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Pàgina inicial > Articles > Articles publicats > Cu2ZnSnS4-Ag2S nanoscale p-n heterostructures as sensitizers for photoelectrochemical water splitting |
Data: | 2015 |
Resum: | 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. |
Ajuts: | European Commission 284486 Ministerio de Economía y Competitividad ENE2013-46624-C4-3-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1638 |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió sotmesa a revisió |
Matèria: | Absorption property ; Environmental-friendly ; Nano-heterostructures ; Photocatalytic property ; Photocatalytic water splitting ; Photoelectrochemical water splitting ; Photogenerated electrons ; Separation efficiency |
Publicat a: | Langmuir, Vol. 31, issue 38 (Sep. 2015) , p. 10555-10561, ISSN 1520-5827 |
Preprint 24 p, 2.3 MB |