Tungsten oxide-coated copper oxide nanowire arrays for enhanced activity and durability with photoelectrochemical water splitting

被引：58

作者：

Martinez-Garcia, Alejandro ^{[1
,2
]}

Vendra, Venkat Kalyan ^{[1
,2
]}

Sunkara, Swathi ^{[1
,2
]}

Haldankar, Poonum ^{[3
]}

Jasinski, Jacek ^{[2
]}

Sunkara, Mahendra K. ^{[1
,2
]}

机构：

[1] Univ Louisville, Dept Chem Engn, Louisville, KY 40292 USA

[2] Univ Louisville, Conn Ctr Renewable Energy Res, Louisville, KY 40292 USA

[3] DuPont Manual High Sch, Louisville, KY 40292 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 48期

基金：

美国国家科学基金会;

关键词：

METAL-OXIDE; PHOTOCATHODE; FILMS;

D O I：

10.1039/c3ta13912c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The deposition of crystalline CuWO4 and WO3 layers on copper oxide nanowire arrays resulted in a five-fold improvement of the photocurrent density (similar to 1.7 mA cm(-2) at -0.1 V vs. RHE) over titania-coated copper oxide NW arrays. The deposition of WO3 or CuWO4 reduced the CuO phase impurities in Cu2O. The improvement in the phase purity of the nanowire arrays led to a considerable enhancement in the resulting photoactivity. These protective coatings have been shown to play a dual role of marginally extending the durability of the electrode and promoting charge separation.

引用

页码：15235 / 15241

页数：7

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