Výsledky vyhledávání - "L. León Félix"

Akademický článek

Characterization and magnetic properties of hollow α-Fe2O3 microspheres obtained by sol gel and spray roasting methods

Autor: L. De Los Santos Valladares, A. Bustamante Domínguez, L. León Félix, J.B. Kargin, D.G. Mukhambetov, A.L. Kozlovskiy, N.O. Moreno, J. Flores Santibañez, R. Castellanos Cabrera, C.H.W. Barnes

Publikováno v: Journal of Science: Advanced Materials and Devices, Vol 4, Iss 3, Pp 483-491 (2019)

In this work, we characterize the hollow hematite (α-Fe2O3) micro spheres obtained by two non-template techniques: i) sol gel and ii) spray roasting process. Both techniques allow the production of high yield hollow hematite spheres up to 100 g for

Externí odkaz: https://doaj.org/article/be7168b4fa214517ab4bd9f8952d74ef

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High efficiency of magnetite nanoparticles for the arsenic removal from an aqueous solution and natural water taken from Tambo River in Peru

Autor: M. Huanca Ccamerccoa, N. L. Tapia Falcon, L. León Félix, D. G. Pacheco-Salazar, F. F. H. Aragón, J. A. H. Coaquira, Jéremie Garnier, C. Vera-Gonzales

Publikováno v: Journal of Environmental Health Science and Engineering. 20:849-860

Water is an essential compound on earth and necessary for life. The presence of highly toxic contaminants such as arsenic and others, in many cases, represents one of the biggest problems facing the earth´s population. Treatment of contaminated wate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2a4e91a80ba6b0af5ee0e7a5f1cb133
https://doi.org/10.1007/s40201-022-00825-y

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Synthesis and characterization of

Autor: Luis T, Quispe, L G Luza, Mamani, A A, Baldárrago-Alcántara, L León, Félix, Gerardo F, Goya, J A, Fuentes-García, D G, Pacheco-Salazar, J A H, Coaquira

Publikováno v: Nanotechnology. 33(33)

P-type and n-type metal oxide semiconductors are widely used in the manufacture of gas sensing materials, due to their excellent electronic, electrical and electrocatalytic properties. Hematite (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::6dd959b7a13f2562614dfd8f1048c65f
https://pubmed.ncbi.nlm.nih.gov/35508085

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Synthesis and characterization of a-Fe2O3 nanoparticles showing potential applications for sensing quaternary ammonium vapor at room temperature

Autor: Luis T Quispe, L G Luza Mamani, A A Baldárrago-Alcántara, L León Félix, Gerardo F Goya, J A Fuentes-García, D G Pacheco-Salazar, J A H Coaquira

Publikováno v: Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname
Digital.CSIC. Repositorio Institucional del CSIC

P-type and n-type metal oxide semiconductors are widely used in the manufacture of gas sensing materials, due to their excellent electronic, electrical and electrocatalytic properties. Hematite (α-Fe2O3) compound has been reported as a promising mat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::428e12336b010e995236517a5803fafa
http://zaguan.unizar.es/record/118732

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Evidence of surface spin-glass behavior in NiFe2O4 nanoparticles determined using magnetic resonance technique

Autor: Menchu Martinez, Paulo C. Morais, Jose A. H. Coaquira, J. Mantilla, Paulo Eduardo Narcizo de Souza, Leandro Corrêa Figueiredo, Pedro Augusto Matos Rodrigues, L. León Félix, F. H. Aragón, S.W. da Silva

Publikováno v: Journal of Magnetism and Magnetic Materials. 476:392-397

Nanosized nickel ferrite (NiFe2O4) is successfully synthesized by the sol-gel method using citric acid (C6H8O7) as fuel. The X-ray diffraction pattern of the as-synthesized sample shows formation of NiFe2O4 nanoparticles (NPs) as the main phase, with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5f5af1a9b9b07bfb3bbe2f820554bc38
https://doi.org/10.1016/j.jmmm.2019.01.001

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Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties

Autor: L. León Félix, Marcelo Henrique Sousa, Joaquin Martinez Porcel, D.G. Pacheco-Salazar, F. H. Aragón

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
CONCYTEC-Institucional
Consejo Nacional de Ciencia Tecnología e Innovación Tecnológica
instacron:CONCYTEC

We describe a simple method for the preparation of gold-decorated silica (SiO₂) nanoparticles (NPs) by the in situ precipitation method using simple BH₄⁻ ions reduction as a procedure, where BH₄⁻ ions are adsorbed onto PEI-functionalized Si

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7919ca8c000868ef05bf9c582a0c2fb
http://sedici.unlp.edu.ar/handle/10915/123834

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One-step synthesis of polyethyleneimine-coated magnetite nanoparticles and their structural, magnetic and power absorption study

Autor: Jose A. H. Coaquira, M. A. R. Martínez, L. León Félix, David Gregorio Pacheco Salazar

Publikováno v: RSC advances. 10(68)

Magnetic nanoparticles (NPs) are especially interesting for several biomedical applications due to their chemical surface, especially for targeted cancer imaging and therapeutics. In order to realize these applications, it is important to know their

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4bfabe8aefada65fb8ff173e13ceefc
https://pubmed.ncbi.nlm.nih.gov/35516540

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Evidence of particle-particle interaction quenching in nanocomposite based on oleic acid-coated Fe3O4 nanoparticles after over-coating with essential oil extracted from Croton cajucara Benth

Autor: F.S.E.D.V. Faria, L. León-Félix, J.C. Mantilla Ochoa, Marcelo Henrique Sousa, A.F.R. Rodríguez, Paulo C. Morais, J.J.A. Medrano, F. H. Aragón, J.A.H. Coaquira

Publikováno v: Journal of Magnetism and Magnetic Materials. 466:359-367

This study reports on the synthesis and characterization of oleic acid (OA)-coated Fe3O4 nanoparticles (Fe3O4@OA) and AO plus essential oil (EO)-coated Fe3O4 nanoparticles (Fe3O4@OA/EO). The EO was extracted from Croton cajucara Benth (CCB) leaves; a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46cb5a90f09dee74720f62ac2e65a937
https://doi.org/10.1016/j.jmmm.2018.07.036

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Washing effect on the structural and magnetic properties of NiFe 2 O 4 nanoparticles synthesized by chemical sol-gel method

Autor: J. Mantilla, M.A. Rodriguez, J.A.H. Coaquira, P.C. Morais, Vijayendra K. Garg, Erno Kuzmann, F. H. Aragón, Waldemar A. A. Macedo, A. C. de Oliveira, Ismael González, L. León Félix

Publikováno v: Materials Chemistry and Physics. 213:295-304

NiFe2O4 nanocrystalline samples were synthesized by the sol-gel method. The X-ray diffraction patterns of the as-synthesized samples (S- NiFe2O4) showed the formation of main spinel ferrite structure, with an average crystalline size of ∼50 nm. Aft

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf58f00bd15f300a423971870bbfad6b
https://doi.org/10.1016/j.matchemphys.2018.04.022

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Magnetite-based nanobioplatform for site delivering Croton cajucara Benth essential oil

Autor: Renildo Moura da Cunha, J.J. Atoche-Medrano, F.S.E.D.V. Faria, Anselmo Fortunato Ruiz Rodriguez, Marcelo Henrique Sousa, Ricardo Bentes Azevedo, Paulo C. Morais, F. H. Aragón, J.A.H. Coaquira, L. León-Félix

Publikováno v: Materials Chemistry and Physics. 207:243-252

Surface coating magnetic nanoparticles can be realized using organic moieties, such as essential oil (EO) extracted from Croton cajucara Benth leaves, a common plant from the Brazilian Amazon region successfully used for infusion in popular medicine.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ca245c279f3ae65b499f335de8851e7
https://doi.org/10.1016/j.matchemphys.2017.12.058

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