Synthesis, characterization, and photocatalytic properties of ZnO/(La,Sr)CoO3 composite nanorod arrays

被引：64

作者：

Jian, Dunliang ^{[1
,2
]}

Gao, Pu-Xian ^{[1
,2
]}

Cai, Wenjie ^{[1
,2
]}

Allimi, Bamidele S. ^{[1
,2
]}

Alpay, S. Pamir ^{[1
,2
]}

Ding, Yong ^{[3
]}

Wang, Zhong Lin ^{[3
]}

Brooks, Christopher ^{[4
]}

机构：

[1] Univ Connecticut, Dept Chem Mat & Biomol Engn, Storrs, CT 06269 USA

[2] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA

[3] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[4] Honda Res Inst, Columbus, OH 43212 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 07期

关键词：

SENSITIZED SOLAR-CELLS; ALIGNED ZNO NANORODS; AQUEOUS-SOLUTIONS; GROWTH; OXIDES; NANOSTRUCTURES; ELECTRODES; NANOBELTS; NANOWIRES; SENSORS;

D O I：

10.1039/b817235h

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：

ZnO/(La, Sr) CoO3 (ZnO/LSCO) core-shell composite nanorod arrays have been successfully synthesized by a sequential combination process of a hydrothermal synthesis followed by a pulsed laser deposition (PLD) process (or a colloidal deposition process). Compared to the colloidal deposition process, PLD produces a more uniform and efficient deposition of continuous and mesoporous LSCO thin films onto ZnO nanorod arrays. During the PLD process, the deposited film uniformity was found to be dependent on the nanorod diameter, array density, and thus specific surface area of the nanorod arrays, in addition to the PLD deposition parameters. Field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) were used to investigate the surface morphologies and orientations of the composite nanorod arrays. With densely packed ZnO nanorod arrays as a unique support structure, the mesoporous LSCO thin film coated on top exhibited better photocatalytic properties than ZnO nanorod arrays and LSCO thin films deposited on flat Si substrates. With optimization of the structure, dimensionality, packing density, as well as the composition and interface structure, these unique composite nanoarchitectures could be a promising class of photocatalyst candidates for organic molecule degradation.

引用

页码：970 / 975

页数：6

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