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6 results on '"Campelo, Pedro"'

1. Hibiscus acetosella: An Unconventional Alternative Edible Flower Rich in Bioactive Compounds

Author

dos Santos Silva, Laila Yasmim, primary, da Silva Ramos, Andrezza, additional, Cavalcante, Débora Nogueira, additional, Kinupp, Valdely Ferreira, additional, da Silva Rodrigues, João Vitor, additional, Ventura, Bianca Muniz Lacerda, additional, de Oliveira Mendes, Tiago Antônio, additional, Sanches, Edgar Aparecido, additional, Campelo, Pedro Henrique, additional, and de Araújo Bezerra, Jaqueline, additional

Published
2023
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2. Encapsulation of Bromelain in Combined Sodium Alginate and Amino Acid Carriers: Experimental Design of Simplex-Centroid Mixtures for Digestibility Evaluation

Author

Ricardo, Philipi Cavalcante, primary, Serudo, Ricardo Lima, additional, Ţălu, Ştefan, additional, Lamarão, Carlos Victor, additional, da Fonseca Filho, Henrique Duarte, additional, de Araújo Bezerra, Jaqueline, additional, Sanches, Edgar Aparecido, additional, and Campelo, Pedro Henrique, additional

Published
2022
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3. Head-to-Tail and Head-to-Head Molecular Chains of Poly(p-Anisidine): Combined Experimental and Theoretical Evaluation

Author

de Oliveira, Lilian Rodrigues, primary, de Souza Gonçalves, Douglas, additional, de Souza Carolino, Adriano, additional, Facchinatto, William Marcondes, additional, de Carvalho Menezes, Diogo, additional, Dias, Cleverton Oliveira, additional, Colnago, Luiz Alberto, additional, Ruiz, Yurimiler Leyet, additional, Ţălu, Ştefan, additional, da Fonseca Filho, Henrique Duarte, additional, Chaudhuri, Puspitapallab, additional, Campelo, Pedro Henrique, additional, Mascarenhas, Yvonne Primerano, additional, and Sanches, Edgar Aparecido, additional

Published
2022
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4. PANI–WO3·2H2O Nanocomposite: Phase Interaction and Evaluation of Electronic Properties by Combined Experimental Techniques and Ab-Initio Calculation

Author

de Souza Carolino, Adriano, primary, Moraes Biondo, Matheus, additional, Ţălu, Ştefan, additional, da Fonseca Filho, Henrique Duarte, additional, Campelo, Pedro Henrique, additional, Bezerra, Jaqueline de Araújo, additional, Mota, Cicero, additional, da Frota, Hidembergue Ordozgoith, additional, Bagnato, Vanderlei Salvador, additional, Inada, Natalia Mayumi, additional, and Sanches, Edgar Aparecido, additional

Published
2022
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5. Poly(o-methoxyaniline) Chain Degradation Based on a Heat Treatment (HT) Process: Combined Experimental and Theoretical Evaluation

Author

da Silva, Jéssica Montenegro Santana, primary, de Souza Carolino, Adriano, additional, de Oliveira, Lilian Rodrigues, additional, de Souza Gonçalves, Douglas, additional, Biondo, Matheus Moraes, additional, Campelo, Pedro Henrique, additional, de Araújo Bezerra, Jaqueline, additional, Ţălu, Ştefan, additional, da Fonseca Filho, Henrique Duarte, additional, da Frota, Hidembergue Ordozgoith, additional, and Sanches, Edgar Aparecido, additional

Published
2022
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6. PANI–WO 3 ·2H 2 O Nanocomposite: Phase Interaction and Evaluation of Electronic Properties by Combined Experimental Techniques and Ab-Initio Calculation.

Author

de Souza Carolino, Adriano, Moraes Biondo, Matheus, Ţălu, Ştefan, da Fonseca Filho, Henrique Duarte, Campelo, Pedro Henrique, Bezerra, Jaqueline de Araújo, Mota, Cicero, da Frota, Hidembergue Ordozgoith, Bagnato, Vanderlei Salvador, Inada, Natalia Mayumi, and Sanches, Edgar Aparecido

Subjects
CONJUGATED polymers, AB-initio calculations, POLYMERIC nanocomposites, NANOCOMPOSITE materials, TUNGSTEN oxides, DENSITY functional theory, ELECTRIC conductivity, CHARGE transfer
Abstract

The development of conjugated polymer-based nanocomposites by adding metallic particles into the polymerization medium allows the proposition of novel materials presenting improved electrical and optical properties. Polyaniline Emeraldine-salt form (ES–PANI) has been extensively studied due to its controllable electrical conductivity and oxidation states. On the other hand, tungsten oxide (WO3) and its di-hydrated phases, such as WO3·2H2O, have been reported as important materials in photocatalysis and sensors. Herein, the WO3·2H2O phase was directly obtained during the in-situ polymerization of aniline hydrochloride from metallic tungsten (W), allowing the formation of hybrid nanocomposites based on its full oxidation into WO3·2H2O. The developed ES–PANI–WO3·2H2O nanocomposites were successfully characterized using experimental techniques combined with Density Functional Theory (DFT). The formation of WO3·2H2O was clearly verified after two hours of synthesis (PW2 nanocomposite), allowing the confirmation of purely physical interaction between matrix and reinforcement. As a result, increased electrical conductivity was verified in the PW2 nanocomposite: the DFT calculations revealed a charge transfer from the p-orbitals of the polymeric phase to the d-orbitals of the oxide phase, resulting in higher conductivity when compared to the pure ES–PANI. [ABSTRACT FROM AUTHOR]

Published
2022
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