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Low temperature synthesis and characterization of single phase multi-component fluorite oxide nanoparticle sols

机译:低温合成与单相多组分氟铝氧化物纳米粒子溶胶的表征

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We report for the first time a simple, scalable approach for the synthesis of single-phase multi-component fluorite oxide nanoparticle sols: Gd _(0.2) La _(0.2) Y _(0.2) Hf _(0.2) Zr _(0.2) O _(2) (GLYHZ) and Gd _(0.2) La _(0.2) Ce _(0.2) Hf _(0.2) Zr _(0.2) O _(2) (GLCHZ) using chemical co-precipitation followed by peptization in acidic medium under mild conditions (≤80 °C). High resolution transmission electron microscopy (HRTEM) along with selected area electron diffraction (SAED) studies confirm fully crystalline single-phase cubic fluorite nanoparticles having a particle size of about 2–3 nm with a narrow size distribution was obtained. The powder X-ray diffraction (XRD) and Rietveld refinement studies of samples calcined at 500 °C for 4 hours confirm a single phase solid solution and a lack of secondary phases.
机译:我们首次报告一种简单,可扩展的单相多组分氟镁氧化物纳米颗粒溶胶的方法:Gd _(0.2)La _(0.2)y _(0.2)Hf _(0.2)Zr _(0.2 )O _(2)(甘露出)和Gd _(0.2)La _(0.2)CE _(0.2)HF _(0.2)Zr _(0.2)o _(2)(GlCHz)使用化学共沉淀然后在温和条件下酸性培养基(≤80°C)染色。高分辨率透射电子显微镜(HRTEM)以及选定的区域电子衍射(SAED)研究确认了具有窄尺寸分布的粒径为约2-3nm的完全结晶单相立方萤石纳米颗粒。粉末X射线衍射(XRD)和RIETVELD细化研究在500℃下煅烧4小时的样品确认单相固溶溶液和缺少二次相。

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