Solvothermal preparation and gas sensing properties of ZnO whiskers.
ZnO whiskers were prepared by a solvothermal process with Zn(OH)4(2-), cetyltrimethylammonium bromide (CTAB), n-amyl alcohol and n-hexane at 140 degrees C. The influence of preparation condition on the morphology of the resultant sample was investigated through change zinc salts, co-surfactants, surfactants, reaction temperature, and reaction time. Experimental results revealed that the morphology of as-obtained ZnO was affected strongly by the zinc salts and surfactants. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electron diffraction (ED). Results showed that ZnO whiskers had the diameters of 100-500 nm, the lengths of several microm, and grown along orientation of [0001]. The gas sensitivities of the as-prepared ZnO whiskers were detected. The results revealed that the ZnO whiskers had excellent potential application for gas sensor.
College of Materials and Chemical Engineering, Zhengzhou University of Light Industry, He'nan, Zhengzhou 450002, PR China.
Xu
X
Jiaqiang
Chen
C
Yuping
Shen
S
Jianian
D005740:Gases; D007091:Image Processing, Computer-Assisted; D008855:Microscopy, Electron, Scanning; D008958:Models, Molecular; D012995:Solubility; D013816:Thermodynamics; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
D005740:Gases; D015034:Zinc Oxide