期刊
CHEMSUSCHEM
卷 7, 期 2, 页码 421-424出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201301120
关键词
antimony-doped tin oxide; doping; hematite; nanostructures; water splitting
资金
- DFG
- DFG cluster of excellence Engineering of Advanced Materials (EAM)
- MEC through FPU
- Estancias Breves Programme
Host-guest systems such as hematite/SnO2 have attracted a great deal of interest as photoanodes for photoelectrochemical water splitting. In the present work we form an ordered porous tin oxide layer formed by self-organizing anodization of Sn films on a FTO substrate. Subsequently the anodic tin oxide nanostructure is doped with antimony (ATO) by a simple impregnation and annealing treatment, and then decorated with hematite using anodic deposition. Photoelectrochemical water splitting experiments show that compared to conventional SnO2 nanostructures, using a Sb doped nanochannel SnO2 as a host leads to a drastic increase of the water splitting photocurrent response up to 1.5 mA cm(-2) at 1.6 V (vs. RHE) in 1m KOH under AM 1.5 (100 mW cm(-2)) conditions compared to 0.04 mA cm(-2) for the non-Sb doped SnO2 scaffold.
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