Solution-grown 3D Cu2O networks for efficient solar water splitting

We report a facile and large-scale solution fabrication of cuprous oxide (Cu2O) nanowires nanorods and 3D porous Cu2O networks and their application as photocathodes for efficient solar water splitting. The growth mechanism and structural characterization of 3D porous Cu2O networks are studied in de...

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Veröffentlicht in:	Nanotechnology 2014-05, Vol.25 (20), p.205401-205401
Hauptverfasser:	Kargar, Alireza, Seena Partokia, Soheil, Tong Niu, Mu, Allameh, Paniz, Yang, Muchuan, May, Salomón, Cheung, Justin S, Sun, Ke, Xu, Ke, Wang, Deli
Format:	Artikel
Sprache:	eng
Schlagworte:	3D networks Cross-disciplinary physics: materials science rheology cuprous oxide (Cu Exact sciences and technology hydrogen production Materials science Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Nanotubes Physics Quantum wires solar water splitting solution growth
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Beschreibung
Zusammenfassung:	We report a facile and large-scale solution fabrication of cuprous oxide (Cu2O) nanowires nanorods and 3D porous Cu2O networks and their application as photocathodes for efficient solar water splitting. The growth mechanism and structural characterization of 3D porous Cu2O networks are studied in detail. The photocathodic performance of Cu2O electrodes prepared under different growth conditions is investigated in a pH-neutral medium. The porous Cu2O network photocathodes exhibit large photocurrent, high spectral photoresponse, and incident photon-to-current efficiency compared with Cu2O nanowire nanorod photoelectrodes. The photoelectrochemical stability of the 3D Cu2O network is significantly improved by applying multi-layer metal oxide protection.
ISSN:	0957-4484 1361-6528
DOI:	10.1088/0957-4484/25/20/205401