<abstract xmlns="http://www.w3.org/1999/xhtml">Magnesium-aluminum-bismuth layered double hydroxides (Mg3Al1−xBix; LDHs) were prepared using both coprecipitation 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 · 9H2O, Mg(NO3)2 · 6H2O and Bi(NO3)3 · 5H2O) 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 °C were reconstructed to Mg3Al1−xBix LDHs in water at 80 °C. All the synthesized products were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and dielectric measurements.</abstract>

Magnesium-aluminum-bismuth layered double hydroxides (Mg3Al1−xBix; LDHs) were prepared using both coprecipitation 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 · 9H2O, Mg(NO3)2 · 6H2O and Bi(NO3)3 · 5H2O) 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 °C were reconstructed to Mg3Al1−xBix LDHs in water at 80 °C. All the synthesized products were characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and dielectric measurements.

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

Department of Materials and Ceramic Engineering/CICECO

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Magnesium-aluminum-bismuth layered double hydroxides (Mg3Al1−xBix; LDHs) were prepared using both coprecipitation and sol-gel methods. For the preparation of...

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

Published Online: Aug 02, 2019

Page range: 190 - 195

Received: Mar 07, 2018

Accepted: Apr 19, 2019

DOI: https://doi.org/10.2478/msp-2019-0035

Keywords
layered double hydroxide, bismuth substitution, co-precipitation, sol-gel, dielectric properties

© 2019 Denis Sokol et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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

Published Online: Aug 02, 2019

Page range: 190 - 195

Received: Mar 07, 2018

Accepted: Apr 19, 2019

DOI: https://doi.org/10.2478/msp-2019-0035

Keywordslayered double hydroxide, bismuth substitution, co-precipitation, sol-gel, dielectric properties

© 2019 Denis Sokol et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
layered double hydroxide, bismuth substitution, co-precipitation, sol-gel, dielectric properties