摘要
采用液相沉淀法,以硝酸铋[Bi(NO_3)_3]为添加剂来调控碳酸钙晶体的形状与大小,制备了海螺状碳酸钙粒子.通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)、热重分析仪(TGA)、原子荧光光谱仪(AFS)等对产物的结构和性能进行了表征.结果表明,在60℃条件下,添加20 mL浓度为2 g/L的Bi(NO_3)_3溶液可得到海螺状球霰石型碳酸钙粒子,且其荧光性明显增强.在碳酸钙的成核过程中,Bi^(3+)的加入起到了显著的调控作用.
Using liquid phase precipitation method,special conch-like calcium carbonate particles were prepared with bismuth nitrate as an additive at 60℃.The structure and performance of the resulting calcium carbonate were characterized by means of scanning electron microscopy（SEM）,X-ray diffraction（XRD）,thermogravimetric analysis（TGA） and atomic fluorescence spectroscopy（AFS）.The results showed that the fluorescence of the conch-like calcium carbonate particles was enhanced obviously.Bi^（3＋） played a significant controlling role in the nucleation process of calcium carbonate.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2017年第12期2144-2148,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:51404108)资助~~
关键词
碳酸钙
原位制备
沉淀反应
海螺状形貌
Calcium carbonate
In situ preparation
Precipitation reaction
Conch-like morphology
