Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties

This work reports the microstructural (XRD/SEM), dilatometric and electrical characterization (impedance spectroscopy) of ceria (CeO2) obtained by microwave-assisted hydrothermal synthesis under mild conditions (T = 120 °C and short reaction times of 10 and 20 min). The as-prepared and calcined po...

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Principais autores: Nascimento, Rubens Maribondo Do, Carregosa, João Domingos Covello, Grilo, João Paulo de Freitas, Godoi, Glauber Silva, Macedo, Daniel Araújo de, Oliveira, Rosane Maria Pessoa Betânio
Formato: article
Idioma:English
Publicado em: Elsevier
Assuntos:
Microwave-assisted hydrothermal synthesis
Ceramics
CeO2
Dilatometry
Electrical properties
Endereço do item:https://repositorio.ufrn.br/handle/123456789/45454
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spelling ri-123456789-454542024-03-19T04:02:45Z Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties Nascimento, Rubens Maribondo Do Carregosa, João Domingos Covello Grilo, João Paulo de Freitas Godoi, Glauber Silva Macedo, Daniel Araújo de Oliveira, Rosane Maria Pessoa Betânio Microwave-assisted hydrothermal synthesis Ceramics CeO2 Dilatometry Electrical properties This work reports the microstructural (XRD/SEM), dilatometric and electrical characterization (impedance spectroscopy) of ceria (CeO2) obtained by microwave-assisted hydrothermal synthesis under mild conditions (T = 120 °C and short reaction times of 10 and 20 min). The as-prepared and calcined powders show characteristic diffraction peaks of the cubic fluorite-type structure of cerium oxide. A remarkable sinterability allows obtaining dense ceramics (relative densities exceeding 95%) with enhanced electrical properties (σt = 2.14 × 10−5 S cm−1 at 500 °C) after sintering at a temperature as low as 1200 °C 2030-12 2021-12-17T14:11:16Z 2020-10 article CARREGOSA, João D. C.; GRILO, João P. F.; GODOI, Glauber S.; MACEDO, Daniel A.; NASCIMENTO, Rubens M.; OLIVEIRA, Rosane M. P. B. Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties. Ceramics International, [S.L.], v. 46, n. 14, p. 23271-23275, out. 2020. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884220316679?via%3Dihub. Acesso em: 30 mar. 2021. http://dx.doi.org/10.1016/j.ceramint.2020.06.021. 0272-8842 https://repositorio.ufrn.br/handle/123456789/45454 10.1016/j.ceramint.2020.06.021 en Elsevier
institution Repositório Institucional
collection RI - UFRN
language English
topic Microwave-assisted hydrothermal synthesis
Ceramics
CeO2
Dilatometry
Electrical properties
spellingShingle Microwave-assisted hydrothermal synthesis
Ceramics
CeO2
Dilatometry
Electrical properties
Nascimento, Rubens Maribondo Do
Carregosa, João Domingos Covello
Grilo, João Paulo de Freitas
Godoi, Glauber Silva
Macedo, Daniel Araújo de
Oliveira, Rosane Maria Pessoa Betânio
Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties
description This work reports the microstructural (XRD/SEM), dilatometric and electrical characterization (impedance spectroscopy) of ceria (CeO2) obtained by microwave-assisted hydrothermal synthesis under mild conditions (T = 120 °C and short reaction times of 10 and 20 min). The as-prepared and calcined powders show characteristic diffraction peaks of the cubic fluorite-type structure of cerium oxide. A remarkable sinterability allows obtaining dense ceramics (relative densities exceeding 95%) with enhanced electrical properties (σt = 2.14 × 10−5 S cm−1 at 500 °C) after sintering at a temperature as low as 1200 °C
format article
author Nascimento, Rubens Maribondo Do
Carregosa, João Domingos Covello
Grilo, João Paulo de Freitas
Godoi, Glauber Silva
Macedo, Daniel Araújo de
Oliveira, Rosane Maria Pessoa Betânio
author_facet Nascimento, Rubens Maribondo Do
Carregosa, João Domingos Covello
Grilo, João Paulo de Freitas
Godoi, Glauber Silva
Macedo, Daniel Araújo de
Oliveira, Rosane Maria Pessoa Betânio
author_sort Nascimento, Rubens Maribondo Do
title Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties
title_short Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties
title_full Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties
title_fullStr Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties
title_full_unstemmed Microwave-assisted hydrothermal synthesis of ceria (CeO2): microstructure, sinterability and electrical properties
title_sort microwave-assisted hydrothermal synthesis of ceria (ceo2): microstructure, sinterability and electrical properties
publisher Elsevier
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/45454
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