A magnetic organic-inorganic composite: Synthesis and characterization of magnetic 5-aminosalicylic acid intercalated layered double hydroxides

被引：91

作者：

Zhang, H ^{[1
]}

Zou, K ^{[1
]}

Sun, H ^{[1
]}

Duan, X ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Minist Educ, Key Lab Sci & Technol Controllable Chem React, Beijing 100029, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2005年 / 178卷 / 11期

基金：

中国国家自然科学基金;

关键词：

layered double hydroxides; magnetic materials; coprecipitation; X-ray diffraction; 5-asa intercalation; magnetic properties;

D O I：

10.1016/j.jssc.2005.09.008

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A core-shell structured magnetic layered organic inorganic material involving 5-ammosalicylic acid (5-ASA) intercalated Zn-Al layered double hydroxides (LDHs) and magnesium ferrite (MgFe2O4) is assembled by a coprecipitation method. The powder X-ray diffraction results show the coexistence of the clear but weak diffractions of MgFe2O4 and ordered relatively stronger reflections of 5-ASA intercalated LDHs. The TEM image of magnetic 5-ASA intercalated LDHs reveals that the LDHs layer covers the MgFe2O4 particles or their aggregates with particle size of 50-80 nm. The vibration sample magnetization (VSM) measurements exhibit the increase in saturation magnetization of magnetic 5-ASA intercalated LDHs samples with increasing amount of magnetic core. The XPS analyses account for a majority of Zn, Al and O atoms on the surface of magnetic particles. It is suggested that the magnetic core MgFe2O4 was coated with LDHs layer probably through Zn-O-Mg and Al-O-Mg linkages, and a core-shell structured model is tentatively proposed. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：3485 / 3493

页数：9

共 39 条

[11]

DUAN X, Patent No. 001321455

[12]

DUAN X, Patent No. 991193857

[13]

GOODMANGILMAN A, 1996, PHARMACOL BASIS, P995

[14]

Hussein MZ, 2002, J CONTROL RELEASE, V82, P417