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ZnO/CuO photoelectrode with n-p heterogeneous structure for photoelectrocatalytic oxidation of formaldehyde.
- Source :
-
Applied Surface Science . Oct2018, Vol. 455, p181-186. 6p. - Publication Year :
- 2018
-
Abstract
- We developed a novel ZnO/CuO heterogeneous structure for photoelectrochemical (PEC) cells, which was fabricated with CuO attached onto ZnO nanorod (NR) arrays by an electrochemical deposition method. CuO as a p-type and narrow band-gap sensitizer can make the n-type ZnO respond to visible light and promote the separation of photogenerated charge carriers by building a p-n heterogeneous structure. The photoelectric conversion and photocatalytic formaldehyde oxidation of ZnO/CuO were investigated in detail under simulated sunlight (AM 1.5) in comparison with single ZnO NRs and CuO film. In addition, the energy level diagram of the p-n heterogeneous interface was revealed according to a theoretical analysis on the basis of the flat band potential results. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FORMALDEHYDE
*NANORODS
*BAND gaps
*VISIBLE spectra
*PHOTOCATALYTIC oxidation
Subjects
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 455
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 130689512
- Full Text :
- https://doi.org/10.1016/j.apsusc.2018.05.196