In Situ Formation of an Oxygen-Evolving Catalyst in Neutral Water Containing Phosphate and Co ²⁺

Science, Journal Year: 2008, Volume and Issue: 321(5892), P. 1072 - 1075

Published: Aug. 1, 2008

The utilization of solar energy on a large scale requires its storage. In natural photosynthesis, from sunlight is used to rearrange the bonds water oxygen and hydrogen equivalents. realization artificial systems that perform "water splitting" catalysts produce without need for excessive driving potentials. Here we report such catalyst forms upon oxidative polarization an inert indium tin oxide electrode in phosphate-buffered containing cobalt (II) ions. A variety analytical techniques indicates presence phosphate approximate 1:2 ratio with this material. pH dependence catalytic activity also implicates ion as proton acceptor oxygen-producing reaction. This not only situ earth-abundant materials but operates neutral under ambient conditions.

Language: Английский

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Proton-Coupled Electron Transfer

Chemical Reviews, Journal Year: 2012, Volume and Issue: 112(7), P. 4016 - 4093

Published: June 18, 2012

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTProton-Coupled Electron TransferDavid R. Weinberg†§, Christopher J. Gagliardi†, Jonathan F. Hull†, Christine Fecenko Murphy‡, Caleb A. Kent†, Brittany C. Westlake∥, Amit Paul†, Daniel H. Ess†, Dewey Granville McCafferty*‡, and Thomas Meyer*†View Author Information† Department of Chemistry, University North Carolina at Chapel Hill, 27599-3290, United States‡ B219 Levine Science Research Center, Box 90354, Duke University, Durham, 27708-0354, States§ Physical Environmental Sciences, Colorado Mesa 1100 Avenue, Grand Junction, 81501-3122, States∥ The American Chemical Society, 1155 Sixteenth Street NW, Washington, District Columbia 20036, States*E-mail: [email protected]Cite this: Chem. Rev. 2012, 112, 7, 4016–4093Publication Date (Web):June 18, 2012Publication History Received19 May 2011Published online18 June 2012Published inissue 11 July 2012https://pubs.acs.org/doi/10.1021/cr200177jhttps://doi.org/10.1021/cr200177jreview-articleACS PublicationsCopyright © 2012 SocietyRequest reuse permissionsArticle Views44915Altmetric-Citations1339LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated by Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research has received online. Clicking on donut icon will load page altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Charge transfer,Oxidation,Proton coupled electron transfer,Reaction mechanisms,Redox reactions Get e-Alerts

Language: Английский

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CO₂ photo-reduction: insights into CO₂ activation and reaction on surfaces of photocatalysts

Energy & Environmental Science, Journal Year: 2016, Volume and Issue: 9(7), P. 2177 - 2196

Published: Jan. 1, 2016

This review describes the current understanding of CO₂ photoreduction on surface heterogeneous catalysts with a particular focus reaction mechanism and pathways as well adsorption/activation CO₂.

Language: Английский

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The Mechanism of Water Oxidation: From Electrolysis via Homogeneous to Biological Catalysis

ChemCatChem, Journal Year: 2010, Volume and Issue: 2(7), P. 724 - 761

Published: June 28, 2010

Abstract Striving for new solar fuels, the water oxidation reaction currently is considered to be a bottleneck, hampering progress in development of applicable technologies conversion light into storable fuels. This review compares and unifies viewpoints on from various fields catalysis research. The first part deals with thermodynamic efficiency mechanisms electrochemical splitting by metal oxides electrode surfaces, explaining recent concept potential‐determining step. Subsequently, novel cobalt oxide‐based catalysts heterogeneous (electro)catalysis are discussed. These may share structural functional properties surface oxides, multinuclear molecular catalytic manganese–calcium complex photosynthetic oxidation. Recent developments homogeneous water‐oxidation outlined focus discovery mononuclear ruthenium (and non‐ruthenium) complexes that efficiently mediate O 2 evolution water. Water photosynthesis subject concise presentation structure function natural paragon—the photosystem II—for which ideas concerning redox‐potential leveling, proton removal, OO bond formation last highlights common themes unifying concepts.

Language: Английский

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Thermochemistry of Proton-Coupled Electron Transfer Reagents and its Implications

Chemical Reviews, Journal Year: 2010, Volume and Issue: 110(12), P. 6961 - 7001

Published: Oct. 6, 2010

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTADDITION / CORRECTIONThis article has been corrected. View the notice.Thermochemistry of Proton-Coupled Electron Transfer Reagents and its ImplicationsJeffrey J. Warren, Tristan A. Tronic, James M. Mayer*View Author Information Department Chemistry, University Washington, Box 351700, Seattle, Washington 98195-1700* To whom correspondence should be addressed. E-mail: [email protected]Cite this: Chem. Rev. 2010, 110, 12, 6961–7001Publication Date (Web):October 6, 2010Publication History Received8 March 2010Published online6 October inissue 8 December 2010https://pubs.acs.org/doi/10.1021/cr100085khttps://doi.org/10.1021/cr100085kreview-articleACS PublicationsCopyright © 2010 American Chemical SocietyRequest reuse permissionsArticle Views37256Altmetric-Citations1351LEARN ABOUT THESE METRICSArticle Views are COUNTER-compliant sum full text downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated by Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Bond cleavage,Bond dissociation free energy,Charge transfer,Proton coupled electron transfer,Redox reactions Get e-Alerts

Language: Английский

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Light-Driven Heterogeneous Reduction of Carbon Dioxide: Photocatalysts and Photoelectrodes

Chemical Reviews, Journal Year: 2015, Volume and Issue: 115(23), P. 12888 - 12935

Published: Oct. 7, 2015

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTLight-Driven Heterogeneous Reduction of Carbon Dioxide: Photocatalysts and PhotoelectrodesJames L. White†, Maor F. Baruch†, James E. Pander III†, Yuan Hu†, Ivy C. Fortmeyer†, Eujin Park†, Tao Zhang†, Kuo Liao†, Jing Gu‡, Yong Yan‡, Travis W. Shaw†, Esta Abelev†, Andrew B. Bocarsly*†View Author Information† Department Chemistry, Princeton University , Princeton, New Jersey 08544, United States ‡ Chemical Materials Science Center, National Renewable Energy Laboratory Golden, Colorado 80401, *(A.B.B.) E-mail: [email protected]Cite this: Chem. Rev. 2015, 115, 23, 12888–12935Publication Date (Web):October 7, 2015Publication History Received23 June 2015Published online7 October inissue 9 December 2015https://pubs.acs.org/doi/10.1021/acs.chemrev.5b00370https://doi.org/10.1021/acs.chemrev.5b00370review-articleACS PublicationsCopyright © 2015 American SocietyRequest reuse permissionsArticle Views39261Altmetric-Citations1388LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated by Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Catalysts,Electrodes,Oxides,Redox reactions,Semiconductors Get e-Alerts

Language: Английский

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Artificial Photosynthesis: Molecular Systems for Catalytic Water Oxidation

Chemical Reviews, Journal Year: 2014, Volume and Issue: 114(24), P. 11863 - 12001

Published: Oct. 29, 2014

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTArtificial Photosynthesis: Molecular Systems for Catalytic Water OxidationMarkus D. Kärkäs*, Oscar Verho, Eric V. Johnston, and Björn Åkermark*View Author Information Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden*E-mail: [email protected]*E-mail: protected]Cite this: Chem. Rev. 2014, 114, 24, 11863–12001Publication Date (Web):October 29, 2014Publication History Received11 October 2013Published online29 2014Published inissue 24 December 2014https://doi.org/10.1021/cr400572fCopyright © 2014 American Chemical SocietyRIGHTS & PERMISSIONSACS AuthorChoiceArticle Views36769Altmetric-Citations1068LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated by Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InReddit (39 MB) Get e-AlertsSUBJECTS:Catalysts,Ligands,Oxidation,Redox reactions,Transition metals e-Alerts

Language: Английский

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Structural and Functional Analogues of the Active Sites of the [Fe]-, [NiFe]-, and [FeFe]-Hydrogenases

Chemical Reviews, Journal Year: 2009, Volume and Issue: 109(6), P. 2245 - 2274

Published: May 13, 2009

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTStructural and Functional Analogues of the Active Sites [Fe]-, [NiFe]-, [FeFe]-Hydrogenases†Cédric Tard Christopher J. Pickett*View Author Information Laboratoire d'Electrochimie Moléculaire, Unité Mixte de Recherche Université—CNRS 7591, Université Paris Diderot, 15 rue Jean-Antoine Baïf, 75013 Paris, France Energy Materials Laboratory, School Chemistry, University East Anglia, Norwich NR4 7TJ, United Kingdom†This article is part Hydrogen special issue.* Corresponding author E-mail: [email protected]Cite this: Chem. Rev. 2009, 109, 6, 2245–2274Publication Date (Web):May 13, 2009Publication History Received6 December 2008Published online13 May 2009Published inissue 10 June 2009https://pubs.acs.org/doi/10.1021/cr800542qhttps://doi.org/10.1021/cr800542qreview-articleACS PublicationsCopyright © 2009 American Chemical SocietyRequest reuse permissionsArticle Views12275Altmetric-Citations1158LEARN ABOUT THESE METRICSArticle Views are COUNTER-compliant sum full text downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated by Crossref daily. Find more information about citation counts.The Altmetric Attention Score a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Anions,Inorganic carbon compounds,Iron,Ligands,Peptides proteins Get e-Alerts

Language: Английский

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Mechanistic Studies of the Oxygen Evolution Reaction by a Cobalt-Phosphate Catalyst at Neutral pH

Journal of the American Chemical Society, Journal Year: 2010, Volume and Issue: 132(46), P. 16501 - 16509

Published: Oct. 26, 2010

The mechanism of the oxygen evolution reaction (OER) by catalysts prepared electrodepositions from Co(2+) solutions in phosphate electrolytes (Co-Pi) was studied at neutral pH electrokinetic and (18)O isotope experiments. Low-potential enabled controlled preparation ultrathin Co-Pi catalyst films (<100 nm) that could be kinetically absence mass transport charge limitations to OER. exhibit a Tafel slope approximately equal 2.3 × RT/F for production water solutions. electrochemical rate law exhibits an inverse first order dependence on proton activity zeroth [Pi] ≥ 0.03 M. In buffer, is increased ∼3-fold overall greatly diminished. Together, these studies suggest involving rapid, one electron, equilibrium between Co(III)-OH Co(IV)-O which species acceptor, followed chemical turnover-limiting process oxygen-oxygen bond coupling.

Language: Английский

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Homogeneously Catalyzed Electroreduction of Carbon Dioxide—Methods, Mechanisms, and Catalysts

Chemical Reviews, Journal Year: 2018, Volume and Issue: 118(9), P. 4631 - 4701

Published: Jan. 10, 2018

The utilization of CO2 via electrochemical reduction constitutes a promising approach toward production value-added chemicals or fuels using intermittent renewable energy sources. For this purpose, molecular electrocatalysts are frequently studied and the recent progress both in tuning catalytic properties mechanistic understanding is truly remarkable. While earlier years research efforts were focused on complexes with rare metal centers such as Re, Ru, Pd, focus has recently shifted earth-abundant transition metals Mn, Fe, Co, Ni. By application appropriate ligands, these have been rendered more than competitive for compared to heavier homologues. In addition, important roles second outer coordination spheres processes become apparent, metal–ligand cooperativity well-established tool further behavior. Surprising advances also made very simple organocatalysts, although mechanisms behind their reactivity not yet entirely understood. Herein, developments last three decades electrocatalytic homogeneous catalysts reviewed. A discussion underlying principles included along treatment experimental computational techniques studies catalyst benchmarking. Important families discussed detail regard aspects, field highlighted.

Language: Английский

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