Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade

Niobium oxides, Nb2O5, are considered semiconductor materials with very attractive physical and chemical properties for applications in many areas, such as catalysis, sensors, medical, aerospace, etc. Especially, the characterization of Nb2O5-based nanostructures with monoclinic structure has receiv...

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Principais autores: Ody, Kamila da Silva, Jesus, João Paulo Almirão de, Cava, Carlos Eduardo, Albuquerque, Anderson dos Reis, Maia, Ary da Silva, Sambrano, Julio Ricardo, La Porta, Felipe de Almeida
Formato: Artigo
Idioma: Português
Publicado em: Londrina 2022
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Acesso em linha: http://repositorio.utfpr.edu.br/jspui/handle/1/28689
http://dx.doi.org/10.21577/0100-4042.20170779
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spelling riut-1-286892022-05-28T06:08:00Z Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade Assessment of the electronic structure of the monoclinic phase of niobium oxide based on the use of different density functionals Ody, Kamila da Silva Jesus, João Paulo Almirão de Cava, Carlos Eduardo Albuquerque, Anderson dos Reis Maia, Ary da Silva Sambrano, Julio Ricardo La Porta, Felipe de Almeida Nióbio Estrutura eletrônica Química - Densidade Niobium Electronic structure Chemistry - Density CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA Niobium oxides, Nb2O5, are considered semiconductor materials with very attractive physical and chemical properties for applications in many areas, such as catalysis, sensors, medical, aerospace, etc. Especially, the characterization of Nb2O5-based nanostructures with monoclinic structure has received much attention in recent years. However, despite the great importance of this system, some of its fundamentals properties are still not fully understood. Hence, this work aims to apply the theoretical methodologies through Density Functional Theory (DFT) calculations in periodic models based on the use of different density functionals (like B1WC, B3PW, B3LYP, PBE0, PBESOL0, SOGGAXC, and WC1LYP) to investigate the physical and chemical properties of the monoclinic structure of Nb2O5. The band structures, energy bandgap, density of state, and vibrational properties, as well as order-disorder effects on the monoclinic structure of Nb2O5 are investigated in this study. Our theoretical results show a better agreement with experimental data for the B3LYP functional and hence lead to new perspectives on the deeper physicochemical understanding of the monoclinic Nb2O5. From these computational tools, it is possible to unravel the relations between structure and properties, which may contribute to the future development of new devices and applications based on these materials. 2022-05-27T22:08:46Z 2022-05-27T22:08:46Z 2021 article ODY, Kamila da Silva et al. Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade. Química Nova, São Paulo, v. 44, n. 9, p. 1124-1131, 2021. Disponível em: http://quimicanova.sbq.org.br/detalhe_artigo.asp?id=9332. Acesso em: 27 maio 2022. 1678-7064 http://repositorio.utfpr.edu.br/jspui/handle/1/28689 http://dx.doi.org/10.21577/0100-4042.20170779 por Química Nova http://quimicanova.sbq.org.br/detalhe_artigo.asp?id=9332 openAccess http://creativecommons.org/licenses/by/4.0/ application/pdf Londrina Brasil
institution Universidade Tecnológica Federal do Paraná
collection RIUT
language Português
topic Nióbio
Estrutura eletrônica
Química - Densidade
Niobium
Electronic structure
Chemistry - Density
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
spellingShingle Nióbio
Estrutura eletrônica
Química - Densidade
Niobium
Electronic structure
Chemistry - Density
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
Ody, Kamila da Silva
Jesus, João Paulo Almirão de
Cava, Carlos Eduardo
Albuquerque, Anderson dos Reis
Maia, Ary da Silva
Sambrano, Julio Ricardo
La Porta, Felipe de Almeida
Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade
description Niobium oxides, Nb2O5, are considered semiconductor materials with very attractive physical and chemical properties for applications in many areas, such as catalysis, sensors, medical, aerospace, etc. Especially, the characterization of Nb2O5-based nanostructures with monoclinic structure has received much attention in recent years. However, despite the great importance of this system, some of its fundamentals properties are still not fully understood. Hence, this work aims to apply the theoretical methodologies through Density Functional Theory (DFT) calculations in periodic models based on the use of different density functionals (like B1WC, B3PW, B3LYP, PBE0, PBESOL0, SOGGAXC, and WC1LYP) to investigate the physical and chemical properties of the monoclinic structure of Nb2O5. The band structures, energy bandgap, density of state, and vibrational properties, as well as order-disorder effects on the monoclinic structure of Nb2O5 are investigated in this study. Our theoretical results show a better agreement with experimental data for the B3LYP functional and hence lead to new perspectives on the deeper physicochemical understanding of the monoclinic Nb2O5. From these computational tools, it is possible to unravel the relations between structure and properties, which may contribute to the future development of new devices and applications based on these materials.
format Artigo
author Ody, Kamila da Silva
Jesus, João Paulo Almirão de
Cava, Carlos Eduardo
Albuquerque, Anderson dos Reis
Maia, Ary da Silva
Sambrano, Julio Ricardo
La Porta, Felipe de Almeida
author_sort Ody, Kamila da Silva
title Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade
title_short Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade
title_full Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade
title_fullStr Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade
title_full_unstemmed Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade
title_sort avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade
publisher Londrina
publishDate 2022
citation ODY, Kamila da Silva et al. Avaliação da estrutura eletrônica da fase monoclinica do óxido de nióbio com base no uso de diferentes funcionais de densidade. Química Nova, São Paulo, v. 44, n. 9, p. 1124-1131, 2021. Disponível em: http://quimicanova.sbq.org.br/detalhe_artigo.asp?id=9332. Acesso em: 27 maio 2022.
1678-7064
url http://repositorio.utfpr.edu.br/jspui/handle/1/28689
http://dx.doi.org/10.21577/0100-4042.20170779
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score 10,814766