Enhanced Photoelectrochemical Water Splitting Efficiency of a Hematite-Ordered Sb:SnO2 Host-Guest System

被引：54

作者：

Wang, Lei ^{[1
]}

Palacios-Padros, Anna ^{[1
,2
]}

Kirchgeorg, Robin ^{[1
]}

Tighineanu, Alexei ^{[1
]}

Schmuki, Patrik ^{[1
,3
]}

机构：

[1] WW4 LKO Univ Erlangen Nuremburg, Dept Mat Sci & Engn, D-91058 Erlangen, Germany

[2] Univ Barcelona, Dept Phys Chem, E-08028 Barcelona, Spain

[3] King Abdulaziz Univ, Dept Chem, Jeddah 21413, Saudi Arabia

来源：

CHEMSUSCHEM | 2014年 / 7卷 / 02期

关键词：

antimony-doped tin oxide; doping; hematite; nanostructures; water splitting; THIN-FILMS; TIN OXIDE; ALPHA-FE2O3; PHOTOELECTRODES; FEATURE SIZE; IRON-OXIDE; TRANSPARENT; PHOTOANODES; PERFORMANCE;

D O I：

10.1002/cssc.201301120

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：421 / 424

页数：4

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