Preparation and characterization of the spinel oxide ZnCo2O4 obtained by sol-gel method

被引：106

作者：

Wei, Xiuhua ^{[1
]}

Chen, Donghua ^{[1
]}

Tang, Wanjun ^{[1
]}

机构：

[1] Cent S Univ Nationalities, Hubei Key Lab Catalysis & Mat Sci, Coll Chem & Mat Sci, Wuhan 430074, Hubei, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2007年 / 103卷 / 01期

关键词：

sol-gel; oxalic acid; spinel oxide; ZnCo2O4; TGA; XRD; DSC;

D O I：

10.1016/j.matchemphys.2007.01.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The zinc-cobalt-oxide spinel was obtained by the thermal decomposition of Zn-Co gel prepared by sol-gel method using oxalic acid as a chelating agent. The formation of spinel compound ZnCo2O4 has been confirmed by thermogravimetry (TGA) and X-ray powder diffraction (XRD) and Infra-red spectra (IR). It was shown that well-crystallized spinel structure is formed after calcination at 350 degrees C (low-temperature spinel). The particle size of 15 similar to 20 nm has been measured by transmission electron microscope (TEM). Non-isothermal kinetic parameters (E-a, f(alpha) and A) for the decomposition process of the oxalate precursor were determined using differential scanning calorimetry (DSC) under air atmosphere. The sol-gel method provides a practicable and effective route for the synthesis the spinel compound ZnCo2O4 at low temperature. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：54 / 58

页数：5

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