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.
Jiaqiang
Xu
X
College of Materials and Chemical Engineering, Zhengzhou University of Light Industry, He'nan, Zhengzhou 450002, PR China.
Yuping
Chen
C
Jianian
Shen
S
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