Výsledky vyhledávání - "Marcos J. Jacinto"

Magnetic materials for photocatalytic applications—a review

Autor: Virgínia Silva, L. F. Ferreira, Marcos J. Jacinto

Publikováno v: Journal of Sol-Gel Science and Technology. 96:1-14

Photocatalysts have been widely applied in the degradation of organic compounds using visible and ultraviolet radiation. Different synthesis approaches have been developed and optimized to produce efficient, eco-friendly, and inexpensive materials to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6697cd91527c3c811df80770b0c3060b
https://doi.org/10.1007/s10971-020-05333-9

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Biosynthesis of Cube-Shaped Fe3O4 Nanoparticles for Removal of Dyes Using Fenton Process

Autor: J. R. de Souza, M. A. Soares, Virgínia C. P. Silva, Angélica C. Kauffmann, I. C. Prescilio, R. S. Souto, Marcos J. Jacinto, L. C. Fontana, A. F. Bakuzis

Publikováno v: Water, Air, & Soil Pollution. 232

The anti-oxidative potential of Rhamnidium elaeocarpum extract was assessed using a green chemical bottom-up approach to produce ~ 80 nm cubic Fe3O4 nanoparticles. The protocol makes use of FeCl3 as the only precursor of magnetite, and it allows the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8b4e89209597f93d0c8facd6606f9c4c
https://doi.org/10.1007/s11270-021-05233-w

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Eglerisine, a Novel Sesquiterpenoid Tropolone from Dulacia egleri with Antiproliferative Effect against an Acute Myeloid Leukemia Lineage

Autor: L. F. Ferreira, Carlos Henrique Corrêa dos Santos, Paulo Teixeira de Sousa, Tereza A. N. Ribeiro, Heron Fernandes Vieira Torquato, Leice M. R. de Novais, Marcos J. Jacinto, Edgar J. Paredes-Gamero, Mario Geraldo de Carvalho, Virgínia C. P. Silva

Publikováno v: Planta Medica. 86:55-60

Chemical investigation of the stems of Dulacia egleri resulted in the isolation of eglerisine (1), a compound with a rare sesquiterpenoid tropolone skeleton. Its structure was determined by analysis of spectrometric and spectroscopic data, including

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62a75cceac648f98c244d8d070bd0bef
https://doi.org/10.1055/a-1021-0611

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Biosynthesis of Ag nanoparticles and their immobilization on multifunctional ZnO materials–a step closer to environmental feasibility

Autor: C. F. Silva, Marcos J. Jacinto, L. F. Ferreira, Evandro Luiz Dall'Oglio, E. S. Oliveira, Leonardo Gomes de Vasconcelos, Paulo Teixeira de Sousa

Publikováno v: Journal of Sol-Gel Science and Technology. 91:21-32

In this study, the anti-oxidative potential of Simaba trichilioides was exploited to produce uniform Ag nanoparticles followed by their in-situ immobilization on a multifunctional magnetite–mesoporous ZnO composite (Fe3O4@mZnO). The strategy is to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04ea374b8e5ca273384df61dc74d4eca
https://doi.org/10.1007/s10971-019-05014-2

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4′-Hydroxy-6,7-methylenedioxy-3-methoxyflavone: A novel flavonoid from Dulacia egleri with potential inhibitory activity against cathepsins B and L

Autor: Wagner Alves de Souza Judice, Aline Aparecida de Souza, Leice M. R. de Novais, Mário Geraldo de Carvalho, Marcos J. Jacinto, Edgar J. Paredes-Gamero, Larissa de Oliveira Passos Jesus, Virgínia Claudia da Silva, L. F. Ferreira, Heron Fernandes Vieira Torquato, Cauane C.O. de Arueira, Paulo Teixeira de Sousa, Tereza A. N. Ribeiro

Publikováno v: Fitoterapia. 132:26-29

A new flavone, 4′-hydroxy-6,7-methylenedioxy-3-methoxyflavone 1, and two other nucleosides, ribavirin 2 and adenosine 3, were isolated from the leaves of Dulacia egleri. The nucleosides were identified by spectroscopic techniques (1D, 2D-NMR) while

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afce83c8974de49dfb1257a5b9989300
https://doi.org/10.1016/j.fitote.2018.08.005

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Compounds from the Root Bark of Bowdichia virgilioides

Autor: Tereza A. N. Ribeiro, Paulo Teixeira de Sousa Junior, Angélica C. Kauffmann, Marcos J. Jacinto, Virgínia C. P. Silva, Mayara C. Sousa

Publikováno v: Chemistry of Natural Compounds. 57:927-928

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d06ed9e9430c4fa66ed1f848b0e70b14
https://doi.org/10.1007/s10600-021-03514-8

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Urea-assisted fabrication of Fe3O4@ZnO@Au composites for the catalytic photodegradation of Rhodamine-B

Autor: Debora Cecília Cabana, Marcos J. Jacinto, Robes Alves da Silva, Virgínia Claudia da Silva

Publikováno v: Journal of Sol-Gel Science and Technology. 86:94-103

A new chemical approach for the fabrication of Fe3O4 embedded ZnO magnetic semicondutctor composite is reported. The method consists in increasing the pH of the synthesis solution by the thermal decomposition of urea instead of using common alkaline

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ff5d8745a2eff786345a083253f8df7f
https://doi.org/10.1007/s10971-018-4607-0

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[1-8-NαC]-Zanriorb A1, a Proapoptotic Orbitide from Leaves of Zanthoxylum riedelianum

Autor: Carlos Henrique Corrêa dos Santos, Pâmela J. dos S. Beirigo, Mario Geraldo de Carvalho, Paulo Teixeira de Sousa, Edgar J. Paredes-Gamero, Virgínia Claudia da Silva, Heron Fernandes Vieira Torquato, Marcos J. Jacinto, Rosane Nora Castro

Publikováno v: Journal of Natural Products. 79:1454-1458

A new orbitide named [1-8-NαC]-zanriorb A1 (1) was isolated and characterized from the leaves of Zanthoxylum riedelianum using NMR and mass spectrometry. The absolute configuration of the amino acids was determined using Marfey's method on the acid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31b10b966395412fc9a70a7705c87acd
https://doi.org/10.1021/acs.jnatprod.5b00177

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Eleocarpanthraquinone, a novel anthraquinone from Rhamnidium elaeocarpum (Rhamnaceae)

Autor: Marcos J. Jacinto, Wagner Alves de Souza Judice, Marli de F.C. Emiliano, Angélica C. Kauffmann, Paulo Teixeira de Sousa, Luan dos Santos Vianna, Tereza A. N. Ribeiro, Rhayssa G.S.P. Oliveira, Thainara A. Dourado, Mário Geraldo de Carvalho, Gabriel L. C. de Souza, Virgínia C. P. Silva, Iuri N. Soares

Publikováno v: Tetrahedron Letters. 61:152489

Chemical investigation of the stem bark of Rhamnidium elaeocarpum resulted in the isolation of eleocarpanthraquinone (1), a new anthrone-anthraquinone linked through a spiroketal bridge and the known anthraquinone chrysophanol (2). The structure of (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e24fd097ab7f80284d68e33f184c1aa
https://doi.org/10.1016/j.tetlet.2020.152489

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Platinum-supported mesoporous silica of facile recovery as a catalyst for hydrogenation of polyaromatic hydrocarbons under ultra-mild conditions

Autor: M. Wizbiki, L. C. Justino, Virgínia Claudia da Silva, Marcos J. Jacinto

Publikováno v: Journal of Sol-Gel Science and Technology. 77:298-305

Here we describe a new platinum catalyst comprised of Pt(0) nanoparticles immobilized on a modified magnetic mesoporous silica support modified with electron donor groups (–N). The material is constituted of controlled pore size (2.4–4.1 nm) and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b78970cf0feff5cd13c121f3c81d91b
https://doi.org/10.1007/s10971-015-3854-6

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