Preparation and gas-sensing property of ZnO nanorod-bundle thin films

ZnO nanorod-bundle thin films have been synthesized by a simple self-assembly method with the aid of F 127 (EO 106–PO 70–EO 106) triblock copolymer. Their morphologies and crystal structures were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM). SEM resu...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2008-05, Vol.62 (15), p.2307-2310
Main Authors: Ge, Chunqiao, Bai, Zikui, Hu, Mulin, Zeng, Dawen, Cai, Shuizhou, Xie, Changsheng
Format: Article
Language:English
Subjects:
Nanomaterials
Nanorod bundle
Self-assembly
Sensors
Sol–gel preparation
Zinc oxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ZnO nanorod-bundle thin films have been synthesized by a simple self-assembly method with the aid of F 127 (EO 106–PO 70–EO 106) triblock copolymer. Their morphologies and crystal structures were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM). SEM results showed that films were composed of a lot of bundles, which comprised nanorods with the diameter of about 10 nm. The possible formation mechanism of ZnO nanorod-bundle structures is proposed. Gas-sensing property of thin films, to alcohol, was also detected. It was also found that the sensitivity, to 100 ppm alcohol, of ZnO nanorod-bundle thin films was higher than that of ZnO nanoparticle thin films. The results showed that the triblock copolymer, served as the surfactants, could effectively control the morphologies and the aspect ratio of nano-ZnO, and then improve its gas-sensing property.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2007.11.073