Data for: "Optimization of Active Sites in TiO2–Cu Photocatalysts for H2 Generation via Cellulose Photo-Reforming"
En el fichero se incluyen los datos del trabajo experimental que han permitido escribir el artículo, el resumen de cuyo contenido se indica a continuación: The study pursues the optimization of active sites in TiO2-based photocatalysts modified with copper for hydrogen production via cellulose photo...
| Autores: | , , , , |
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| Tipo de recurso: | conjunto de datos |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Alicante (UA) |
| Repositorio: | RUA. Repositorio Institucional de la Universidad de Alicante |
| Idioma: | inglés |
| OAI Identifier: | oai:dnet:ruarepositor::f604e6c68437f2cb9ab256e27e2e6266 |
| Acceso en línea: | https://hdl.handle.net/10045/159666 |
| Access Level: | acceso abierto |
| Palabra clave: | Cellulose Copper Hydrogen Photocatalysis Titanium dioxide |
| Sumario: | En el fichero se incluyen los datos del trabajo experimental que han permitido escribir el artículo, el resumen de cuyo contenido se indica a continuación: The study pursues the optimization of active sites in TiO2-based photocatalysts modified with copper for hydrogen production via cellulose photo-reforming. Copper was incorporated, by impregnation, in the commercial titania P25 and in hydrothermally synthesized TiO2 which has a larger surface area and contains only anatase. The hydrothermal synthesis method was also employed for the one-pot preparation of TiO2–Cu photocatalysts. The effect of the copper loading was investigated in the three series of samples. Characterization techniques, including XPS, XRD, UV–vis, and PL spectroscopy, confirmed structural and electronic modifications induced by Cu incorporation, which would directly influence the photocatalytic efficiency. The activity tests demonstrated a significant enhancement in H₂ evolution upon Cu loading, being the photocatalysts prepared by the one-pot method the most active ones for hydrogen generation, with the highest H2/CO2 ratio and leading to the highest concentration of sugars and organic acids in solution, compared with the catalysts prepared by impregnation. The superior performance of these photocatalysts has been attributed to their increased surface area that allows a higher Cu loading with optimised distribution of active sites. In particular, the catalysts with 3 wt% Cu is the one exhibiting the highest efficiency, producing 2752 µmol·h⁻¹·gcat⁻¹, and being recyclable. |
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