Preparation of magnetic, luminescent and mesoporous hydroxyapatite nanospindles with high specific surface area

被引：0

作者：

Guo, Haifeng ^{[1
,2
]}

Zhou, Zhiqiang ^{[1
,3
]}

Ye, Feng ^{[1
]}

Li, Guoping ^{[2
]}

Zhang, Zhiheng ^{[2
]}

机构：

[1] Harbin Institute of Technology, Harbin,150001, China

[2] PetroChina Pipeline R and D Center, Langfang,065000, China

[3] Northeast Forestry University, Harbin,150040, China

来源：

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2014年 / 43卷 / 11期

关键词：

Transmission electron microscopy - X ray diffraction - Calcination - Gas adsorption - Scanning electron microscopy - Hematite - Luminescence - Samarium compounds - Drug delivery - Mesoporous materials;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Magnetic, luminescent and mesoporous nanospindles of Sm3+-Fe3+ co-doped hydroxyapatite (HAP) were prepared in the presence of monododecyl phosphate as templates. X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), vibration sample magnetometer (VMS), photoluminescence (PL) spectrum and nitrogen adsorption-desorption isotherm were used to characterize the products. The results show that the doped Sm3+ and Fe3+ existed in two forms: being solid-soluted in the HAP, or as oxides (amorphous Sm2O3 and γ-Fe2O3) nanoparticles embedded in the HAP. The doped HAP samples, both the as-dried and the calcined, display a good superparamagnetism. The calcination increases the magnetization from 13.45 emu/g to 19.51 emu/g. The calcined Sm3+-Fe3+ co-doped HAP has a spindle-like morphology with a length of 200~350 nm and a diameter of 50~100 nm, and possesses a large amount of mesopores with biomodal pore sizes of 3.64 and 9.01 nm. The biomodal mesoporous Sm3+-Fe3+ co-doped HAP nanospindles have a large pore volume of 0.3286 cm3/g and a high specific surface area of 153.52 m2/g. These make the mesoporous HAP nanospindles have a high drug payload ratio of 33.68wt% and a great application potential in drug delivery system. Copyright © 2014, Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.

引用

页码：2647 / 2651