Structure and Electric Conductivity of Ce-doped Bi2O3 Electrolyte Synthesized by Reverse Titration Chemical Coprecipitation
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2018年第5期
论文作者：孙尉杰 王茂华 CHEN Yong ZHANG Hanping
文章页码：1056 - 1061
摘 要：Ce-doped Bi2O3 nanopowders were prepared by reverse titration chemical coprecipitation from Bi3+and Ce4+containing aqueous solution.Techniques of X-ray diffraction（XRD）,transmission electron microscopic（TEM）and Fourier transform infrared spectroscopy（FTIR）were employed to characterize the as-synthesized materials.The XRD patterns indicated that the peaks can be easily indexed toβ-Bi2O3 and no diffraction peaks of Ce or other impurity phases were detected in the prepared samples.The calculated average crystalline size decreased from 31.72 to 11.96 nm when the Ce content increased from 1 wt%to 10 wt%.The morphology changed from flake-like into the spherical-like with increase in Ce content.The electric conductivity of Ce-doped Bi2O3 electrolyte was also investigated by two probe DC method.Conductivity analysis exhibited that the rate of conductivity increased with increasing Ce2+ratio,when the Ce concentration was up to 5 wt%,the as-synthesized Ce-doped Bi2O3 electrolyte showed the maximum value of conductivity(0.295 S?cm–1).
孙尉杰1，王茂华1,2，CHEN Yong2，ZHANG Hanping1
1. School of Petrochemical Engineering, Changzhou University2. Huaide College, Changzhou University
摘 要：Ce-doped Bi2O3 nanopowders were prepared by reverse titration chemical coprecipitation from Bi3+and Ce4+containing aqueous solution.Techniques of X-ray diffraction（XRD）,transmission electron microscopic（TEM）and Fourier transform infrared spectroscopy（FTIR）were employed to characterize the as-synthesized materials.The XRD patterns indicated that the peaks can be easily indexed toβ-Bi2O3 and no diffraction peaks of Ce or other impurity phases were detected in the prepared samples.The calculated average crystalline size decreased from 31.72 to 11.96 nm when the Ce content increased from 1 wt%to 10 wt%.The morphology changed from flake-like into the spherical-like with increase in Ce content.The electric conductivity of Ce-doped Bi2O3 electrolyte was also investigated by two probe DC method.Conductivity analysis exhibited that the rate of conductivity increased with increasing Ce2+ratio,when the Ce concentration was up to 5 wt%,the as-synthesized Ce-doped Bi2O3 electrolyte showed the maximum value of conductivity(0.295 S?cm–1).
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