Copper loaded HPfCNT/TiO2 ternary nanohybrids as green and robust catalysts for dehydrogenation of cyclohexanol under visible light
| Autor: | Sankaran Sugunan, Honey Mary Joseph |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Cyclohexanol Cyclohexanone chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Mechanics of Materials 0103 physical sciences Photocatalysis General Materials Science Dehydrogenation 0210 nano-technology Ternary operation Selectivity Nuclear chemistry |
| Zdroj: | Materials Science in Semiconductor Processing. 129:105784 |
| ISSN: | 1369-8001 |
| DOI: | 10.1016/j.mssp.2021.105784 |
| Popis: | Copper doped HPfCNT/TiO2 ternary photocatalysts were fabricated via a low cost, facile, sol-gel cum hydrothermal method at low temperature. Herein, we report energy efficient synthesis of cyclohexanone with high selectivity, through the photocatalytic dehydrogenation of cyclohexanol employing the green and robust ternary nanohybrid photocatalyst. The MWCNTs were functionalized employing the mild and green oxidant H2O2 (HPfCNT). The characterization by XPS spectra showed that Cu existed as +1 oxidation state. The monovalent copper species (as Cu2O) accounted for the greater conversion and better selectivity in the copper doped ternary hybrid system. The synergistic effects of copper and HPfCNTs with TiO2 imparted better visible light harvesting properties for the efficient photocatalytic dehydrogenation. It was evidenced from the activity studies and characterization employing UV–Vis DRS, PL spectra, XPS, BET analysis and elemental mapping. |
| Databáze: | OpenAIRE |
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