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* Corresponding authors
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Department of Chemistry and Materials Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Japan
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Abstract
We prepared cupric oxide (CuO) photocathode films by dip coating from Cu(NO3)2 aqueous solutions containing poly(vinylpyrrolidone) (PVP). The addition of PVP modified the wettability of FTO glass substrates by the aqueous coating solutions, resulting in the formation of CuO coating layers on the substrates. The thermal decomposition of PVP by provided nanoscale pores in the resultant CuO films, and the porosity increased with increasing PVP nội dung. The porous structure thus obtained led to tát an efficient photocathodic reaction under UV and visible light illumination (wavelength: 300–800 nm). Highly porous CuO films prepared at [PVP] = 0.25 M exhibited the maximum incident photon-to-current efficiency (IPCE) values of 8.7% and 3.9% at 300 and 500 nm, respectively.
Supplementary files
Article information
- DOI
- https://doi.org/10.1039/C6RA26590A
- Article type
- Paper
- Submitted
- 10 Nov 2016
- Accepted
- 12 Mar 2017
- First published
- 24 Mar 2017
- This article is Open Access
-
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RSC Adv., 2017,7, 18014-18018
Permissions
Preparation of porous CuO films from Cu(NO3)2 aqueous solutions containing poly(vinylpyrrolidone) and their photocathodic properties
H. Uchiyama, K. Isobe and H. Kozuka, RSC Adv., 2017, 7, 18014 DOI: 10.1039/C6RA26590A
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