微孔纳米羟基磷灰石的水热合成与结构表征  

Synthesize and characterization of microporous hydroxyapatite crystal by hydrothermal method

作　　者：徐惠[1] 李春雷[1] 张斯凡[1] 苟国俊[1] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《化学研究与应用》2008年第11期1405-1409,共5页Chemical Research and Application

基　　金：国家自然科学基金(50602020)资助;甘肃省自然基金(2007GS05348)资助

摘　　要：以Ca（NO3）2.4H2O,P2O5为原料,水-乙醇体系为溶剂,在碱性介质中,采用水热法合成微孔羟基磷灰石,并考察了水热温度、时间对晶体结构的影响。通过X-射线衍射（XRD）、红外光谱（FTIR）、热分析（TG/DTA）、透射电镜（TEM）等检测手段对HAP的晶相、化学组成和形貌进行了表征和分析,结果表明：160℃下水热8小时,可得到粒径为70×167nm的六方柱状微孔纳米HAP晶体,晶体表面孔径大约为1-2nm,孔密度大约为3×10^9个/cm^2。In this investigation, microporous hydroxyapatite crystal has been synthesized using calcium nitrate and phosphorus oxide in water/ethanol solution by hydrothermal method. In order to obtain microporous materials with surface areas and pore density as high as possible,the intluence of several synthetic parameters has been analyzed. The characterization results of XRD, FTIR,TGDTA and TEM indicates that the powder after hydrothermal treatment at 160℃ for 8h exhibits single phase of HAP,and show that hydroxyapatite crystal is the hexagonal-dipyramidal phase（70 × 167nm） ,and there are micropores（ 1 × 2nm） in the crystal planes with hole density about 3 × 10^9/cm2. These pores might be important for biomedical applications as they could enhance the adhesion between the natural andsynthe sized bone apatite.

关 键 词：微孔 羟基磷灰石 水热合成 晶体 

分 类 号：TB321[一般工业技术—材料科学与工程]