水热法制备多层核壳结构Gd2O3Eu^3+空心微球.pdf

第26卷第1期
化学学报
Vol 26 No. 1
2010年1月
CHINESE JOURNAL OF INORGANIC CHEMISTRY
35-39
水热法制备多层核壳结构Gd2O:Eu冰空心微球
刘桂霞*刘妹君董相廷王进贤胡延芳孙德
(长春理工大学化学与环境工程学院,长春132002
(长春工业大学化学工程学院,长春130012)
摘要:以稀土硝酸盐-葡萄糖的混合溶液作为前驱体,采用一步水热法和随后的热处理得到了多层核壳结构 Gd,0; Eu'空心微
球,并用X-射线行射(XRD)、场发射扫描电镜( FESEM)、透射电鏡(THEM)、X-射线能量色散光谱(FDS)和荧光光谱等测试手段对所
得样品进行了表征、结果表明:所得空心球样品为纯的立方相的Gd,0。具有規则的多层核売空心结构,空心球的直径在2~3
um左右、壁厚约为100m,并HG0:tu"空心球是由尺寸约为30mm的球形纳米颗粒自组装而成。样品中含有Gd、hiu、O元
素,该空心球样品具有强的Eu“的特征红光发射以及长的荧光寿命.可以用来作为时间分辨芡光标记物
关键词:水热法;Cd2O示Fu+;核壳结构;空心微球
中图分类号:06114:(0614.23
文献标识码:A
文章编号:1001-4861(201001-0035-05
Hydrothermal Synthesis of Multi-layer Core-shell Structura
Gd2o; Eu*Hollow Microspheres
LIU Gui-xia IIU Shu-jun DONG Xiang-ting WANG Jin-xian LIU Yan-fang SUN D
( School of Chemisty and Enrironmenta Engineering. hn hun Uniersity of Seienee wd echnolo hanghum 130022)
School ofchemical ngineering, Changchun lininersity of Technolog, Changchun 130012
Abstracts: Multi-layer core-shell structural Gd 0: Eu*hollow microspheres were synthesized by hydrothermal
method and subsequent heal-treatment using rare earth nitrate and glucose as precursors, and the samplcs were
haracterized by X-ray diffraction (RD). field emission scanning electron microscopy (FESEM), transmission
electron microscopy (TE M). X-ray energy dispersive spectra (EDS)and photoluminescence spectra. The results
showed that the hollow sphere samples are pure cubic Gd, 0a. the samples are multi-layer core-shell structural
hollow spheres with the diameler of 2-3 wm and the wall thickness of 100 nm, and Gd, 0, Eu*hollow spheres are
assembled by nanoparticles with the size of about 30 nm. The samples are composited by the element of Gd, Eu
and 0. The hollow sphere samples have strong red emission of Fu*and long lifetimes. which can be used as
time-resolved fluorescent label
Key words: hydrothermal mnethod: Gd: 0, Eu,; core-shell structure: hollow Microsphere
0引言
的物理化学性质,如光学、电学磁学性质,在如缓
释胶囊、药物传输、轻质填料、选择性吸附、催化等许
由于微米或纳米尺す空心球密度小、比表面大、多领域具有潜在的应用前景?。近年来具有不同组
球壁一般为纳米结构,往往表現出许多异于实心颗成的空心微球的研究引起了人们极大的兴趣,许多
收稿期:2009-09-14.收修改稿日期:2009-10-13
青林省科技发展计划(Na,20090528)资助项
通讯联系人、E-mail: liuguixia22 Yahoo con.Cn
第-作者:刘霞、女,35岁,博十,副教授:研究方向:无机固体化学、纳米材料与功能材料