以L-组氨酸为模板仿生合成针状纳米碳酸钙  

Biomimetic Synthesis of Needle-shaped Nano-CaCO_3 Particles with L-Histidine as the Template

作　　者：肖宇鹏[1] 赵旭[1] 赵丽娜[1] 吴晓霞[2] 雷洪[1] 任素霞[1] 王子忱[1] 

机构地区：[1]吉林大学化学学院,长春130012 [2]吉林大学分子酶学工程教育部重点实验室,长春130021

出　　处：《高等学校化学学报》2009年第3期530-533,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:50372025)资助

摘　　要：依据仿生合成原理,以L-组氨酸为有机基质,无水氯化钙和无水碳酸钠为原料,通过简单的复分解反应制备出了平均直径约为80 nm,长径比约为12∶1的针状纳米碳酸钙晶体.利用高分辨扫描电子显微镜(FESEM)、X射线衍射仪(XRD)、傅里叶红外光谱议(FTIR)对产物进行了表征,结果表明,在不添加有机基质的溶液中得到立方状微米级的碳酸钙晶体,添加L-组氨酸后得到针状纳米级的碳酸钙晶体,并对L-组氨酸在仿生合成针状纳米碳酸钙过程中的作用机理进行了初步探讨.Based on the theory of biomimetic synthesis, well dispersed needle-shaped nano-CaCO3 particles with an average width of 80 nm and a ratio of diameter to length about 1：12 were synthesized via a simple pre-cipitation reaction of Na/CO3 with CaCl2 in the presence of L-histidine. The products were characterized by field emission scanning electron microscopy （ FESEM ） , X-ray diffraction （ XRD ） , fourier transform infrared spectroscopy（FTIR） and whiteness meter. The results show that needle-shaped nano-CaCO3 crystals are ob- tained in the presence of L-histidine. Whereas, only cubic micron CaCO3 crystals were obtained without L-histidine. Due to its nano-size, high oil-absorbed value and high whiteness, the needle-shaped nano-CaCO3 particle was expected to be used as the filler for high-grade paper products, such as carbon paper, handker- chief paper, printing paper, etc.

关 键 词：针状纳米碳酸钙 仿生合成 L-组氨酸 吸油值 白度值 

分 类 号：O641[理学—物理化学]