Two-photon water splitting and related work for a green hydrogen economy / vorgelegt von Jacob Schneidewind
Herein, discovery of the first mechanism for water splitting that only requires two photons is described. Through detailed kinetic, spectroscopic and computational investigations of a molecular ruthenium complex, it was found that absorption of the first, shorter wavelength photon generates an intermediate capable of absorbing the second, longer wavelength photon. Oxygen and hydrogen can then be released. By only requiring two photons and having the ability to use a wide wavelength range, this mechanism could form the basis for the development of a new class of water splitting catalysts.<eng>.
Diese Arbeit beschreibt die Entdeckung des ersten Mechanismus für Wasserspaltung, welcher lediglich zwei Photonen erfordert. Detaillierte experimentelle und theoretische Studien eines Rutheniumkomplexes haben gezeigt, dass die Absorption des ersten, kurzwelligen Photons ein Intermediat erzeugt, welches das zweite, langwellige Photon absorbieren kann, gefolgt von Sauerstoff und Wasserstoff Freisetzung. Da nur zwei Photonen benötigt werden und ein breiter Wellenlängenbereich genutzt werden kann, könnte dies die Grundlage für eine neue Klasse von Wasserspaltungskatalysatoren bilden.<ger>.
Medienart: |
E-Book |
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Erscheinungsjahr: |
2020 |
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Erschienen: |
Rostock: Universität ; 2020 Rostock: Universitätsbibliothek |
Weitere Ausgaben: |
Erscheint auch als Druck-Ausgabe: Two-photon water splitting and related work for a green hydrogen economy |
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Sprache: |
Englisch |
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Beteiligte Personen: |
Schneidewind, Jacob, 1996- [VerfasserIn] |
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Hochschulschrift: |
Dissertation, Universität Rostock, 2021, Kumulative Dissertation |
Links: |
purl.uni-rostock.de [kostenfrei] |
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BKL: | |
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Themen: |
Fotokatalyse |
Anmerkungen: |
Enthält Zeitschriftenartikel GutachterInnen: Matthias Beller (Universität Rostock, Leibniz-Institut für Katalyse e.V.) ; Stefanie Tschierlei (Technische Universität Braunschweig) ; Burkhard König (Universität Regensburg) |
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Beschreibung: |
Adobe Acrobat Reader. |
Umfang: |
1 Online-Ressource (circa 290 Seiten) |
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doi: |
10.18453/rosdok_id00002965 |
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Weitere IDs: |
urn:nbn:de:gbv:28-rosdok_id00002965-2 |
funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
1750398451 |
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502 | |b Dissertation |c Universität Rostock |d 2021 |g Kumulative Dissertation | ||
520 | |a Herein, discovery of the first mechanism for water splitting that only requires two photons is described. Through detailed kinetic, spectroscopic and computational investigations of a molecular ruthenium complex, it was found that absorption of the first, shorter wavelength photon generates an intermediate capable of absorbing the second, longer wavelength photon. Oxygen and hydrogen can then be released. By only requiring two photons and having the ability to use a wide wavelength range, this mechanism could form the basis for the development of a new class of water splitting catalysts.<eng> | ||
520 | |a Diese Arbeit beschreibt die Entdeckung des ersten Mechanismus für Wasserspaltung, welcher lediglich zwei Photonen erfordert. Detaillierte experimentelle und theoretische Studien eines Rutheniumkomplexes haben gezeigt, dass die Absorption des ersten, kurzwelligen Photons ein Intermediat erzeugt, welches das zweite, langwellige Photon absorbieren kann, gefolgt von Sauerstoff und Wasserstoff Freisetzung. Da nur zwei Photonen benötigt werden und ein breiter Wellenlängenbereich genutzt werden kann, könnte dies die Grundlage für eine neue Klasse von Wasserspaltungskatalysatoren bilden.<ger> | ||
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986 | |2 358 |1 00 |x DE-Bre2 |a Kurzreferat |b In this work, discovery of a new mechanism for light-driven water splitting is described. In this mechanism, only two photons are required to complete the reaction, significantly reducing kinetic complexity. Furthermore, the two absorbed photons have different wavelengths, spanning a large part of the visible spectrum up to red light. The mechanism was discovered through a combined kinetic, spectroscopic and computational study of a previously reported reaction using a molecular ruthenium complex. The authors show that absorption of the first, shorter wavelength photon produces an intermediate capable of absorbing the second, longer wavelength photon. Second photon absorption directly induces O-O bond formation, enabling subsequent O2 and H2 release. This two-photon mechanism can therefore address both kinetic complexity and visible light utilization by moving beyond the reaction blueprint of photosynthesis. The authors hope that this can inspire the development of a new class of water splitting catalysts capable of economic green hydrogen production. | ||
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