A位掺杂纳米LaCoO_3的制备及其结构表征

A place doping nanometer LaCoO_3 and its structure characteristics

研究了硬脂酸合成法制备催化剂纳米LaCoO3及LaCoO3的A位系列掺杂产物,考察了不同掺杂物及其配比对A位掺杂产物结构的影响,对纳米LaCoO3及其A位系列掺杂产物进行了表征。结果表明,利用硬脂酸凝胶燃烧合成法可以制备催化剂纳米LaCoO3及LaCoO3的A位系列掺杂产物,其中Sr比Ba的掺杂效果好,没有相应掺杂元素的氧化物特征峰出现,且掺杂没有改变LaCoO3的钙钛矿结构。

The nano catalysts LaCoO3 were prepared on different ratio using the stearic acid synthesis, and the optimum ratio was found. According to the optimum ratio with La1-x Mx CoO3 （M = St, Ba）, the doping products of A series LaCoO3 were prepared. The nano LaCoO3 and its doping products of A series LaCoO3 were also characterized by X-ray diffraction （XRD） and infrared spectrometer （IR）.