Synthesis of self-assembled needle-shaped calcium carbonate superstructures  

作　　者：ZHAO LiNa FENG JingDong WANG XiuYan WANG ZiChen 

机构地区：[1]College of Chemistry, Jilin Normal University, Siping 136000, China [2]Institute of Chemistry, Jilin University, Changchun 130023, China

出　　处：《Chinese Science Bulletin》2010年第20期2131-2135,共5页

基　　金：supported by "the Eleventh Five" Science Technology Research of Jilin Education Hall(2009-200)

摘　　要：Novel self-assembled calcium carbonate(CaCO3)crystals exhibiting the morphology of well-defined needles were synthesized by a simple precipitation reaction in the presence of octadecyl dihydrogen phosphate(ODP)as a crystal additive.The CaCO3 obtained by this method is hydrophobic,making it likely to be used widely in industry.The resulting products were characterized by powder X-ray diffraction,field emission scanning electron microscopy,Fourier transform infrared spectroscopy and contact angle experiments.The results indicated that ODP plays an important role in determining the structure,morphology and hydrophobicity of CaCO3 crystals.Novel self-assembled calcium carbonate （CaCO3） crystals exhibiting the morphology of well-defined needles were synthesized by a simple precipitation reaction in the presence of octadecyl dihydrogen phosphate （ODP） as a crystal additive. The CaCO3 ob- tained by this method is hydrophobic, making it likely to be used widely in industry. The resulting products were characterized by powder X-ray diffraction, field emission scanning electron microscopy, Fourier transform infrared spectroscopy and contact angle experiments. The results indicated that ODP plays an important role in determining the structure, morphology and hydrophobicity of CaCO3 crystals.

关 键 词：碳酸钙晶体 合成水晶 自组装 场发射扫描电子显微镜 傅立叶变换红外光谱仪 粉末X射线衍射 上盖 针状 

分 类 号：O614.231[理学—无机化学]