Photocatalytic conversion of CO 2 into methanol over Cu-C/TiO 2 nanoparticles under UV light and natural sunlight
| Autor: | Mohamed I. Orif, Shahed U. M. Khan, Yasser A. Shaban, Radwan Kh. Al Farawati, Yasar N. Kavil, Mousa Zobidi |
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| Rok vydání: | 2017 |
| Předmět: |
General Chemical Engineering
General Physics and Astronomy Nanoparticle chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences Catalysis Titanium oxide chemistry.chemical_compound chemistry Titanium dioxide Photocatalysis Methanol 0210 nano-technology Carbon Electrochemical reduction of carbon dioxide |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 347:244-253 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2017.07.046 |
| Popis: | Photocatalytic reduction of carbon dioxide into methanol has been investigated by using Cu-loaded carbon modified titanium oxide (Cu-C/TiO2) nanoparticles under irradiation of UV and natural sunlight. Cu-C/TiO2 nanoparticles were prepared by sonicated sol–gel method. The synthesized photocatalyst exhibited maximum catalytic activity at the optimum dosage of 1.0 g L−1 of Cu-C/TiO2 having 3 wt% Cu content, giving maximum methanol yields of 2593 and 885 μmol g−1 after 5 h of illumination under UV and natural sunlight, respectively. The results indicated that the methanol yield produced by Cu-C/TiO2 was much higher than those of carbon modified titanium oxide (C/TiO2) and Degussa (P25-TiO2). This improvement was attributed to the reduced optical bandgap energy by C-modification, hindered electron-hole recombination by Cu-loading and the enhanced catalytic activity of Cu for the reduction of CO2 specifically to methanol. |
| Databáze: | OpenAIRE |
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