Photoelectrochemical enhancement of ZnO/BiVO4/ZnFe2O4/rare earth oxide hetero-nanostructures
SCIE
SCOPUS
- Title
- Photoelectrochemical enhancement of ZnO/BiVO4/ZnFe2O4/rare earth oxide hetero-nanostructures
- Authors
- She, X.; Zhang, Z.; Baek, M.; Yong, K.
- Date Issued
- 2018-01-31
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Over the decades, researchers have made great efforts to turn the world into a cleaner place through efficient recycling of industrial waste and developing of green energy. Here we demonstrate a prototype heterostructure photoelectrochemical (PEC) cell fabricated using recycled industrial waste. ZnFe2O4 (ZFO) nanorod (NR) clusters were synthesized on the BiVO4@ZnO hetero-nanostructures using recycled rare earth oxide (REO) slags as Fe source. The NR-based PEC cell exhibited a significantly enhanced photon to hydrogen conversion efficiency over the entire UV and visible spectrum. Further study demonstrates that the photo-carrier separation and migration processes can be facilitated by the cascade band alignment of the heterostructure and the clustered nanostructure network. In addition, the life-time of the photo-carriers can be enhanced by the REO passivation layer, leading to a further increased PEC performance. Our results present a novel approach for high efficiency PEC cells, and offer great promises to the efficient recycling of industrial waste for clean renewable energy applications. ? 2017 Elsevier B.V.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50991
- DOI
- 10.1016/j.apsusc.2017.06.257
- ISSN
- 0169-4332
- Article Type
- Article
- Citation
- APPLIED SURFACE SCIENCE, vol. 429, page. 29 - 36, 2018-01-31
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