{"title":"经济Co(III)配合物质子继电器介导电催化析氢","authors":"D. Majumder, S. Kolay, V. S. Tripathi","doi":"10.1007/s12678-023-00823-0","DOIUrl":null,"url":null,"abstract":"<div><p>Bis(iminidiacetato)cobaltate(III) complex has been evaluated for electrocatalytic proton reduction. The process follows a rare pathway of protonation of ligand upon addition of a weak acid in DMF/water (9:1 v/v) medium. Thus, the complex becomes electroactive only in the presence of acid. In the presence of weak acid, a new reduction peak corresponding to Co<sup>I</sup>/Co<sup>0</sup> reduction is observed. The electrocatalytic activity towards proton reduction reaction is exhibited by this peak. An electrochemical-chemical-electrochemical (ECE) route initiated by proton relay on ligand site has been established for the electrocatalytic process. The catalytic activity of the complex in DMF/water medium was evaluated by controlled potential electrolysis, turnover number (TON), and turnover frequency (TOF).</p><h3>Graphical Abstract</h3>\n <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\n </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 4","pages":"602 - 610"},"PeriodicalIF":2.7000,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00823-0.pdf","citationCount":"0","resultStr":"{\"title\":\"Proton Relay Mediated Electrocatalytic Hydrogen Evolution by an Economic Co(III) Complex\",\"authors\":\"D. Majumder, S. Kolay, V. S. Tripathi\",\"doi\":\"10.1007/s12678-023-00823-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Bis(iminidiacetato)cobaltate(III) complex has been evaluated for electrocatalytic proton reduction. The process follows a rare pathway of protonation of ligand upon addition of a weak acid in DMF/water (9:1 v/v) medium. Thus, the complex becomes electroactive only in the presence of acid. In the presence of weak acid, a new reduction peak corresponding to Co<sup>I</sup>/Co<sup>0</sup> reduction is observed. The electrocatalytic activity towards proton reduction reaction is exhibited by this peak. An electrochemical-chemical-electrochemical (ECE) route initiated by proton relay on ligand site has been established for the electrocatalytic process. The catalytic activity of the complex in DMF/water medium was evaluated by controlled potential electrolysis, turnover number (TON), and turnover frequency (TOF).</p><h3>Graphical Abstract</h3>\\n <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\\n </div>\",\"PeriodicalId\":535,\"journal\":{\"name\":\"Electrocatalysis\",\"volume\":\"14 4\",\"pages\":\"602 - 610\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2023-04-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s12678-023-00823-0.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrocatalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12678-023-00823-0\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12678-023-00823-0","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Proton Relay Mediated Electrocatalytic Hydrogen Evolution by an Economic Co(III) Complex
Bis(iminidiacetato)cobaltate(III) complex has been evaluated for electrocatalytic proton reduction. The process follows a rare pathway of protonation of ligand upon addition of a weak acid in DMF/water (9:1 v/v) medium. Thus, the complex becomes electroactive only in the presence of acid. In the presence of weak acid, a new reduction peak corresponding to CoI/Co0 reduction is observed. The electrocatalytic activity towards proton reduction reaction is exhibited by this peak. An electrochemical-chemical-electrochemical (ECE) route initiated by proton relay on ligand site has been established for the electrocatalytic process. The catalytic activity of the complex in DMF/water medium was evaluated by controlled potential electrolysis, turnover number (TON), and turnover frequency (TOF).
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