Porous NiTiO3/TiO2 nanostructures for photocatatalytic hydrogen evolution
We present a strategy to produce porous NiTiO/TiO nanostructures with excellent photocatalytic activity toward hydrogen generation. In a first step, nickel-doped TiO needle bundles were synthesized by a hydrothermal procedure. Through the sintering in air of these nanostructures, porous NiTiO/TiO he...
| Autores: | , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:218071 |
| Acceso en línea: | https://ddd.uab.cat/record/218071 https://dx.doi.org/urn:doi:10.1039/c9ta04763h |
| Access Level: | acceso abierto |
| Palabra clave: | Elongated nanostructure Excellent photocatalytic activities Hydrogen evolution Hydrogen generations Hydrogen production rate Hydrothermal procedure Optoelectronic properties |
| Sumario: | We present a strategy to produce porous NiTiO/TiO nanostructures with excellent photocatalytic activity toward hydrogen generation. In a first step, nickel-doped TiO needle bundles were synthesized by a hydrothermal procedure. Through the sintering in air of these nanostructures, porous NiTiO/TiO heterostructured rods were obtained. Alternatively, the annealing in argon of the nickel-doped TiO needle bundles resulted in NiO/TiO elongated nanostructures. Porous NiTiO/TiO structures were tested for hydrogen evolution in the presence of ethanol. Such porous heterostructures exhibited superior photocatalytic activity toward hydrogen generation, with hydrogen production rates up to 11.5 mmol h g at room temperature. This excellent performance is related here to the optoelectronic properties and geometric parameters of the material. |
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