Photocatalytic hydrogen evolution by iridium(III)–rhodium(III) system: Effect of the free ligand addition
| Autor: | Danila B. Vasilchenko, D.V. Kozlov, S.V. Tkachev, Ekaterina A. Kozlova, A. Yu. Kurenkova |
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| Rok vydání: | 2016 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Ligand Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences 0104 chemical sciences Catalysis Rhodium chemistry.chemical_compound Fuel Technology chemistry Pyridine Photocatalysis Quantum efficiency Iridium 0210 nano-technology Hydrogen production |
| Zdroj: | International Journal of Hydrogen Energy. 41:2592-2597 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2015.12.096 |
| Popis: | Rh(III) complexes of the general form {RhL4Cl2} with pyridine derivatives ligands (L) were used for the first time as water reduction catalysts in photocatalytic hydrogen generation process in pair with [Ir(ppy)2bpy]+ complex as a photosynthesizer. The efficiency of given Ir(III)–Rh(III) systems in the photocatalytic hydrogen generation process was found to be on the level of 20–30% which is corresponding to the highest currently achieved quantum efficiency values for homogeneous photocatalysts. Fast deactivation of the systems due to destruction of {RhL4Cl2} units was observed but it was suppressed via addition of extra amount of free L ligand in the reaction mixture. Quantum efficiency of modified in this manner [Ir(ppy)2bpy]+/{RhL4Cl2} systems achieved up to 80% value. |
| Databáze: | OpenAIRE |
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