Scalable and inexpensive strategy to fabricate CuO/ZnO nanowire heterojunction for efficient photoinduced water splitting

Scalable and inexpensive strategy to fabricate CuO/ZnO nanowire heterojunction for efficient... In this paper, highly efficient and stable CuO/ZnO nanowire (CuO/ZnO-nw) based photocathode was fabricated using a facile and scalable technique for application in photoelectrochemical water splitting. Electro-deposition of Cu film on FTO glass followed by a subsequent chemical oxidation and dip-coating methods was implemented to fabricate a p-type CuO/ZnO-nw heterostructure photoelectrode. The as-prepared CuO/ZnO-nw heterostructure consisted of a copper (II) oxide (CuO) nanowire covered by zinc oxide (ZnO) nanoparticle film serving as both protecting and charge transfer layer. We optimized the coating concentration and the number of layers to achieve enhanced p-type CuO/ZnO-nw photoelectrode material. The best photocathode material exhibited a maximum current of − 8.1 mAcm−2 at 0 versus RHE. The obtained photocurrent density was outstanding compared to other reported CuO-based heterostructure photoelectrodes. The enhancement in photocurrent performance originated from the combined effect of charge separation and the light absorption properties of the heterostructure photoelectrode. The result demonstrated a simple and scalable approach for the fabrication of enhanced CuO nanowire-based photoelectrode for the production of H2 using solar light. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science Springer Journals

Scalable and inexpensive strategy to fabricate CuO/ZnO nanowire heterojunction for efficient photoinduced water splitting

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Materials Science; Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics
ISSN
0022-2461
eISSN
1573-4803
D.O.I.
10.1007/s10853-017-1711-4
Publisher site
See Article on Publisher Site

Abstract

In this paper, highly efficient and stable CuO/ZnO nanowire (CuO/ZnO-nw) based photocathode was fabricated using a facile and scalable technique for application in photoelectrochemical water splitting. Electro-deposition of Cu film on FTO glass followed by a subsequent chemical oxidation and dip-coating methods was implemented to fabricate a p-type CuO/ZnO-nw heterostructure photoelectrode. The as-prepared CuO/ZnO-nw heterostructure consisted of a copper (II) oxide (CuO) nanowire covered by zinc oxide (ZnO) nanoparticle film serving as both protecting and charge transfer layer. We optimized the coating concentration and the number of layers to achieve enhanced p-type CuO/ZnO-nw photoelectrode material. The best photocathode material exhibited a maximum current of − 8.1 mAcm−2 at 0 versus RHE. The obtained photocurrent density was outstanding compared to other reported CuO-based heterostructure photoelectrodes. The enhancement in photocurrent performance originated from the combined effect of charge separation and the light absorption properties of the heterostructure photoelectrode. The result demonstrated a simple and scalable approach for the fabrication of enhanced CuO nanowire-based photoelectrode for the production of H2 using solar light.

Journal

Journal of Materials ScienceSpringer Journals

Published: Oct 31, 2017

References

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