Gd3＋/Eu3＋掺杂羟基磷灰石的自燃烧法制备与性能研究  

Auto-Combustion Synthesis and Properties of the Gd^(3+) and Eu^(3+) Doped Hydroxyapatite

作　　者：王俏[1] 刘志刚[1] 杨立荣[1] 白瑞英[1] 王春梅[1] 王静[1] 封孝信[1] 

机构地区：[1]河北联合大学材料科学与工程学院河北省无机非金属材料重点实验室,唐山063009

出　　处：《人工晶体学报》2014年第12期3258-3263,共6页Journal of Synthetic Crystals

基　　金：河北省自然科学基金(E2011209005)

摘　　要：以尿素为燃料,采用自燃烧法制备Gd3+/Eu3+掺杂羟基磷灰石(HAp∶Gd-Eu),并用X射线衍射仪、扫描电子显微镜、荧光分光光度计和振动磁强计等对所得样品进行表征。结果表明,自燃烧法获得的产物由不规则形貌和长条状的颗粒组成,平均粒径为216.2 nm。HAp∶Gd-Eu在紫外光(255 nm)和可见光(464 nm)激发下,具有较强的红光发射。Gd3+掺杂摩尔分数X(Gd3+)为5%,Eu3+掺杂摩尔分数X(Eu3+)为2%时,Gd3+敏化Eu3+发光,HAp∶Gd-Eu发光强度最大。增大X(Gd3+)为10%,由于浓度淬灭,Eu3+发光强度减小。HAp∶Gd-Eu发光强度随引燃温度升高,逐渐增大。HAp∶Gd-Eu具有一定的磁响应性。The Gd3 ＋and Eu3 ＋doped hydroxyapatite（ HAp ∶ Gd-Eu） was fabricated via an autocombustion method using urea as the fuel and was characterized by X-ray diffraction（ XRD）,scanning electron microscopy（ SEM）, photoluminescence spectra（ PL） and vibrating sample magnetometer（ VSM）. The results show that the obtained products exhibite irregular and strip-like morphologies with average particle diameter of about 216. 2 nm. When excitated by the light at 255 nm（ in the UV region）and at 464 nm（ in the visible region）,HAp ∶ Gd-Eu demonstrated red light emission. Gd3 ＋ions sensitized the5D0→7F2transition emission of Eu3 ＋in HAp,the PL emission intensity reached the maximum when X（ Gd3 ＋） was 5% and X（ Eu3 ＋） was 2%. Concentration quenching occurred when X（ Gd3 ＋） exceeded 10%,leading to the decrease of intensity of red light emission. Moreover,the PL emission intensity increased as the initial furnace temperatures increasing. Gd3 ＋doped hydroxyapatite have certain magnetic relatively.

关 键 词：自燃烧法 羟基磷灰石 发光 磁性 

分 类 号：TB34[一般工业技术—材料科学与工程]