Precisely-controlled, a few layers of iron titanate inverse opal structure for enhanced photoelectrochemical water splitting
Cited 0 times inCited 0 times in
- Precisely-controlled, a few layers of iron titanate inverse opal structure for enhanced photoelectrochemical water splitting
- Zhang, Hemin; Park, Sung O.; Joo, Se Hun; Kim, Jin Hyun; Kwak, Sang Kyu; Lee, Jae Sung
- Issue Date
- Elsevier Ltd
- NANO ENERGY, v.62, pp.20 - 29
- Iron titanate (Fe 2 TiO 5 ) is a promising photoanode material due to a narrow band gap, appropriate band edges, robustness and abundance. However, its performance is limited because of its low conductivity and short hole diffusion length. Precisely controlled, a few Fe 2 TiO 5 layers of inverse opal structure (IOS) is fabricated via a layer-by-layer self-assembly and then treated by hybrid microwave annealing to produce a highly crystalline, yet IOS morphology-preserved Fe 2 TiO 5 photoanode film for solar water splitting. The highly transparent Fe 2 TiO 5 IOS film shows a greatly enhanced visible light harvesting, higher density of catalytically more active crystal planes, and many single crystalline nanoplates grown on the IOS architecture, relative to a reference planar film prepared under similar conditions. As a result, the optimized ‘exactly’ three Fe 2 TiO 5 layers IOS electrode with a sacrificial gallium oxide underlayer and a ternary (Ni 2 CoFe)OOH co-catalyst records 2.08 mA cm −2 at 1.23 V RHE under 1 sun (100 mW cm −2 ) irradiation, which is the highest photocurrent density produced by Fe 2 TiO 5 photoanode up to date.
- Appears in Collections:
- ECHE_Journal Papers
- Files in This Item:
- There are no files associated with this item.
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.