Awakening Solar Water-Splitting Activity of ZnFe2O4 Nanorods by Hybrid Microwave Annealing
SCIE
SCOPUS
- Title
- Awakening Solar Water-Splitting Activity of ZnFe2O4 Nanorods by Hybrid Microwave Annealing
- Authors
- Kim, JH; Kim, JH; Jang, JW; Kim, JY; Choi, SH; Magesh, G; Lee, J; Lee, JS
- Date Issued
- 2015-03-18
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- 1D zinc ferrite (ZnFe2O4) photoanode is fabricated on an F-doped tin oxide substrate at a low temperature by an all-solution method. To activate the material for photoelectrochemical water splitting, the hybrid microwave annealing (HMA) is applied with graphite powder as a susceptor. Thus, HMA treatment of ZnFe2O4 photoanode synthesized at 550 degrees C increases the photocurrent density of water oxidation by 15 times. In contrast, the conventional thermal annealing at 800 degrees C brings only 1.7-fold increase. The various physical characterizations and hole scavenger photooxidation experiments with H2O2 reveal that the post-HMA treatment anneals the surface defect states and enhances the crystallinity. Hence, HMA treatment is effective to suppress charge-carrier recombination both on the surface and in the bulk of ZnFe2O4 to bring out its latent solar water-splitting activity.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26850
- DOI
- 10.1002/AENM.201401933
- ISSN
- 1614-6832
- Article Type
- Article
- Citation
- ADVANCED ENERGY MATERIALS, vol. 5, no. 6, 2015-03-18
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- There are no files associated with this item.
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