Theoretical and Electrochemical Characterization of δ-RuCl2(Nazpy)2: Application to Oxidation of D-Glucose
| Autor: | Wawohinlin Patrice Ouattara, Kafoumba Bamba, Nahossé Ziao, Kouakou Nobel N’guessan |
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| Rok vydání: | 2016 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry Photochemistry Redox Catalysis Psychiatry and Mental health chemistry 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing 0210 nano-technology Selectivity HOMO/LUMO Carbon Bond cleavage Natural bond orbital |
| Zdroj: | American Journal of Analytical Chemistry. :57-66 |
| ISSN: | 2156-8278 2156-8251 |
| Popis: | The heterogenized δ-RuCl2(Nazpy)2 deposited on carbon toray (CT) was studied for the first time as electrochemical catalyst. Before, it was characterized by visible-ultraviolet spectra and theoretically by TDDFT method at B3LYP/Lanl2DZ level. It displayed an MLCT t2geg → π* transition where t2geg due to the structure of Nazpy that considerably reduces energy between d AOs of Ru represents the HOMO of the complex and π* is identified as the LUMO. Electrochemistry study shows two redox ranges in both negative and positive sides of the potential. The positive side that corresponds to the couple RuIV/RuIII of catalyst appears to be active for oxidation of D-glucose in carbonate buffer with a high turnover. Therefore, Keto-2-gluconic and gluconic acids were the two main products obtained with respectively 80% and 17.6% of selectivity. Moreover, a small amount of tartaric and glycol acids coming from the c-c bond cleavage due to non-protection of the anomeric carbon of D-glucose were also observed. |
| Databáze: | OpenAIRE |
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