Photocatalytic hydrogen production from alcohol aqueous solutions over TiO2-activated carbon composites decorated with Au and Pt
Nanocomposites based on titanium dioxide loaded with metal nanoparticles (Au and Pt) and activated carbon were synthesized and tested for hydrogen photogeneration in the gas phase using a mixture of alcohol-water (methanol, ethanol, and bioethanol). The photocatalysts were characterized by BET, XRD,...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/362580 |
| Acceso en línea: | https://hdl.handle.net/2117/362580 https://dx.doi.org/10.1016/j.jphotochem.2021.113726 |
| Access Level: | acceso abierto |
| Palabra clave: | Photocatalysis Hydrogen Platinum Gold Titanium dioxide Activated carbon Composite Hidrogen Fotocatàlisi Àrees temàtiques de la UPC::Enginyeria química |
| Sumario: | Nanocomposites based on titanium dioxide loaded with metal nanoparticles (Au and Pt) and activated carbon were synthesized and tested for hydrogen photogeneration in the gas phase using a mixture of alcohol-water (methanol, ethanol, and bioethanol). The photocatalysts were characterized by BET, XRD, Raman spectroscopy, XPS, UV-vis, and transient photocurrent response measurements. The influence of the metal, the ratio of titanium oxide to active carbon, and the type of alcohol used in the reaction mixture on hydrogen photogeneration were investigated. The highest hydrogen photoproduction rate was obtained on the photocatalyst containing a weight ratio of 1:1 of activated carbon:TiO2 and loaded with 1 wt. % Pt, which was also the sample showing the highest transient photocurrent response. |
|---|