摘要
以Ce(NO3)3·6H2O为铈源,L-半胱氨酸为表面活性剂,NaOH为碱源通过水热法制备了前驱体Ce2O(CO3)2·xH2O,经煅烧后得到了蝴蝶结形貌的CeO2粉体,采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对所制得产物的晶相和形貌进行了表征,并分析了不同反应条件对产物形貌的影响。结果表明:水热反应温度180℃反应24 h制备出蝴蝶结形CeO2的前驱体,经400℃煅烧1 h,获得长约14μm,两端呈分叉多枝结构的CeO2粉体;随着反应时间的延长,产物经历了由椭球形向蝴蝶结形的转变。
The precursor of Ce2O（CO3 ）2 · xH2O was prepared by hydrothermal process using Ce （NO3 ）3 · 6H2O, L-eysteine and NaOH as source materials, the bow-like CeO2 was obtained after calcining. The product was characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, the influence of reaction conditions on the product morphology was investigated. The results indicate that the product is bow- like precursor when hydrothermal reaction at 180 ℃ for 24 h, bow-like CeO2 is obtained after calcining at 400 ℃for 1 h. The final product is 14 μm in length, the ends of the sample are multi-branch structure; the product was experienced the transformation form ellipsoid to bow shaoed with time oassed.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2014年第2期388-393,共6页
Journal of Synthetic Crystals
基金
黑龙江省自然科学基金(B201203)
黑龙江省教育厅科学技术研究项目(12521427)
黑龙江省博士后资助项目(LBH-Z11038)
