title: CO2-mediated synthesis of ZnO nanorods and their application in sensing ethanol vapor.
abstract: High-purity ZnO nanorods have been synthesized via a two-step route using zinc acetate as a precursor without any surfactant and additive. In this method, ZnCO3 fibers were first formed in the CO2-ethanol solution, which directed the formation of ZnO nanorods by subsequent treatment in KOH aqueous solution. The as-prepared nanorods were fully characterized by transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and Fourier transform Infrared spectroscopy. It was found that the as-obtained ZnO nanorods were single crystals with uniform diameter around 150 nm and length of 4 microm. The nanorod crystals were prismatic with hexagonal cross sections, consistent with the wurtzite lattice structure. Moreover, the sensing properties of the as-prepared ZnO nanorods were also investigated. It was demonstrated that they exhibited good performance for detecting ethanol vapor even at 380 and 250 degrees C.
authors: Beijing National Laboratory for Molecular Sciences (BNLMS), Centre for Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China.
authors: Guimin
authors: G
authors: An
authors: Zhenyu
authors: Z
authors: Sun
authors: Yang
authors: Y
authors: Zhang
authors: Kunlun
authors: K
authors: Ding
authors: Yun
authors: Y
authors: Xie
authors: Ranting
authors: R
authors: Tao
authors: Hongye
authors: H
authors: Zhang
authors: Zhimin
authors: Z
authors: Liu