工艺参数对醇水均匀沉淀法制备纳米CeO2颗粒粒径的影响
Effect of Process Parameters on Size of Nanosized CeO2 Powders Prepared by Homogenous Precipitation Method in Mixed Alcohol-water Solvents
摘 要
在醇水混合体系中以乙醇为溶剂,六次甲基四胺(HMT)为缓释沉淀剂采用均匀沉淀法制备了纳米CeO2粉体,用透射电子显微镜(TEM)、X射线衍射仪(XRD)等方法对纳米颗粒进行了表征,研究了醇水比、反应温度、反应时间对纳米颗粒粒径的影响.结果表明:随着乙醇含量的增加,纳米颗粒粒径逐渐减小,随着反应温度的升高和反应时间的延长,纳米颗粒粒径增大.
醇水溶液
均匀沉淀
缓释沉淀剂
nanosized CeO2 particle
mixed alcohol-water solvent
homogenous precipitation
slow release precipitator
Abstract
Nanosized CeO2 particles were prepared by homogeneous precipitation method in mixed alcohol-water solvents with hexamethylene tetramine (HMT) as slow release precipitator.Effects of composition of mixed solvents,reaction temperature and time on size of the CeO2 nanoparticles were studied.As the content of alcohol increases,the particle size decreases.As the reaction temperature and time increases,the particle size increases.
中图分类号 TG146
所属栏目
基金项目 江苏省高技术研究计划资助项目(BG2004022)
收稿日期 2006/9/25
修改稿日期 2006/12/25
网络出版日期
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备注陈建清(1977-),女,江苏淮阴人,讲师,博士.
引用该论文: CHEN Jian-qing,CHEN Zhi-gang,LI Xia-zhang,LI Wei. Effect of Process Parameters on Size of Nanosized CeO2 Powders Prepared by Homogenous Precipitation Method in Mixed Alcohol-water Solvents[J]. Materials for mechancial engineering, 2007, 31(7): 73～75
陈建清,陈志刚,李霞章,李伟. 工艺参数对醇水均匀沉淀法制备纳米CeO2颗粒粒径的影响[J]. 机械工程材料, 2007, 31(7): 73～75
被引情况:
【1】李霞章,陆晓旺,陈志刚,陈丰,赵晓兵,张跃, "CeO2/ATP纳米复合材料的水热合成及其表征",机械工程材料 34, 77-79(2010)
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参考文献
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【6】CHEN Huey-Ing,CHANG Hung-yi.Homogeneous precipitation of cerium dioxide nanoparticles in alcohol/water mixed solvents[J].Colloids and Surfaces A:Physicochem Eng Aspects,2004,242:61-69.
【2】Michael Z-C Hu.Sol-gel and ultrafine particle formation via dielectric tuning of inorganic salt-alcohol-water solutions[J].Journal of Colloid and Interfaces Science,2000,222:20-36.
【3】FANG Chia-Szu,CHEN Yu-Wen.Preparation of titania particles by thermal hydrolysis of TiCl4 in n-propanol solution[J].Materials Chemistry and Physics,2003,78:739-745.
【4】CHEN Pei-lin,CHEN 1-wei.Reactive cerium (IV) oxide powders by the homogeneous precipitation method[J].J Am Ceram Soc,1993,76(6):15-83.
【5】李霞章,陈志刚,陈建清,等.醇水均匀沉淀法制备纳米CeO2粉体工艺及机理研究[J].机械工程材料,2006,30(3):68-70.
【6】CHEN Huey-Ing,CHANG Hung-yi.Homogeneous precipitation of cerium dioxide nanoparticles in alcohol/water mixed solvents[J].Colloids and Surfaces A:Physicochem Eng Aspects,2004,242:61-69.
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