Hiearchical ZnO rod-in-tube nano-architecture arrays produced via a two-step hydrothermal and ultrasonication process

Vertically aligned hierarchical ZnO rod-in-tube nano-architecture arrays are produced via a two-step process including an initial hydrothermal reaction followed by ultrasonication growth. The ZnO nanorod arrays grow firstly on FTO glass through a hydrothermal process and then act as templates for th...

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Bibliographic Details
Published in:Journal of materials chemistry 2011-01, Vol.21 (24), p.8709-8714
Main Authors: Luo, Qiu-Ping, Lei, Bing-Xin, Yu, Xiao-Yun, Kuang, Dai-Bin, Su, Cheng-Yong
Format: Article
Language:English
Subjects:
Arrays
Conversion
Hexamethylenetetramine
Nanocomposites
Nanomaterials
Nanostructure
Sodium
Zinc oxide
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Summary:Vertically aligned hierarchical ZnO rod-in-tube nano-architecture arrays are produced via a two-step process including an initial hydrothermal reaction followed by ultrasonication growth. The ZnO nanorod arrays grow firstly on FTO glass through a hydrothermal process and then act as templates for the fabrication of rod-in-tube nano-architectures during ultrasonication. The as-prepared ZnO rod-in-tube nano-architectures are assembled by the self-stacking of hexagonal nanorings along with 001 orientation of ZnO nanorod templates. Both hexamethylenetetramine and sodium citrate are found to play key roles in the formation of the novel ZnO rod-in-tube nano-architectures. The power conversion efficiency of dye-sensitized solar cell based on hierarchical ZnO rod-in-tube nano-architectures photoelectrode (0.91%) exhibits a significant improvement (75%) compared to that of ZnO nanorods (0.52%).
ISSN:0959-9428
1364-5501
DOI:10.1039/c1jm10871a