Silica coating of iron oxide magnetic nanoparticles by reverse microemulsion method and their functionalization with cationic polymer P(NIPAm-co-AMPTMA) for antibacterial vancomycin immobilization

Increasing the biocompatibility, cellular uptake, and magnetic heating performance of ferromagnetic iron-oxide magnetic nanoparticles (F-MNPs) is clearly required to efficiently induce apoptosis of cancer cells by magnetic hyperthermia (MH). Thus, F-MNPs were coated with silica layers of different thicknesses via a reverse microemulsion method, and their morphological, structural, and magnetic properties were evaluated by multiple techniques. The presence of a SiO2 layer significantly increased the colloidal stability of F-MNPs, which also enhanced their heating performance in water with almost 1000 W/gFe as compared to bare F-MNPs. The silica-coated F-MNPs exhibited biocompatibility of up to 250 μg/cm2 as assessed by Alamar Blues and Neutral Red assays on two cancer cell lines and one normal cell line. The cancer cells were found to internalize a higher quantity of silica-coated F-MNPs, in large endosomes, dispersed in the cytoplasm or inside lysosomes, and hence were more sensitive to in vitro MH treatment compared to the normal ones. Cellular death of more than 50% of the malignant cells was reached starting at a dose of 31.25 μg/cm2 and an amplitude of alternating magnetic field of 30 kA/m at 355 kHz.

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Preparation and physical characterization of cobalt iron oxide magnetic nanoparticles loaded polyvinyl alcohol

Journal of Thermoplastic Composite Materials ◽

10.1177/0892705720985577 ◽

2021 ◽

pp. 089270572098557

Author(s):

M Abu-Abdeen ◽

O Saber ◽

E Mousa

Keyword(s):

Iron Oxide ◽

Magnetic Nanoparticles ◽

Polyvinyl Alcohol ◽

Saturation Magnetization ◽

Polymer Films ◽

Magnetic Hysteresis ◽

Thermal Method ◽

Cobalt Iron Oxide ◽

Cobalt Iron ◽

Iron Oxide Magnetic Nanoparticles

A solvent thermal method which depends on a thermal process under critical temperature and pressure was used to prepare cobalt iron oxide magnetic nanoparticles with a molar ratio 2. The prepared particles were in the form of nanoparticles with diameter ranging from 5 to 10 nm and with amorphous structure. Magnetic hysteresis behavior with saturation magnetization 36.31 emu/g and coercivity 4 Oe were observed for the nanoparticles. Polyvinyl alcohol was loaded with different concentrations of cobalt iron oxide nanoparticles using casting technique. Hysteresis loops for the polymer films were observed and both the saturation magnetization and coercivity were increased from 0.36 to 16.03 emu/g and 115 to 293 Oe for samples containing 5 and 20 wt% of nanoparticles, respectively. The elastic modulus of films was increased from 2.7 to 4.9 GPa for unloaded and loaded samples with 20 wt%, respectively. The storage modulus of the polymer films was found to obey the percolation behavior.

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Click Synthesis of Hydrophilic Maltose-Functionalized Iron Oxide Magnetic Nanoparticles Based on Dopamine Anchors for Highly Selective Enrichment of Glycopeptides

ACS Applied Materials & Interfaces ◽

10.1021/acsami.5b06991 ◽

2015 ◽

Vol 7 (44) ◽

pp. 24670-24678 ◽

Cited By ~ 70

Author(s):

Changfen Bi ◽

Yingran Zhao ◽

Lijin Shen ◽

Kai Zhang ◽

Xiwen He ◽

...

Keyword(s):

Iron Oxide ◽

Magnetic Nanoparticles ◽

Selective Enrichment ◽

Iron Oxide Magnetic Nanoparticles ◽

Click Synthesis

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Fe3O4 Magnetic Nanoparticles: Characterization and Performance Exemplified by the Degradation of Methylene Blue in the Presence of Persulfate

Journal of Advanced Oxidation Technologies ◽

10.1515/jaots-2016-0105 ◽

2016 ◽

Vol 19 (1) ◽

Cited By ~ 2

Author(s):

Chang-Mao Hung ◽

Chiu-Wen Chen ◽

Yu-Zhe Jhuang ◽

Cheng-Di Dong

Keyword(s):

Methylene Blue ◽

Iron Oxide ◽

Magnetic Nanoparticles ◽

Fe3o4 Magnetic Nanoparticles ◽

Iron Oxide Magnetic Nanoparticles ◽

Nanoparticles Characterization ◽

And Performance

AbstractIn this study, the oxidation of methylene blue (MB) over iron oxide magnetic nanoparticles (Fe

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Synthesis of BaAl12O19:Mn2+ nanophosphors by a reverse microemulsion method and its photoluminescence properties under VUV excitation

Journal of Luminescence ◽

10.1016/j.jlumin.2006.01.311 ◽

2007 ◽

Vol 122-123 ◽

pp. 866-868 ◽

Cited By ~ 14

Author(s):

Yu Hua Wang ◽

Feng Li

Keyword(s):

Reverse Microemulsion ◽

Photoluminescence Properties ◽

Microemulsion Method ◽

Reverse Microemulsion Method

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Luminescent properties of europium-doped (H3O)Y3F10·xH2O nanocrystals

Journal of Materials Chemistry C ◽

10.1039/c5tc02527c ◽

2015 ◽

Vol 3 (38) ◽

pp. 9955-9963 ◽

Cited By ~ 6

Author(s):

Cyril Caron ◽

Denis Boudreau ◽

Anna M. Ritcey

Keyword(s):

Single Crystal ◽

Luminescent Properties ◽

Reverse Microemulsion ◽

Microemulsion Method ◽

Reverse Microemulsion Method

Low-polydispersity europium-doped (H3O)Y3F10·xH2O single-crystal nanoparticles can be prepared via a simple reverse microemulsion method.

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Application of Immobilized Fungi Phanerochaete chrysosporium in Removal of Heavy-Metals from Wastewater

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.779-780.1674 ◽

2013 ◽

Vol 779-780 ◽

pp. 1674-1677 ◽

Cited By ~ 2

Author(s):

Dan Lian Huang ◽

Guang Ming Zeng ◽

Piao Xu ◽

Cui Lai ◽

Mei Hua Zhao ◽

...

Keyword(s):

Heavy Metals ◽

Iron Oxide ◽

Magnetic Nanoparticles ◽

Phanerochaete Chrysosporium ◽

High Efficiency ◽

Metal Removal ◽

Heavy Metal Removal ◽

Removal Of Heavy Metals ◽

Iron Oxide Magnetic Nanoparticles ◽

Ca Alginate

Immobilized microbe technologies are expected to be effectively used in wastewater treatment. Removal of heavy-metals from wastewater by immobilized Phanerochaete chrysosporium (Pc) with Ca-alginate and iron oxide magnetic nanoparticles (MNPs) was studied. The results showed that a biosorbent as Pc immobilized by Ca-alginate and iron oxide magnetic nanoparticles was successfully developed. And the iron oxide magnetic nanoparticles played an important role in the increase of biosorption capacity of Pc. Energy dispersive spectrometer (EDS) analysis confirmed that metal ions adsorbed to the surface of the biosorbents were partly transmitted to the interior of biosorbents, mainly embedded with iron oxide nanoparticles and Ca-alginate. Moreover, it was found that MNPs-Ca-alginate immobilized Pc showed a good affinity to various heavy metals, such as Pb(II), Zn(II), Cd(II) or Mg(II) and so on. The results proved the high efficiency of the biosorbents for heavy-metal removal and its potential application in the treatment of metal-containing wastewater.

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