Dielectric properties of Bi-substituted LDHs synthesized by co-precipitation and sol-gel methods

被引：5

作者：

Sokol, Denis ^{[1
]}

Ivanov, Maksim ^{[2
]}

Salak, Andrei N. ^{[3
]}

Grigalaitis, Robertas ^{[2
]}

Banys, Juras ^{[2
]}

Kareiva, Aivaras ^{[1
]}

机构：

[1] Vilnius Univ, Inst Chem, Naugarduko 24, LT-03225 Vilnius, Lithuania

[2] Vilnius Univ, Aculty Phys, LT-10222 Vilnius, Lithuania

[3] Univ Aveiro, Dept Mat & Ceram Engn, CICECO, P-3810193 Aveiro, Portugal

来源：

MATERIALS SCIENCE-POLAND | 2019年 / 37卷 / 02期

基金：

欧盟地平线“2020”;

关键词：

layered double hydroxide; bismuth substitution; co-precipitation; sol-gel; dielectric properties; LAYERED DOUBLE HYDROXIDES; PERMITTIVITY;

D O I：

10.2478/msp-2019-0035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnesium-aluminum-bismuth layered double hydroxides (Mg3Al1-xBix; LDHs) were prepared using both co-precipitation and sol-gel methods. For the preparation of Mg/Al/Bi LDH by the co-precipitation method, the appropriate amounts of dissolved starting materials (Al(NO3)(3) center dot 9H(2)O, Mg(NO3)(2) center dot 6H(2)O and Bi(NO3)(3) center dot 5H(2)O) were mixed with a solution of NaHCO3:NaOH. In the sol-gel processing, the precursor Mg-Al-Bi-O gels were synthesized using the same starting materials and ethylene glycol as complexing agent. The mixed-metal oxides obtained by subsequent heating of Mg-Al-Bi-O gels at 650 degrees C were reconstructed to Mg3Al1-xBix LDHs in water at 80 degrees C. All the synthesized products were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and dielectric measurements.

引用

页码：190 / 195

页数：6

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