A TiO 2 ‐Co(terpyridine) 2 Photocatalyst for the Selective Oxidation of Cellulose to Formate Coupled to the Reduction of CO 2 to Syngas
| Autor: | Erwin Lam, Erwin Reisner |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Aqueous solution
010405 organic chemistry chemistry.chemical_element General Medicine General Chemistry 010402 general chemistry 01 natural sciences 7. Clean energy Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Photocatalysis Formate Cellulose Terpyridine Cobalt Syngas |
| Zdroj: | Angewandte Chemie International Edition. 60:23306-23312 |
| ISSN: | 1521-3773 1433-7851 |
| DOI: | 10.1002/anie.202108492 |
| Popis: | Immobilization of a phosphonated cobalt bis(terpyridine) catalyst on TiO2 nanoparticles generates a photocatalyst that allows coupling aqueous CO2 -to-syngas (CO and H2 ) reduction to selective oxidation of biomass-derived oxygenates or cellulose to formate. An enzymatic saccharification pre-treatment process is employed that enables the use of insoluble cellulose as an electron-donating substrate under benign aqueous conditions suitable for photocatalytic CO2 conversion. The hybrid photocatalyst consists of solely earth-abundant components, and its heterogeneous nature allows for reuse and operation in aqueous solution for several days at 25 °C, reaching a cellulose-to-formate conversion yield of 17 %. Thus, the proof-of-concept for valorizing two waste streams (CO2 and biomass) simultaneously into value-added chemicals through solar-driven catalysis is demonstrated. |
| Databáze: | OpenAIRE |
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