文献类型：期刊文献

中文题名：焦磷酸钠对液相碳化法制备纳米碳酸钙形貌的影响

英文题名：Effects of Na_4P_2O_7 on Morphology of Calcium Carbonate Nanoparticles Synthesized by Liquid Carbonization Methods

作者：马洁[1];李春忠[1];陈雪花[1];朱孟钦[1]

机构：[1]华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海200237

年份：2005

卷号：21

期号：10

起止页码：1465

中文期刊名：无机化学学报

外文期刊名：Chinese Journal of Inorganic Chemistry

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金重点项目(No.20236020);上海市基础研究重大项目(No.04DZ14002);教育部科学研究重点项目(No.02159);上海市重点实验室专项基金(No.04DZ05622);上海市纳米科技基金项目(No.0452nm001;0352nm020)等资助

语种：中文

中文关键词：纳米碳酸钙;焦磷酸钠;成核与生长;液相碳化;颗粒形态

外文关键词：calcium carbonate nanoparticles; Na4P2O7; nucleation and growth; liquid phase carbonization; particle morphology

摘要：利用液相碳化法制备了不同形态的纳米碳酸钙颗粒,用TEM、XRD和IR等手段分析表征了纳米碳酸钙的形态和结构,研究了焦磷酸钠对液相碳化法制备纳米碳酸钙合成过程及颗粒形态结构的影响规律。结果表明反应温度是影响纳米碳酸钙形态的关键因素,温度升高时纳米碳酸钙由立方形转变为纺锤形。焦磷酸钠能够促进碳酸钙的晶体成核,抑制晶体生长,在碳化温度大30℃时生成链状和棒状的纳米碳酸钙。另外,还分析了链状和棒状纳米碳酸钙的形成机理。
The morphology and structure of CaCO3 nanoparticles synthesized by liquid carbonization method were analyzed by TEM, XRD and IR, etc., and the effect of Na4P2O7 on the process property and the morphology of CaCO3 nanoparticles was also investigated. The structure and morphology were strongly affected by the reaction temperature, and spindle-shaped particles were formed instead of cubic-shaped particles when the reaction temperature increased from 20 ℃ to 30 ℃. The nucleation rate increased and the growth rate decreased when Na4P2O7 was added to the reaction slurry. The chain and stick-shaped CaCO3 nanoparticles were formed when the reaction temperatures were higher than 30 ℃. The nucleation-growth mechanism for chain and stick-shipped nanoparticles is discussed.