Generalized preparation of porous nanocrystalline ZnFe2O4 superstructures from zinc ferrioxalate precursor and its superparamagnetic property

被引：148

作者：

Wang, Man ^{[1
]}

Ai, Zhihui ^{[1
]}

Zhang, Lizhi ^{[1
]}

机构：

[1] Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol, Minist Educ, Wuhan 430079, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 34期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1021/jp804009h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, porous nanocrystalline ZnFe2O4 "timber-like" superstructures were synthesized through the thermal decomposition of zinc ferrioxalate precursor prepared from metal sulfates and sodium oxalate without adding any additives. The resulting ZnFe2O4 superstructures were systematically characterized by X-ray powder diffraction (XRD), thermogravimetry and differential scanning calorimetry (TG-DSC), scanning electronic microscopy (SEM), transmission electron microscopy (TEM) and high-resolution TEM (HRTEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR). We found that the porous nanocrystalline ZnFe2O4 superstructures exhibited superparamagnetic properties at room temperature. These porous nanocrystalline ZnFe2O4 superstructures may be applied in magnetic devices. Meanwhile, this general approach could be extended to synthesize porous nanocrystalline CoFe2O4 and NiFe2O4 "timber-like" superstructures.

引用

页码：13163 / 13170

页数：8

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