| Fe3O4/CdTe磁性荧光纳米复合物的逐步杂凝聚法合成及其表征 |
| |
| 引用本文： | 陈恭,王秀玲,刘勇健,顾银君.Fe3O4/CdTe磁性荧光纳米复合物的逐步杂凝聚法合成及其表征[J].材料导报,2012,26(10):49-53. |
| |
| 作者姓名： | 陈恭 王秀玲 刘勇健 顾银君 |
| |
| 作者单位： | 苏州科技学院化学与生物工程学院江苏省环境功能材料重点实验室,苏州,215009 |
| |
| 基金项目： | 国家自然科学基金青年科学基金(51103120);苏州科技学院2011年度研究生科研创新计划项目(SKCX11S_056) |
| |
| 摘 要： | 采用逐步杂凝聚法合成了Fe3O4/CdTe磁性荧光纳米复合物.以化学共沉淀法制备Fe3O4纳米颗粒,经油酸修饰后分散在表面活性剂中形成磁流体.CdTe量子点以巯基乙酸为稳定剂制得.最后以聚乙烯亚胺(PEI)为联接剂,成功制备了Fe3 O4 /CdTe磁性荧光双功能纳米复合物颗粒.该复合物颗粒平均尺寸为(30±5)nm,荧光产率为0.186,饱和磁化强度为15.745emu/g,该纳米粒子既具有优异的荧光特性,也具有较强的超顺磁性.
|
| 关 键 词： | 逐步杂凝聚法 CdTe量子点 磁流体 双功能纳米复合物颗粒 |
Synthesis of Fe3O4/CdTe Magnetic Fluorescent Nanocomposites by a Stepwise Heterocoagulation Approach and Their Characterization |
| |
| CHEN Gong
,
WANG Xiuling
,
LIU Yongjian
,
GU Yinjun.Synthesis of Fe3O4/CdTe Magnetic Fluorescent Nanocomposites by a Stepwise Heterocoagulation Approach and Their Characterization[J].Materials Review,2012,26(10):49-53. |
| |
| Authors: | CHEN Gong WANG Xiuling LIU Yongjian GU Yinjun |
| |
| Affiliation: | (Environmental and Functional Materials Key Laboratory of Jiangsu Province,Department of Chemical and Biological Engineering, Suzhou University of Science and Technology,Suzhou 215009) |
| |
| Abstract: | Fe3O4/CdTe magnetic fluorescent nanocomposites were synthesized by the method of stepwise he-terocoagulation.Fe3O4 magnetic nanoparticles were prepared by hydrothermal coprecipitation of ferric and ferrous ions.The as-prepared nanoparticles were modified with oleic acid,and then formed the magnetic ferrofluids emulsified in the water with surfactants.The CdTe quantum dots synthesized using mercaptoacetic acid as stabilizer had the thiol groups on the surface of them.At last,Fe3O4/CdTe magnetic/luminescent bifunctional nanocomposites were prepared using polyethyleneimine(PEI) as a crosslinker successfully.The as-prepared composites have a typical diameter of(30±5)nm and the fluorescence quantum yield is 0.186,saturation magnetic susceptibility is 15.745emu/g.They retains the strong photoluminescence effect of CdTe quantum dots and also exhibits a typical superparamagnetic behavior of Fe3O4 nanoparticles. |
| |
| Keywords: | stepwise heterocoagulation CdTe quantum dots magnetic ferrofluids bifunctional nanocompo-sites |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
