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A Robust Molecular ...
A Robust Molecular Catalyst Generated In Situ for Photoand Electrochemical Water Oxidation
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- Younus, H. A. (författare)
- Wuhan University of Technology,Fayoum University,Tomskij Politehniceskij Universitet,Tomsk Polytechnic University,State Key Laboratory of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 P.R. China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070 P.R. China; National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk, 634050 Russia; Chemistry Department, Faculty of Science, Fayoum University, Fayoum, 36514 Egypt
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- Ahmad, N. (författare)
- Wuhan University of Technology,Tomskij Politehniceskij Universitet,Tomsk Polytechnic University,State Key Laboratory of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 P.R. China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070 P.R. China; National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk, 634050 Russia
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- Chughtai, A. H. (författare)
- Wuhan University of Technology,State Key Laboratory of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 P.R. China
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- Vandichel, Matthias, 1985 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Center for Molecular Modeling, Ghent University, Technology Park 903, 9052 Zwijnaarde, Belgium Department of Physics and Competence Center for Catalysis, Chalmers University of Technology, Fysikgränd 3, Göteborg, Sweden
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- Busch, Michael, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Physics and Competence Center for Catalysis, Chalmers University of Technology, Fysikgränd 3, Göteborg, Sweden
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- Van Hecke, K. (författare)
- Universiteit Gent,Ghent university,Department of Inorganic and Physical Chemistry, Laboratory of Organometallic Chemistry and Catalysis, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium
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- Yusubov, M. (författare)
- Tomskij Politehniceskij Universitet,Tomsk Polytechnic University,National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk, 634050 Russia
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- Song, S. X. (författare)
- Wuhan University of Technology,School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070 P.R. China
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- Verpoort, F. (författare)
- Wuhan University of Technology,Universiteit Gent,Ghent university,Tomskij Politehniceskij Universitet,Tomsk Polytechnic University,State Key Laboratory of Advanced Technology for Materials, Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 P.R. China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070 P.R. China; National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk, 634050 Russia; Department of Inorganic and Physical Chemistry, Laboratory of Organometallic Chemistry and Catalysis, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium
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(creator_code:org_t)
- 2017-02-21
- 2017
- Engelska.
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Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 10:5, s. 862-875
- Relaterad länk:
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https://doi.org/10.1...
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https://research.cha...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Water splitting is the key step towards artificial photosystems for solar energy conversion and storage in the form of chemical bonding. The oxidation of water is the bottle-neck of this process that hampers its practical utility; hence, efficient, robust, and easy to make catalytic systems based on cheap and earth-abundant materials are of exceptional importance. Herein, an in situ generated cobalt catalyst, [Co-II(TCA)(2)(H2O)(2)] (TCA=1-mesityl-1,2,3-1H-triazole-4-carboxylate), that efficiently conducts photochemical water oxidation under near-neutral conditions is presented. The catalyst showed high stability under photolytic conditions for more than 3 h of photoirradiation. During electrochemical water oxidation, the catalytic system assembled a catalyst film, which proved not to be cobalt oxide/hydroxide as normally expected, but instead, and for the first time, generated a molecular cobalt complex that incorporated the organic ligand bound to cobalt ions. The catalyst film exhibited a low overpotential for electrocatalytic water oxidation (360 mV) and high oxygen evolution peak current densities of 9 and 2.7 mA cm(-2) on glassy carbon and indium-doped tin oxide electrodes, respectively, at only 1.49 and 1.39 V ( versus a normal hydrogen electrode), respectively, under neutral conditions. This finding, exemplified on the in situ generated cobalt complex, might be applicable to other molecular systems and suggests that the formation of a catalytic film in electrochemical water oxidation experiments is not always an indication of catalyst decomposition and the formation of nanoparticles.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- electrochemistry
- cobalt
- oxidation
- water splitting
- photochemistry
Publikations- och innehållstyp
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Till lärosätets databas
- Av författaren/redakt...
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Younus, H. A.
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Ahmad, N.
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Chughtai, A. H.
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Vandichel, Matth ...
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Busch, Michael, ...
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Van Hecke, K.
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visa fler...
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Yusubov, M.
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Song, S. X.
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Verpoort, F.
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
- Artiklar i publikationen
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ChemSusChem
- Av lärosätet
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Chalmers tekniska högskola
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Luleå tekniska universitet