Cu2ZnSnS4-Ag2S nanoscale p-n heterostructures as sensitizers for photoelectrochemical water splitting
A cation exchange-based route was used to produce CuZnSnS (CZTS)-AgS nanoparticles with controlled composition. We report a detailed study of the formation of such CZTS-AgS nanoheterostructures and of their photocatalytic properties. When compared to pure CZTS, the use of nanoscale p-n heterostructu...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:270825 |
| Acceso en línea: | https://ddd.uab.cat/record/270825 https://dx.doi.org/urn:doi:10.1021/acs.langmuir.5b02490 |
| Access Level: | acceso abierto |
| Palabra clave: | Absorption property Environmental-friendly Nano-heterostructures Photocatalytic property Photocatalytic water splitting Photoelectrochemical water splitting Photogenerated electrons Separation efficiency |
| Sumario: | A cation exchange-based route was used to produce CuZnSnS (CZTS)-AgS nanoparticles with controlled composition. We report a detailed study of the formation of such CZTS-AgS nanoheterostructures and of their photocatalytic properties. When compared to pure CZTS, the use of nanoscale p-n heterostructures as light absorbers for photocatalytic water splitting provides superior photocurrents. We associate this experimental fact to a higher separation efficiency of the photogenerated electron-hole pairs. We believe this and other type-II nanoheterostructures will open the door to the use of CZTS, with excellent light absorption properties and made of abundant and environmental friendly elements, to the field of photocatalysis. |
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