Výsledky vyhledávání - "C. R. R. Almeida"

Presence of excited electronic states on terbium incorporation in CaMoO4: Insights from experimental synthesis and first-principles calculations

Autor: Elson Longo, Renan Augusto Pontes Ribeiro, L.X. Lovisa, C. R. R. Almeida, Fabiana V. Motta, A.A.G. Santiago, Carlos A. Paskocimas, Mauricio R. D. Bomio, Sergio Ricardo de Lazaro, Marisa C. Oliveira, Ricardo L. Tranquilin

Publikováno v: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN

We present a combined experimental and theoretical study to understand the structure and electronic and optical properties of CaMoO4:xTb3+ (x = 1 mol%, 2 mol%, and 4 mol%) microspheres. The microspheres were prepared by ultrasonic spray pyrolysis and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdf270fe0abce66cccfcdd40df1acb8b
https://repositorio.ufrn.br/handle/123456789/32876

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Photoluminescent properties of the Ba1−xZnxMoO4 heterostructure obtained by ultrasonic spray pyrolysis

Autor: Fabiana V. Motta, A.A.G. Santiago, C. R. R. Almeida, Ricardo L. Tranquilin, Rubens M. Nascimento, Elson Longo, Mauricio R. D. Bomio, Carlos A. Paskocimas

Publikováno v: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN

In this study, Ba1−xZnxMoO4 (x = 0, 0.25, 0.5, 0.75 and 1) microspheres were the first time described in the literature the by ultrasonic spray pyrolysis method. Powders were characterized by X-ray diffraction (XRD), scanning electronic microscopy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b790dd6156f164c7cc8bb737548fabe6
https://doi.org/10.1016/j.ceramint.2017.11.161

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Integration of experiment and computational modeling on the Tb doping process in CaMoO4 obtained by USP method: An efficient way to obtain photoluminescent materials

Autor: L.X. Lovisa, R.A.P. Ribeiro, C. R. R. Almeida, Elson Longo, Sergio Ricardo de Lazaro, A.A.G. Santiago, Carlos A. Paskocimas, Marisa C. Oliveira, Mauricio R. D. Bomio, Fabiana V. Motta, Ricardo L. Tranquilin

Publikováno v: ChemPhysChem.

In this paper, we present a combined experimental and theoretical study to disclose, the structure, electronic and optical properties of CaMoO 4 :xTb 3+ ( x = 1%, 2%, and 4%) microspheres. The microspheres were prepared by ultrasonic spray pyrolysis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d532e5e0ef25c160f5859a7a78e0eb1
https://doi.org/10.1002/cphc.202000064

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Understanding the White-Emitting CaMoO4 Co-Doped Eu3+, Tb3+, and Tm3+ Phosphor through Experiment and Computation

Autor: Ricardo L. Tranquilin, Marisa C. Oliveira, Elson Longo, Máximo Siu Li, Lourdes Gracia, Juan Andrés, Mauricio R. D. Bomio, Fabiana V. Motta, Carlos A. Paskocimas, C. R. R. Almeida, L.X. Lovisa

Publikováno v: Repositori Universitat Jaume I
Universitat Jaume I
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN

In this article, the synthesis by means of the spray pyrolysis method, of the CaMoO4 and rare-earth cation (RE3+)-doped CaMoO4:xRE3+ (RE3+ = Eu3+, Tb3+, and Tm3+; and x = 1, 2, and 4% mol) compounds, is presented. The as-synthesized samples were char

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a72b0c89a8118941b89aeb3e1b387ef4

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One-step synthesis of CaMoO4: Eu3+ nanospheres by ultrasonic spray pyrolysis

Autor: Máximo Siu Li, C. R. R. Almeida, Carlos A. Paskocimas, A.A.G. Santiago, Elson Longo, Mauricio R. D. Bomio, Fabiana V. Motta, L.X. Lovisa

Publikováno v: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

In this paper, CaMoO4 and of Eu3+-doped CaMoO4 nanospheres were prepared by a spray pyrolysis method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Raman spectra and photoluminescence spectroscopy.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edc92e44c6f7c294b8066b463ed5dcaa
https://repositorio.ufrn.br/handle/123456789/32271

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Enhancement of the photocatalytic activity and white emission of CaIn2O4 nanocrystals

Autor: Marcos Tavares, M.M. Melo, Fabiana V. Motta, Elson Longo, R. L. Tranquilin, V. D. Araújo, C. R. R. Almeida, Mauricio R. D. Bomio, Carlos A. Paskocimas

Publikováno v: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN

CaIn2O4 (CIO) nanocrystals (NCs) were prepared by ultrasonic spray pyrolysis at 1223 K without the use of surfactants to investigate the influences of the nanostructure on the photoluminescence and photocatalytic properties of this white-light emitte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c1fe5191abd7f46291b2b8a9a96a6ce
https://repositorio.ufrn.br/handle/123456789/32276

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High energy mill processing of polymer based nanocomposites

Autor: Carlos A. Paskocimas, Rannier Marques Mendonça, C. R. R. Almeida, Antônio Marcos de Medeiros, José Daniel Diniz Melo

Publikováno v: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN

Polymer matrix nanocomposites have attracted growing attention due to the potential for significantly improving the properties of the polymer by adding a very small amount of nanoparticles. However, the improvement in properties has been related to t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fadbe6c1f53226a68163e136e77acb09
https://repositorio.ufrn.br/handle/123456789/32191

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