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Molecular Triad Con...
Molecular Triad Containing a TEMPO Catalyst Grafted on Mesoporous Indium Tin Oxide as a Photoelectrocatalytic Anode for Visible Light-Driven Alcohol Oxidation
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- Pati, Palas Baran (författare)
- Univ Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France.
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- Abdellah, Mohamed (författare)
- Uppsala universitet,Institutionen för kemi - Ångström,South Valley Univ, Qena Fac Sci, Dept Chem, Qena 83523, Egypt.
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- Diring, Stephane (författare)
- Univ Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France.
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- Hammarström, Leif, 1964- (författare)
- Uppsala universitet,Fysikalisk kemi
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- Odobel, Fabrice (författare)
- Univ Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France.
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Univ Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France Institutionen för kemi - Ångström (creator_code:org_t)
- 2021-06-22
- 2021
- Engelska.
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Ingår i: ChemSusChem. - : John Wiley & Sons. - 1864-5631 .- 1864-564X. ; 14:14, s. 2902-2913
- Relaterad länk:
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https://hal-cnrs.arc...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Photoelectrochemical cells based on semiconductors are among the most studied methods of artificial photosynthesis. This study concerns the immobilization, on a mesoporous conducting indium tin oxide electrode (nano-ITO), of a molecular triad (NDADI-P-Ru-TEMPO) composed of a ruthenium tris-bipyridine complex (Ru) as photosensitizer, connected at one end to 2,2,6,6-tetramethyl-1-piperidine N-oxyl (TEMPO) as alcohol oxidation catalyst and at the other end to the electron acceptor naphthalenedicarboxyanhydride dicarboximide (NDADI). Light irradiation of NDADI-P-Ru-TEMPO grafted to nano-ITO in a pH 10 carbonate buffer effects selective oxidation of para-methoxybenzyl alcohol (MeO-BA) to para-methoxybenzaldehyde with a TON of approximately 150 after 1 h of photolysis at a bias of 0.4 V vs. SCE. The faradaic efficiency is found to be of 80 +/- 5 %. The photophysical study indicates that photoinduced electron transfer from the Ru complex to NDADI is a slow process and must compete with direct electron injection into ITO to have a better performing system. This work sheds light on some of the important ways to design more efficient molecular systems for the preparation of photoelectrocatalytic cells based on catalyst-dye-acceptor arrays immobilized on conducting electrodes.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- alcohol oxidation
- artificial photosynthesis
- photocatalysis
- photoelectrochemical cells
- ruthenium
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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