology and integrity of the exposed crystal surface (111) were meticulously controlled by adjusting the deposition potential, time, and temperature. These cross-sectional octahedral Cu2O microcrystals exhibited high electrocatalytic activity for ethylene (C2H4) production through CO2 reduction. In a 0.1 M KHCO3 electrolyte, the Faradaic efficiency for C2H4 reached 42.0% at a potential of -1.376 V vs. RHE. During continuous electrolysis over 10 h, the FE (C2H4) remained stable around 40%. During electrolysis, the fully exposed (111) crystal faces of Cu2O microcrystals are reduced to Cu0, which enhances C-C coupling and could serve as the main active sites for catalyzing the conversion of CO2 to C2H4.
期刊介绍:
Frontiers in Chemistry is a high visiblity and quality journal, publishing rigorously peer-reviewed research across the chemical sciences. Field Chief Editor Steve Suib at the University of Connecticut is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to academics, industry leaders and the public worldwide.
Chemistry is a branch of science that is linked to all other main fields of research. The omnipresence of Chemistry is apparent in our everyday lives from the electronic devices that we all use to communicate, to foods we eat, to our health and well-being, to the different forms of energy that we use. While there are many subtopics and specialties of Chemistry, the fundamental link in all these areas is how atoms, ions, and molecules come together and come apart in what some have come to call the “dance of life”.
All specialty sections of Frontiers in Chemistry are open-access with the goal of publishing outstanding research publications, review articles, commentaries, and ideas about various aspects of Chemistry. The past forms of publication often have specific subdisciplines, most commonly of analytical, inorganic, organic and physical chemistries, but these days those lines and boxes are quite blurry and the silos of those disciplines appear to be eroding. Chemistry is important to both fundamental and applied areas of research and manufacturing, and indeed the outlines of academic versus industrial research are also often artificial. Collaborative research across all specialty areas of Chemistry is highly encouraged and supported as we move forward. These are exciting times and the field of Chemistry is an important and significant contributor to our collective knowledge.