Effect of the Deposition Conditions on the Anion Resin Exchange Precipitation of Indium(III) Hydroxide

Evsevskaya, N. P.; Пикурова, Е. В.; Сайкова, С. В.; Немцев, И. В.

doi:10.1021/acsomega.9b03877

Cited by 8 publications

(11 citation statements)

References 30 publications

(37 reference statements)

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“…The precipitation of metal hydroxides occurs at the resin-solution interface, namely on the resin beads. When the thickness of the surface deposit reaches 1-1.5 µm, it is exfoliated, and an individual product phase forms [39,40]. We used a polysaccharide, dextran-40, to obtain homogeneous nanoparticles with similar sizes and morphologies.…”

Section: Resultsmentioning

confidence: 99%

“…This process is conducted under easily controllable stationary conditions and allows obtaining homogeneous nanoparticles with uniform size and morphology without impurity ions. This method eliminates the use of expensive equipment and multiple washing steps [39,40]. The anion-exchange resin precipitation is conducted in the solution containing dextran-40 to prevent the aggregation of the as-obtained magnetic nanoparticles and control the particle size.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Nanoparticles Based on Cobalt Ferrite and Gold: Preparation and Characterization

Сайкова

Pavlikov

Трофимова

et al. 2021

Metals

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During the past few decades, hybrid nanoparticles (HNPs) based on a magnetic material and gold have attracted interest for applications in catalysis, diagnostics and nanomedicine. In this paper, magnetic CoFe2O4/Au HNPs with an average particle size of 20 nm, decorated with 2 nm gold clusters, were prepared using methionine as a reducer and an anchor between CoFe2O4 and gold. The methionine was used to grow the Au clusters to a solid gold shell (up to 10 gold deposition cycles). The obtained nanoparticles (NPs) were studied by X-Ray diffraction (XRD), transmission electron microscopy (TEM), Fourier-transform infrared (FT-IR) spectroscopy, X-Ray photoelectron spectroscopy (XPS) and UV-vis spectroscopy techniques. The TEM images of the obtained HNPs showed that the surface of cobalt ferrite was covered with gold nanoclusters, the size of which slightly increased with an increase in the number of gold deposition cycles (from 2.12 ± 0.15 nm after 1 cycle to 2.46 ± 0.13 nm after 10 cycles). The density of the Au clusters on the cobalt ferrite surface insignificantly decreased during repeated stages of gold deposition: 21.4 ± 2.7 Au NPs/CoFe2O4 NP after 1 cycle, 19.0 ± 1.2 after 6 cycles and 18.0 ± 1.4 after 10 cycles. The magnetic measurements showed that the obtained HNPs possessed typical ferrimagnetic behavior, which corresponds to that of CoFe2O4 nanoparticles. The toxicity evaluation of the synthesized HNPs on Chlorella vulgaris indicated that they can be applied to biomedical applications such as magnetic hyperthermia, photothermal therapy, drug delivery, bioimaging and biosensing.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid Nanoparticles Based on Cobalt Ferrite and Gold: Preparation and Characterization

Сайкова

Pavlikov

Трофимова

et al. 2021

Metals

View full text Add to dashboard Cite

show abstract

“…The precipitation of metal hydroxides occurs at the resin-solution interface, namely on the resin beads. When the thickness of the surface deposit reaches 1-1.5 μm, it is exfoliated, and an individual product phase forms [35,36]. We used a polysaccharide, dextran-40, to obtain homogeneous nanoparticles with similar sizes and morphologies.…”

Section: Resultsmentioning

confidence: 99%

“…This process is conducted under easily controllable stationary conditions and allows obtaining homogeneous nanoparticles with uniform size and morphology without impurity ions. This method eliminates the use of expensive equipment and multiple washing steps [35,36]. The anion-exchange resin precipitation is conducted in the solution containing dextran-40 to prevent the aggregation of the as-obtained magnetic nanoparticles and control the particle size.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Nanoparticles Based on Cobalt Ferrite and Gold: Preparation and Characterization

Сайкова¹,

Pavlikov²,

Трофимова³

et al. 2021

Preprint

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During the past few decades, hybrid nanoparticles (HNPs) based on a magnetic material and gold have attracted interest for applications in catalysis, diagnostics and nanomedicine. In this paper, magnetic CoFe2O4/Au HNPs with an average particle size of 10–20 nm decorated with 2-nm gold clusters were prepared using methionine as a reducer and an anchor between CoFe2O4 and gold. The obtained nanoparticles were studied by X-Ray diffraction (XRD), transmission electron microscopy (TEM), Fourier-transform infrared (FT-IR) spectroscopy and X-Ray photoelectron spectroscopy (XPS) and UV-Vis spectroscopy techniques. The TEM images of the HNPs obtained after one, six and ten gold deposition cycles showed that the surface of cobalt ferrite was covered with gold nanoclusters, which slightly increased with an increase in the number of gold deposition cycles (from 2.12 ± 0.15 nm after one cycle to 2.46 ± 0.13 nm after ten cycles) without any change in surface density. The magnetic measurements showed that the obtained HNPs possessed typical ferrimagnetic behaviour, which corresponds to that of CoFe2O4 nanoparticles. The toxicity evaluation of the synthesised HNPs on Chlorella vulgaris indicated that they can be applied to biomedical applications such as magnetic hyperthermia, photothermal therapy, drug delivery, bioimaging and biosensing.

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“…Reducing the ionic strength of the solution facilitates the production of particles identical in composition and size and containing no impurity ions. The obtained materials have a large surface area and high reactivity [22][23][24][25]34].…”

Section: The Effects Of Polysaccharides With Different Molar Masses O...mentioning

confidence: 99%

Copper Ferrite Nanoparticles Synthesized Using Anion Exchange Resin: Influence of Synthesis Parameters on the Cubic Phase Stability

Сайкова¹,

Pavlikov²,

Karpov³

et al. 2023

Preprint

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Copper ferrite attracts a lot of interest from researchers as a material with unique magnetic, optical, catalytic and structural properties. In particular, the magnetic properties of this material are structurally sensitive and can be tuned by changing the distribution of Cu and Fe cations in octahedral and tetrahedral positions by controlling synthesis parameters. In this study, we propose a new simple and convenient method for the synthesis of copper ferrite nanoparticles using a strongly basic anion exchange resin in OH form. The effect and possible mechanism of polysaccharides addition on the elemental composition, yield and particle size of CuFe2O4 is investigated and discussed. It is shown that anion exchange resin precipitation leads to a mixture of unstable at standard temperature cubic (c-CuFe2O4) and stable tetragonal (t-CuFe2O4) phases. The effect of the reaction conditions on the c-CuFe2O4 stability is studied by temperature-dependent XRD measurements and discussed in terms of the cations distribution, Jahn−Teller distortion and Cu2+ and oxygen vacancies in the copper ferrite lattice. The obtained differences in the values of saturation magnetization and the coercive force of prepared samples are explained with a reference to variations in the particle sizes and the structural characteristics of copper ferrite.

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Effect of the Deposition Conditions on the Anion Resin Exchange Precipitation of Indium(III) Hydroxide

Cited by 8 publications

References 30 publications

Hybrid Nanoparticles Based on Cobalt Ferrite and Gold: Preparation and Characterization

Hybrid Nanoparticles Based on Cobalt Ferrite and Gold: Preparation and Characterization

Hybrid Nanoparticles Based on Cobalt Ferrite and Gold: Preparation and Characterization

Copper Ferrite Nanoparticles Synthesized Using Anion Exchange Resin: Influence of Synthesis Parameters on the Cubic Phase Stability

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