论文部分内容阅读
ZnO nanocrystals were prepared by a direct current electrochemical deposition process under 3.0V working voltage and 30A/m~2 current density using zinc sulfate as raw materials.The nanocrystals were characterized by X-ray diffraction (XRD)and transmission electron microscopy(TEM).The results indicated that the nanocrystals are hexagonal wurtzite ZnO with particle size range of 25nm～40nm without any treating.Gas sensing properties of the sensors were tested by mixing a gas in air at static state;the tested results showed that the sensors based on nanocrystalline ZnO had satisfied gas sensing properties to H_2S gas at rather low temperature.
ZnO nanocrystals were prepared by a direct current electrochemical deposition process under 3.0V working voltage and 30 A / m ~ 2 current density using zinc sulfate as raw materials. The nanocrystals were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) The results indicated that the nanocrystals are hexagonal wurtzite ZnO with particle size range of 25 nm to 40 nm without any treatment. Gas sensing properties of the sensors were tested by mixing a gas in air at static state; the tested results showed that the sensors based on nanocrystalline ZnO had satisfied gas sensing properties to H_2S gas at rather low temperature.