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直接沉淀法合成Sc_2O_3纳米粉 被引量:1

Synthesis of Sc_2O_3 Nanopowders by Direct Precipitation Process
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摘要 研究了直接沉淀法合成Sc2O3纳米粉的工艺。以硝酸钪[Sc(NO3)3]为母盐,氨水(NH3.H2O)作沉淀剂,采用直接沉淀法合成出网状的前躯沉淀物,同时分析了前驱体的热分解过程。通过X射线衍射和红外光谱对前躯体的物相组成进行了定性分析,结果表明,该前躯沉淀物为γ-ScOOH.nH2O与NH4Sc3(SO4)2(OH)6.nH2O的两相混合物。前躯体经过微化处理后,在1 000℃的温度下煅烧,生成的Sc2O3纳米粉具有纯度较高、颗粒粒度小(40 nm)、粒度分布窄、近似球形Sc2O3的性能,但是粉体产生了轻微团聚的现象。 Synthesis of Sc2O3 nanopowders by direct precipitation approach has been investigated.The netlike precursor was synthesized taking ammonia as precipitant and scandium nitrate solution as mother liquor.Phase transformation of the precursor upon calcination was analyzed.The results show that Sc2O3 nanopowders calcined at 1 000 ℃ are spherical,ultrafine(40 nm),and of high purity and narrow particle size distribution.
出处 《中国材料进展》 CAS CSCD 2011年第4期54-57,共4页 Materials China
基金 国家自然科学基金资助项目(50672014) 国家高技术研究发展计划资助项目(2007AA06Z116)
关键词 Sc2O3 纳米粉 直接沉淀法 微化处理 硝酸盐 Sc2O3 nanopowders direct precipitation process micro processing nitrate
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