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Jang, Ji-Wook
JW Energy Lab
Research Interests
  • Materials Science, Energy

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Photoelectrochemical water splitting over ordered honeycomb hematite electrodes stabilized by alumina shielding

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Title
Photoelectrochemical water splitting over ordered honeycomb hematite electrodes stabilized by alumina shielding
Other Titles
Photoelectrochemical water splitting over ordered honeycomb hematite electrodes stabilized by alumina shielding
Author
Jun, HwichanIm, BadroKim, Jae YoungIm, Yong-OJang, Ji-WookKim, Eun SunKim, Jae YulKang, Hyeon JoonHong, Suk JoonLee, Jae Sung
Keywords
ALPHA-FE2O3 NANOTUBE ARRAYS; THIN-FILMS; HYDROGEN-PRODUCTION; CARBON NANOTUBES; VISIBLE-LIGHT; CHARGE-TRANSFER; IRON-OXIDE; ANODIZATION; PHOTOOXIDATION; FABRICATION
Issue Date
2012-04
Publisher
ROYAL SOC CHEMISTRY
Citation
ENERGY & ENVIRONMENTAL SCIENCE, v.5, no.4, pp.6375 - 6382
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
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DOI
10.1039/c1ee02526k
ISSN
1754-5692
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ECHE_Journal Papers
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