摘要
以傅立叶变换红外光谱为表征手段,对合成的氟羟磷灰石通道离子进行研究。结果发现:F-离子替换羟基后,羟基在3573和634 cm-1的振动吸收带强度减弱,而在3542、678、715和736 cm-1左右出现新的振动谱带,且随F-离子含量不同出现规律性变化。新出现的谱带数目与群论推测的结果相符,表明该谱带属于羟基基团;羟基振动吸收带的变化,表明F-离子替换羟基的位置,形成[OH…F]氢键,使羟基的伸缩振动向低频偏移,弯曲振动向高频偏移。另外,通过3542-3573cm-1和715-736cm-1左右的谱带相对面积比与F-含量的关系,可为F-离子替换羟基行为提供一些依据。
The samples including hydroxyapatite and fluoridated hydroxyapatite with F/（OH- F） mole ratio from 0.1 to 0.9 were characterized by FTIR techniques. The results indicated that the intensity of hydroxyl vibration peaks at 3573 and 634cm^-1 weaken when F- ions substituted for hydroxyl. Meanwhile, new vibration bands appeared at 3542, 678, 715 and 736cm^-1. And they varied with the certain rule as content change of F^- ions. The amount of these new bands accorded with the result, which we applied group theory and speculated on the number of hydroxyl. The variety of hydroxyl vibration bands indicated that [OH…F] hydrogen - band was formed in apatite structure after F^- ions replaced the location of hydroxyl. As a result, hydroxyl stretching bands shifted towards lower frequency field and vibrational bands leaned to higher frequency field. In addition, according to the relationship between F^- content and relative area ratio of the spectral bands at 3542-3573cm^-1 and 715-736cm^-1, it could provide some important evidence for substitution behaviour between F^- ions and hydroxyl.
出处
《光散射学报》
2007年第1期86-90,共5页
The Journal of Light Scattering
基金
湖北省科技攻关计划项目(2006AA101c45)
关键词
氟羟磷灰石
通道离子
FTIR
群论
Fluor - hydroxyapatite
Channel - ions
FTIR
Group theory
作者简介
许涛（1981～），男，湖北省仙桃市人，硕士研究生。通讯联系人，E-mail：liuyu@mail．wit．edu．cn
