Ethylene glycol assisted hydrothermal synthesis of flower like ZnO architectures

被引：91

作者：

Ashoka, S. ^{[1
]}

Nagaraju, G. ^{[1
]}

Tharamani, C. N. ^{[2
]}

Chandrappa, G. T. ^{[1
]}

机构：

[1] Bangalore Univ, Dept Chem, Bangalore 560001, Karnataka, India

[2] Ruhr Univ Bochum, Dept Chem, Bochum, Germany

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 11期

关键词：

Hydrothermal; Ethylene glycol; ZnO flowers; Nanorods; Wurtzite structure; NANOSTRUCTURES; FABRICATION; MORPHOLOGY; NANORINGS; GROWTH; ARRAYS; ROUTE;

D O I：

10.1016/j.matlet.2009.01.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We describe a simple route to flower like ZnO architectures, based on the decomposition of zinc acetate precursor in water-ethylene glycol solution at 140-160 degrees C for 1d through hydrothermal method. The PXRD pattern reveals that the ZnO crystals are of hexagonal wurtzite structure. Ethylene glycol plays a key role on the morphology control of ZnO crystals. The SEM images of ZnO products prepared at 140 degrees C and 160 degrees C mainly exhibit flower like architecture composed of many rods. Whereas, the product prepared at 180 degrees C shows bunches accompanying a few number of free rods. TEM results reveal that the rods resemble swords with decrease in size from one end to another. From Raman spectrum, the peaks at 437 cm(-1), 382 cm(-1) and 411 cm(-1) correspond to E-2 (high), A(1) (TO) and E-1 (TO) of ZnO crystals respectively. The photoluminescence spectrum exhibits strong UV emission at similar to 397 nm, which comes from recombination of exciton. The possible mechanism for the formation of flower like ZnO architecture is proposed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：873 / 876

页数：4

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