Preparation of hollow magnetite microspheres and their applications as drugs carriers

Márquez, Francisco; Herrera, Gloria María Doria; Campo, Teresa Martínez del; Cotto, María; Duconge, José; Sanz, J. M.; Elizalde, E.; Perales, Óscar; Morant, Carmen

doi:10.1186/1556-276x-7-210

Cited by 40 publications

(23 citation statements)

References 44 publications

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“…4b). The SPIONs and chitosan-coated SPIONs were crystalline in nature as they have shown reflection pattern in XRD at 220, 311, 400, 511 and 440, and the shape was cubic spinel structure of Fe 3 O 4 (JCPDS 85-1436) (Marquez et al 2012) (Fig. 5a, b).…”

Section: Characterization Of Spions and Chitosan-coated Spionsmentioning

confidence: 99%

Utilization of chitosan-coated superparamagnetic iron oxide nanoparticles for chromium removal

et al. 2018

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Superparamagnetic iron oxide nanoparticles (SPIONs) have been widely used for their versatility, while it is coated with a biopolymer like chitosan that adds attraction and also increases its applications. In this study, SPION was synthesized by chemical co-precipitation method, characterized using various analytical techniques like UV-Vis, FTIR, SEM, EDX, TEM, AFM, XRD, zeta potential and Raman spectroscopy analysis. Chitosan was coated onto the SPIONs and used for water treatment to remove chromium (450 ppm concentration). Chitosan-coated SPIONs were found to remove about 80% of chromium. Freundlich model was found to be fitting better for the current study.

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Section: Characterization Of Spions and Chitosan-coated Spionsmentioning

confidence: 99%

Utilization of chitosan-coated superparamagnetic iron oxide nanoparticles for chromium removal

et al. 2018

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“…The obtained spectra were compared to the spectra of the corresponding pure surfactants and show a good agreement. Moreover, a strong stretching vibration absorption band at around 560 cm −1 , characteristic for magnetite,22 can be observed.…”

Section: Resultsmentioning

confidence: 96%

Quantitative Recovery of Magnetic Nanoparticles from Flowing Blood: Trace Analysis and the Role of Magnetization

Schumacher

Herrmann

Bubenhofer

et al. 2013

Adv Funct Materials

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Magnetic nanomaterials fi nd increasing application as separation agents to rapidly isolate target compounds from complex biological media (i.e., blood purifi cation). The responsiveness of the used materials to external magnetic fi elds (i.e., their saturation magnetization) is one of the most critical parameters for a fast and thorough separation. In the present study, magnetite (Fe 3 O 4 ) and non-oxidic cementite (Fe 3 C) based carbon-coated nanomagnets are characterized in detail and compared regarding their separation behavior from human whole blood. A quantifi cation approach for iron-based nanomaterials in biological samples with strong matrix effects (here, salts in blood) based on platinum spiking is shown. Both materials are functionalized with polyethyleneglycol (PEG) to improve cytocompatibility (confi rmed by cell toxicity tests) and dispersability. The separation performance is tested in two setups, namely under stationary and different fl ow-conditions using fresh human blood. The results reveal a superior separation behavior of the cementite based nanomagnets and strongly suggest the use of nanomaterials with high saturation magnetizations for magnetic retention under common blood fl ow conditions such as in veins.

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“…XPS was employed to confirm each step of the synthesis process and to examine the chemical composition. In Figure 3( 25 The XPS spectrum of mag@silica is presented in Figure 3(b). The Si 2s and Si 2p peaks were seen only after coating the magnetite with mesoporous silica.…”

Section: Characterization Of the Sorbentmentioning

confidence: 98%

Copper Ferrocyanide Functionalized Core–Shell Magnetic Silica Composites for the Selective Removal of Cesium Ions from Radioactive Liquid Waste

Lee

Yang

et al. 2016

j nanosci nanotechnol

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The copper ferrocyanide functionalized core-shell magnetic silica composite (mag@silica-CuFC) was prepared and was found to be easily separated from aqueous solutions by using magnetic field. The synthesized mag@silica-CuFC composite has a high sorption ability of Cs owing to its strong affinity for Cs as well as the high surface area of the supports. Cs sorption on the mag@silica-CuFC composite quickly reached the sorption equilibrium after 2 h of contact time. The effect of the presence of salts with a high concentration of up to 3.5 wt% on the efficiency of Cs sorption onto the composites was also studied. The maximum sorption ability was found to be maintained in the presence of up to 3.5 wt% of NaCl in the solution. Considering these results, the mag@silica-CuFC composite has great potential for use as an effective sorbent for the selective removal of radioactive Cs ions.

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Preparation of hollow magnetite microspheres and their applications as drugs carriers

Cited by 40 publications

References 44 publications

Utilization of chitosan-coated superparamagnetic iron oxide nanoparticles for chromium removal

Utilization of chitosan-coated superparamagnetic iron oxide nanoparticles for chromium removal

Quantitative Recovery of Magnetic Nanoparticles from Flowing Blood: Trace Analysis and the Role of Magnetization

Copper Ferrocyanide Functionalized Core–Shell Magnetic Silica Composites for the Selective Removal of Cesium Ions from Radioactive Liquid Waste

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