纳米CaCO_3微晶的晶格畸变和反常红外特性  

DISTORTION OF CRYSTAL LATTICE AND ABNORMAL INFRA RED BEHAVIOR IN NANOCRYSTALLINE CaCO_3

作　　者：水淼[1] 岳林海[1] 刘清[1] 徐铸德[1] 郑遗凡[2] 丁成豪 

机构地区：[1]浙江大学化学系,杭州310027 [2]杭州石油地质研究所,杭州310023

出　　处：《无机化学学报》1999年第6期715-720,共6页Chinese Journal of Inorganic Chemistry

摘　　要：利用ＴＥＭ、ＳＥＭ、Ｘ射线衍射（ＸＲＤ）和Ｖｏｉｇｔ函数单峰分析法讨论了纳米ＣａＣＯ３ 微晶结构，解释了纳米ＣａＣＯ３ 微晶的反常红外吸收特性，并认为微结构中的尺寸效应使得纳米ＣａＣＯ３ 晶格中存在较大的畸变应力，从而引起了碳酸钙微晶的红外ν３ 吸收峰有约４０ ｃｍ － １的蓝移和明显窄化。In this paper, we report the results of nanocrystalline CaCO 3 by using TEM, SEM, X ray diffraction (XRD) and Voigt functioin analysis, and furthermore, give an explanation to the abnormal infra red behavior of nano particle calcite. We suppose that the size effect that exists in micro structure causes the intensive stress in the crystal structure of calcite, and which results in an 40 cm -1 blue shift and obvious narrowness of the ν 3 assimilation band.$$$$

关 键 词：磷酸钙 纳米微晶 晶格畸变 红外特性 晶体 

分 类 号：O614.231[理学—无机化学]