Application of a Water-Soluble Matrix-Stabilized Palladium Nanoparticle Catalyst for Photcatalytic Hydrogen Generation with High Activity and Stabiity
| Autor: | Richard Pehn, Laura Capozzoli, Günther Knör, Johannes Prock, Katharina Ehrmann, Simon Salzl, Helena Roithmeyer, Werner Oberhauser, Johann Pann, Marvin Bendig, Holger Kopacka, Peter Brüggeller, Wolfgang Viertl |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Green chemistry
Green Chemistry Materials science Hydrogen 010405 organic chemistry Organic Chemistry Inorganic chemistry Nanoparticle chemistry.chemical_element 010402 general chemistry palladium 01 natural sciences 0104 chemical sciences Analytical Chemistry Catalysis Matrix (chemical analysis) chemistry hydrogen polyethylene glycol Photocatalysis nanoparticles Physical and Theoretical Chemistry photocatalysis Hydrogen production Palladium |
| Zdroj: | ChemPhotoChem 2 (2018): 271–276. doi:10.1002/cptc.201700115 info:cnr-pdr/source/autori:Prock, Johannes; Salzl, Simon; Ehrmann, Katharina; Viertl, Wolfgang; Pehn, Richard; Pann, Johann; Roithmeyer, Helena; Bendig, Marvin; Kopacka, Holger; Capozzoli, Laura; Oberhauser, Werner; Knoer, Guenther; Brueggeller, Peter/titolo:Application of a Water-Soluble Matrix-Stabilized Palladium Nanoparticle Catalyst for Photcatalytic Hydrogen Generation with High Activity and Stabiity/doi:10.1002%2Fcptc.201700115/rivista:ChemPhotoChem/anno:2018/pagina_da:271/pagina_a:276/intervallo_pagine:271–276/volume:2 |
| DOI: | 10.1002/cptc.201700115 |
| Popis: | Pd@(BiPy-PEG-OMe) is a catalyst comprised of palladium nanoparticles (Pd-NPs) stabilized and made water soluble by 2,2'-bipyridine- end-functionalized polyethylene glycol monomethyl ether (BiPy-PEG-OMe). The catalyst has been used in the past for nitrile hydrogenation. In this work, we prove that it is also very active for photocatalytic hydrogen generation, which might be true for more catalysts of its kind and therefore worthy of further investigation. Using the inexpensive photosensitizer Eosin Y, high turnover numbers (TONs) of over 4500 were achieved for the evolution of molecular hydrogen from pure water under visible-light irradiation. Replacing Eosin Y, which showed only a short lifetime under experimental conditions (i.e. a few hours), by a novel osmium-based metal complex, which is also characterized by its crystal structure, the longevity of the system can be boosted to over one and a half months with a maximum TON of 1500. Combining excellent yield and stability is a clear goal for further research. |
| Databáze: | OpenAIRE |
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