纳米CaCO3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 CaCO3 |
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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。 |
关键词: 碳酸钙 纳米微晶 晶格畸变 红外特性 |
基金项目: |
Abstract: In this paper, we report the results of nanocrystalline CaCO3 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 ν3 assimilation band. |
Keywords: CaCO3 nanocrystalline calcite distortion of crystal lattice infra-red behavior |
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水淼,岳林海,刘清,徐铸德,郑遗凡,丁成豪.纳米CaCO3微晶的晶格畸变和反常红外特性[J].无机化学学报,1999,15(6):715-720. |
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