Jing Zhou, Qianyue Liang, Pu Huang, Jing Xu, Tengfei Niu, Yao Wang, Yuming Dong and Jiawei Zhang
{"title":"利用尖端曲率诱导的局部电场将二氧化碳高效电还原为乙醇","authors":"Jing Zhou, Qianyue Liang, Pu Huang, Jing Xu, Tengfei Niu, Yao Wang, Yuming Dong and Jiawei Zhang","doi":"10.1039/D4NR01173B","DOIUrl":null,"url":null,"abstract":"<p >Electrocatalytic reduction of CO<small><sub>2</sub></small> into multicarbon (C<small><sub>2+</sub></small>) products offers a promising pathway for CO<small><sub>2</sub></small> utilization. However, achieving high selectivity towards multicarbon alcohols, such as ethanol, remains a challenge. In this work, we present a novel CuO nanoflower catalyst with engineered tip curvature, achieving remarkable selectivity and efficiency in the electroreduction of CO<small><sub>2</sub></small> to ethanol. This catalyst exhibits an ethanol faradaic efficiency (FE<small><sub>ethanol</sub></small>) of 47% and a formation rate of 320 μmol h<small><sup>−1</sup></small> cm<small><sup>−2</sup></small>, with an overall C<small><sub>2+</sub></small> product faradaic efficiency (FE<small><sub>C<small><sub>2+</sub></small></sub></small>) reaching ∼77.8%. We attribute this performance to the catalyst's sharp tip, which generates a strong local electric field, thereby accelerating CO<small><sub>2</sub></small> activation and facilitating C–C coupling for deep CO<small><sub>2</sub></small> reduction. <em>In situ</em> Raman spectroscopy reveals an increased *OH coverage under operating conditions, where the enhanced *OH adsorption facilitates the stabilization of *CHCOH intermediates through hydrogen bonding interaction, thus improving ethanol selectivity. Our findings demonstrate the pivotal role of local electric fields in altering reaction kinetics for CO<small><sub>2</sub></small> electroreduction, presenting a new avenue for catalyst design aiming at converting CO<small><sub>2</sub></small> to ethanol.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Efficient CO2 electroreduction to ethanol enabled by tip-curvature-induced local electric fields†\",\"authors\":\"Jing Zhou, Qianyue Liang, Pu Huang, Jing Xu, Tengfei Niu, Yao Wang, Yuming Dong and Jiawei Zhang\",\"doi\":\"10.1039/D4NR01173B\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Electrocatalytic reduction of CO<small><sub>2</sub></small> into multicarbon (C<small><sub>2+</sub></small>) products offers a promising pathway for CO<small><sub>2</sub></small> utilization. However, achieving high selectivity towards multicarbon alcohols, such as ethanol, remains a challenge. In this work, we present a novel CuO nanoflower catalyst with engineered tip curvature, achieving remarkable selectivity and efficiency in the electroreduction of CO<small><sub>2</sub></small> to ethanol. This catalyst exhibits an ethanol faradaic efficiency (FE<small><sub>ethanol</sub></small>) of 47% and a formation rate of 320 μmol h<small><sup>−1</sup></small> cm<small><sup>−2</sup></small>, with an overall C<small><sub>2+</sub></small> product faradaic efficiency (FE<small><sub>C<small><sub>2+</sub></small></sub></small>) reaching ∼77.8%. We attribute this performance to the catalyst's sharp tip, which generates a strong local electric field, thereby accelerating CO<small><sub>2</sub></small> activation and facilitating C–C coupling for deep CO<small><sub>2</sub></small> reduction. <em>In situ</em> Raman spectroscopy reveals an increased *OH coverage under operating conditions, where the enhanced *OH adsorption facilitates the stabilization of *CHCOH intermediates through hydrogen bonding interaction, thus improving ethanol selectivity. Our findings demonstrate the pivotal role of local electric fields in altering reaction kinetics for CO<small><sub>2</sub></small> electroreduction, presenting a new avenue for catalyst design aiming at converting CO<small><sub>2</sub></small> to ethanol.</p>\",\"PeriodicalId\":92,\"journal\":{\"name\":\"Nanoscale\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-06-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nanoscale\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/nr/d4nr01173b\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanoscale","FirstCategoryId":"88","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/nr/d4nr01173b","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Efficient CO2 electroreduction to ethanol enabled by tip-curvature-induced local electric fields†
Electrocatalytic reduction of CO2 into multicarbon (C2+) products offers a promising pathway for CO2 utilization. However, achieving high selectivity towards multicarbon alcohols, such as ethanol, remains a challenge. In this work, we present a novel CuO nanoflower catalyst with engineered tip curvature, achieving remarkable selectivity and efficiency in the electroreduction of CO2 to ethanol. This catalyst exhibits an ethanol faradaic efficiency (FEethanol) of 47% and a formation rate of 320 μmol h−1 cm−2, with an overall C2+ product faradaic efficiency (FEC2+) reaching ∼77.8%. We attribute this performance to the catalyst's sharp tip, which generates a strong local electric field, thereby accelerating CO2 activation and facilitating C–C coupling for deep CO2 reduction. In situ Raman spectroscopy reveals an increased *OH coverage under operating conditions, where the enhanced *OH adsorption facilitates the stabilization of *CHCOH intermediates through hydrogen bonding interaction, thus improving ethanol selectivity. Our findings demonstrate the pivotal role of local electric fields in altering reaction kinetics for CO2 electroreduction, presenting a new avenue for catalyst design aiming at converting CO2 to ethanol.
期刊介绍:
Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.