Luminescent and Magnetic Properties of Fe3O4@SiO2:phen:Eu3+

Silva, Raphael Lucas de Sousa e; Figueiredo, Alberthmeiry T. de; Barrado, Cristiano M.

doi:10.1590/1980-5373-mr-2016-0838

Cited by 18 publications

(13 citation statements)

References 32 publications

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“…Changes in these parameters are expected, since, during the reaction, nanoparticles are subjected to high temperatures, highly oxidizing media and ultrasonic irradiation (RETAMAL MARÍN et al, 2018;ISLAM et al, 2014). The nanosilica and the magnetic nanosilica had a particle size like found by Silva et. al.…”

mentioning

confidence: 68%

Synthesis, characterization and cytotoxicity evaluation of magnetic nanosilica in L929 cell line

Bruckmann

Pimentel

Viana

et al. 2020

DS-CNT

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Recently, the incorporation of magnetic nanoparticles in nanomaterials has been showning to be very efficient, which leads to several scientific studies being carried out. Magnetic silica nanoparticles have excellent properties, enabling application in different fields including nanoscience. In this context, this work aimed to synthesize and characterize nanosilica with magnetic properties, in order to evaluate of the cytotoxicity in L929 cell line. The methodology for incorporation of magnetic nanoparticles proved to be fast and effective for obtaining the magnetic nanosilica (Nano SiO 2 .Fe 3 O 4). Through the characterization of FTIR, and exposure of the magnetic field it was possible to verify the incorporation of ferrite in the nanosilica, as well as the XRD technique, the reduction of the particle size and the degree of crystallinity was evidenced. It was possible to verify that the synthesized nano SiO 2 .Fe 3 O 4 showed to be safe in the treatments with lower concentrations with less amount of incoporated ferrite. Nevertheless, more characterizations and studies will be developed to determine the safety and therapeutic efficacy of this magnetic nanoparticles.

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mentioning

confidence: 68%

Synthesis, characterization and cytotoxicity evaluation of magnetic nanosilica in L929 cell line

Bruckmann

Pimentel

Viana

et al. 2020

DS-CNT

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“…6H 2 O) and Fe 2+ (FeSO 4 . 7H 2 O) (Synth, São Paulo, Brazil) salts (molar ratio of 2:1), using an adapted version of a procedure described by Silva et al 14 The overall reaction can be written as equation 1:…”

Section: Synthesis Of Magnetite Nanoparticlesmentioning

confidence: 99%

Magnetic Solid-Phase Microextraction for Lead Detection in Aqueous Samples Using Magnetite Nanoparticles

Silva¹,

Silva²,

Figueiredo³

et al. 2020

J. Braz. Chem. Soc.

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A magnetic solid-phase microextraction procedure was developed to detect lead in aqueous samples by flame atomic absorption spectrometry (FAAS). Fe 3 O 4 nanoparticles were synthesized by coprecipitation and the crystalline phase was confirmed by X-ray diffraction. The point of zero charge (PZC) indicated that the oxide surface was negatively charged at pH levels above 9.4. pH 9.0 is the best for adsorption and the influence of stirring time and adsorbent mass were analyzed and set at 4 min and 3.0 mg, respectively. The best desorption conditions were obtained for 500 µL of 0.5 mol L-1 HNO 3 as eluant. The limit of quantification (LOQ) and relative standard deviation (RSD) were 16.48 µg L-1 and 0.25%, respectively. The linear range was found to be 16.48-500 µg L-1. The accuracy was evaluated by recovery tests in mineral water, micellar water and aqueous makeup remover samples, showing values in the range of 95.94 to 118%.

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“…12 Dopantes criam níveis energéticos entre as bandas de valência e a de condução, que propiciam as transições eletrônicas responsáveis pelas emissões fotoluminescentes. 13 Os íons terras-raras são comumente utilizados como dopantes. Ligantes cromóforos, por exemplo, a fenantrolina, com alta absortividade molar são usados a fim de facilitar tais transições eletrônicas através do efeito antena.…”

Section: Introductionunclassified

“…No processo, há transferência de energia do ligante para os íons terrasraras, possibilitando a emissão. 13,14 Este trabalho tem como objetivo sintetizar uma ferrita de Para a síntese do core-shell 0,5 mmol de EuCl 3 .6H 2 O e 2 mmol de 1,10-fenantrolina foram solubilizados em uma mistura de metanol e água. 1 g de CoFe 2 O 4 foi adicionada à esta solução, sonicando por 5 min.…”

Section: Introductionunclassified

Síntese e Caracterização de Nanopartículas de CoFe 2O4@SiO2:phen:Eu+3 com Propriedades Magnéticas e Luminescentes

et al. 2020

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Materiais com propriedades magnéticas e luminescentes possuem amplas aplicações biomédicas. A ferrita de cobalto (CoFe2O4) destaca-se devido a sua alta estabilidade e magnetização. A fi de aumentar a biocompatibilidade e conferir a luminescência, este material pode ser recoberto por dióxido de silício (SiO2) contendo íons európio. Assim, o trabalho tem por fialidade recobrir o CoFe2O4 (core) com SiO2 e íons európio (III) (shell). As amostras foram caracterizadas estruturalmente por DRX e apresentaram sistema monofásico. E a exposição das amostras à radiação eletromagnética e ao campo magnético confimou a obtenção do material com ambas as propriedades de interesse.

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Luminescent and Magnetic Properties of Fe3O4@SiO2:phen:Eu3+

Cited by 18 publications

References 32 publications

Synthesis, characterization and cytotoxicity evaluation of magnetic nanosilica in L929 cell line

Synthesis, characterization and cytotoxicity evaluation of magnetic nanosilica in L929 cell line

Magnetic Solid-Phase Microextraction for Lead Detection in Aqueous Samples Using Magnetite Nanoparticles

Síntese e Caracterização de Nanopartículas de CoFe 2O4@SiO2:phen:Eu+3 com Propriedades Magnéticas e Luminescentes

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