Hydrogen production via water splitting using different Au@ZnO catalysts under UV–vis irradiation
| Autor: | Abniel Machín, Francisco Márquez, María Cotto, Sergio Pinilla, Loraine Soto-Vázquez, Edgard Resto, Carmen Morant, Juan C. Arango, José Duconge |
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| Rok vydání: | 2018 |
| Předmět: |
Hydrogen
General Chemical Engineering General Physics and Astronomy Nanoparticle chemistry.chemical_element 02 engineering and technology General Chemistry Zinc 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis chemistry Colloidal gold Photocatalysis Water splitting 0210 nano-technology Hydrogen production Nuclear chemistry |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 353:385-394 |
| ISSN: | 1010-6030 |
| Popis: | The hydrogen production via water splitting of zinc oxide composites was studied by incorporating different amounts of gold nanoparticles (1 wt.%, 3 wt.%, 5 wt.%, 10 wt.%) on the surface of synthesized zinc oxide nanowires (ZnO NWs), and zinc oxide nanoparticles (ZnO NPs), along with a commercial form (commercial ZnO) for comparison purposes. The highest amount of hydrogen produced (853 μmol/hg) was reported by ZnO NWs with a gold loading of 10 wt.% at a wavelength of 400 nm. In the case of ZnO NPs and commercial ZnO, the highest amount of hydrogen produced was 709 μmol/hg and 559 μmol/hg, respectively, also with a gold loading of 10 wt.%. The photocatalytic activity when gold was incorporated was doubled in ZnO NWs, 8.2 times for the ZnO NPs and 6 times for the commercial ZnO. The catalysts proved to have high catalytic activity for the production of hydrogen by water splitting under UV–vis light, and depend both on the amount of gold deposited and the surface area of the support. |
| Databáze: | OpenAIRE |
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