Photoelectrochemical water splitting over ordered honeycomb hematite electrodes stabilized by alumina shielding
SCIE
SCOPUS
- Title
- Photoelectrochemical water splitting over ordered honeycomb hematite electrodes stabilized by alumina shielding
- Authors
- Hwichan Jun; Badro Im; Jae Yul Kim; Yong-O Im; Ji-Wook Jang; Eun Sun Kim; Kim, JY; Hyun Joon Kang; Suk Joon Hong; Lee, JS
- Date Issued
- 2012-04
- Publisher
- Royal Society of Chemistry
- Abstract
- Highly ordered, honeycomb-like iron oxide (hematite) films were fabricated by double-step anodic oxidation of iron foil. The honeycomb structure obtained by double step anodization was found to be more effective in producing a large area film with homogeneous pore distribution compared to nanotubes fabricated by the conventional single-step anodic oxidation process. To prevent agglomeration of the hematite film during the annealing process, a thin alumina layer was deposited on the hematite film surface by atomic layer deposition. With this alumina shielding and subsequent removal by alkaline treatment, one-dimensional (1-D) hematite nanostructure was preserved perfectly after annealing at 550 degrees C. This highly ordered 1-D nanostructure film showed much enhanced photoelectrochemical cell performances relative to hematite films with low degrees of ordering.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/10145
- DOI
- 10.1039/C1EE02526K
- ISSN
- 1754-5692
- Article Type
- Article
- Citation
- ENERGY & ENVIRONMENTAL SCIENCE, vol. 5, no. 4, page. 6375 - 6382, 2012-04
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