CAJ | 학술논문

采用水热法制备铈稳定钪掺杂氧化锆的超细纳米晶。利用X射线衍射仪、傅里叶红外光谱仪分别研究水热产物的物相和结构，结合热重-差热分析仪分析水热反应过程物相与能量的变化，通过透射电子显微镜研究pH值对水热产物颗粒大小与聚集状态的影响。结果表明，在200℃、pH=8、反应时间为3 h时，得到的水热产物为立方单相，粒径约为4 nm。当pH值升高到10时，立方相的颗粒出现长大和团聚现象，平均粒径约为6 nm。
채용수열법제비시은정항참잡양화고적초세납미정。이용X사선연사의、부리협홍외광보의분별연구수열산물적물상화결구，결합열중-차열분석의분석수열반응과정물상여능량적변화，통과투사전자현미경연구pH치대수열산물과립대소여취집상태적영향。결과표명，재200℃、pH=8、반응시간위3 h시，득도적수열산물위립방단상，립경약위4 nm。당pH치승고도10시，립방상적과립출현장대화단취현상，평균립경약위6 nm。
Ultra-fine cerium-stabilized scandium-doped zirconia nanocrystalline was prepared by hydrothermal method. The phase and structure of synthesized powders were characterized by XRD and FT-IR respectively. Hydrothermal reactions were investigated by TG-DSC analysis. The effect of pH on particle size and state of aggregation was studied by TEM. The results show that the cubic nanocrystallines with average diameters of 4 nm are obtained when precursors are treated hydrothermally at 200 ℃ for 3 h with pH of 8. When pH increases to 10, particles become agglomerated and the average sizes grow to 6 nm.