{"title":"分离铋合金钌上亚硝酸盐还原成氨的电催化作用","authors":"","doi":"10.1016/j.jechem.2024.09.004","DOIUrl":null,"url":null,"abstract":"<div><p>Electrochemical reduction of NO<sub>2</sub><sup>−</sup> to NH<sub>3</sub> (NO<sub>2</sub><sup>−</sup>RR) is recognized as an appealing approach for achieving renewable NH<sub>3</sub> synthesis and waste NO<sub>2</sub><sup>−</sup> removal. Herein, we report isolated Bi alloyed Ru (Bi<sub>1</sub>Ru) as an efficient NO<sub>2</sub><sup>−</sup>RR catalyst. Theoretical calculations and in situ electrochemical measurements reveal the creation of Bi<sub>1</sub>-Ru dual sites which can remarkably promote NO<sub>2</sub><sup>−</sup> activation and suppress proton adsorption, while accelerating the NO<sub>2</sub><sup>−</sup>RR protonation energetics to render a high NO<sub>2</sub><sup>−</sup>-to-NH<sub>3</sub> conversion efficiency. Remarkably, Bi<sub>1</sub>Ru assembled in a flow cell delivers an NH<sub>3</sub> yield rate of 1901.4 μmol h<sup>−1</sup> cm<sup>−2</sup> and an NH<sub>3</sub>-Faradaic efficiency of 94.3% at an industrial-level current density of 324.3 mA cm<sup>−2</sup>. This study offers new perspectives for designing and constructing p-block single-atom alloys as robust and high-current-density NO<sub>2</sub><sup>−</sup>RR catalysts toward the ammonia electrosynthesis.</p></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Electrocatalytic nitrite reduction to ammonia on isolated bismuth alloyed ruthenium\",\"authors\":\"\",\"doi\":\"10.1016/j.jechem.2024.09.004\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Electrochemical reduction of NO<sub>2</sub><sup>−</sup> to NH<sub>3</sub> (NO<sub>2</sub><sup>−</sup>RR) is recognized as an appealing approach for achieving renewable NH<sub>3</sub> synthesis and waste NO<sub>2</sub><sup>−</sup> removal. Herein, we report isolated Bi alloyed Ru (Bi<sub>1</sub>Ru) as an efficient NO<sub>2</sub><sup>−</sup>RR catalyst. Theoretical calculations and in situ electrochemical measurements reveal the creation of Bi<sub>1</sub>-Ru dual sites which can remarkably promote NO<sub>2</sub><sup>−</sup> activation and suppress proton adsorption, while accelerating the NO<sub>2</sub><sup>−</sup>RR protonation energetics to render a high NO<sub>2</sub><sup>−</sup>-to-NH<sub>3</sub> conversion efficiency. Remarkably, Bi<sub>1</sub>Ru assembled in a flow cell delivers an NH<sub>3</sub> yield rate of 1901.4 μmol h<sup>−1</sup> cm<sup>−2</sup> and an NH<sub>3</sub>-Faradaic efficiency of 94.3% at an industrial-level current density of 324.3 mA cm<sup>−2</sup>. This study offers new perspectives for designing and constructing p-block single-atom alloys as robust and high-current-density NO<sub>2</sub><sup>−</sup>RR catalysts toward the ammonia electrosynthesis.</p></div>\",\"PeriodicalId\":15728,\"journal\":{\"name\":\"Journal of Energy Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":13.1000,\"publicationDate\":\"2024-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Energy Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2095495624006247\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Energy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Energy Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2095495624006247","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Energy","Score":null,"Total":0}
Electrocatalytic nitrite reduction to ammonia on isolated bismuth alloyed ruthenium
Electrochemical reduction of NO2− to NH3 (NO2−RR) is recognized as an appealing approach for achieving renewable NH3 synthesis and waste NO2− removal. Herein, we report isolated Bi alloyed Ru (Bi1Ru) as an efficient NO2−RR catalyst. Theoretical calculations and in situ electrochemical measurements reveal the creation of Bi1-Ru dual sites which can remarkably promote NO2− activation and suppress proton adsorption, while accelerating the NO2−RR protonation energetics to render a high NO2−-to-NH3 conversion efficiency. Remarkably, Bi1Ru assembled in a flow cell delivers an NH3 yield rate of 1901.4 μmol h−1 cm−2 and an NH3-Faradaic efficiency of 94.3% at an industrial-level current density of 324.3 mA cm−2. This study offers new perspectives for designing and constructing p-block single-atom alloys as robust and high-current-density NO2−RR catalysts toward the ammonia electrosynthesis.
期刊介绍:
The Journal of Energy Chemistry, the official publication of Science Press and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, serves as a platform for reporting creative research and innovative applications in energy chemistry. It mainly reports on creative researches and innovative applications of chemical conversions of fossil energy, carbon dioxide, electrochemical energy and hydrogen energy, as well as the conversions of biomass and solar energy related with chemical issues to promote academic exchanges in the field of energy chemistry and to accelerate the exploration, research and development of energy science and technologies.
This journal focuses on original research papers covering various topics within energy chemistry worldwide, including:
Optimized utilization of fossil energy
Hydrogen energy
Conversion and storage of electrochemical energy
Capture, storage, and chemical conversion of carbon dioxide
Materials and nanotechnologies for energy conversion and storage
Chemistry in biomass conversion
Chemistry in the utilization of solar energy