Covalent organic frameworks comprising cobalt porphyrins for catalytic CO <sub>2</sub> reduction in waterConversion of carbon dioxide (CO2) to carbon monoxide (CO) and other value-added carbon products is an important challenge for clean energy research. Here we report modular optimization of covalent organic frameworks (COFs), in which the building units are cobalt porphyrin catalysts linked by organic struts through imine bonds, to prepare a catalytic material for aqueous electrochemical reduction of CO2 to CO. The catalysts exhibit high Faradaic efficiency (90%) and turnover numbers (up to 290,000, with initial turnover frequency of 9400 hour(-1)) at pH 7 with an overpotential of -0.55 volts, equivalent to a 26-fold improvement in activity compared with the molecular cobalt complex, with no degradation over 24 hours. X-ray absorption data reveal the influence of the COF environment on the electronic structure of the catalytic cobalt centers.
Metals in Neurobiology: Probing Their Chemistry and Biology with Molecular ImagingADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTADDITION / CORRECTIONThis article has been corrected. View the notice.Metals in Neurobiology: Probing Their Chemistry and Biology with Molecular ImagingEmily L. Que, , Dylan W. Domaille, , and Christopher J. Chang, *View Author Information Department of Chemistry, University of California, Berkeley, California 94720* To whom correspondence should be addressed. Phone: (510)642-4704 . Fax: (510)642-7301. E-mail: [email protected]Cite this: Chem. Rev. 2008, 108, 5, 1517–1549Publication Date (Web):April 22, 2008Publication History Received26 October 2007Published online22 April 2008Published inissue 1 May 2008https://doi.org/10.1021/cr078203uCopyright © 2008 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views15385Altmetric-Citations1691LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit Read OnlinePDF (3 MB) Get e-AlertsSUBJECTS:Central nervous system,Copper,Fluorescence,Iron,Sensors Get e-Alerts