Preparation of Ni0.5Zn0.5Fe2O4/SiO2 nanocomposites and their adsorption of bovine serum albumin

Liu, Ruijiang; Shen, Xiangqian; Jiang, Chengtao; Song, Fuzhan; Li, Hongxia

doi:10.1016/j.jallcom.2011.09.020

Cited by 20 publications

(8 citation statements)

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“…In the case of Ferro‐CSNPs the pore size is almost an order of magnitude larger than for Ferro‐IS. According to the available literature, protein could be linked to ferrogels by occupying the gel's pores and interacting with PVA chains . Thus it is clear that the structure of PVA ferrogel plays a key role in the efficiency of protein adsorption, in agreement with other authors .…”

Section: Resultssupporting

confidence: 85%

Fabrication of ferrogels using different magnetic nanoparticles and their performance on protein adsorption

Gonzalez

Nicolás

Ferreira

et al. 2013

Polymer International

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Magnetic biomaterials were prepared using magnetite and chitosan‐coated magnetite nanoparticles (CSNPs) dispersed in poly(vinyl alcohol) gels. Two different methods were developed to obtain ferrogels: in situ co‐precipitation of magnetite (Ferro‐IS) and by adding previously synthesized CSNPs to the neat matrix (Ferro‐CSNPs). In both cases, the crosslinking was carried out by freezing − thawing (F‐T). The as‐prepared materials as well as precursor CSNPs were characterized by Fourier transform infrared spectroscopy, electronic microscopy (scanning and transmission), X‐ray diffraction, ζ potential, dynamic light scattering, thermogravimetric analysis, differential scanning calorimetry and magnetic properties. The performance of these gels as protein adsorbents was evaluated. Batch adsorption experiments were carried out using bovine serum albumin (BSA) as a model. Substantially different adsorption behaviour was found using Ferro‐IS and Ferro‐CSNPs. This was assigned to dissimilar bonding mechanisms of BSA to the ferrogel matrix. Hence, biomaterials potentially useful in drug delivery as well as in protein purification fields may be prepared by a relatively simple, non‐toxic and low cost method. © 2013 Society of Chemical Industry

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Section: Resultssupporting

confidence: 85%

Fabrication of ferrogels using different magnetic nanoparticles and their performance on protein adsorption

Gonzalez

Nicolás

Ferreira

et al. 2013

Polymer International

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“…[9] due to the reason being these llers promotes the catalytic process for tuning the electromagnetic behavior. In latest years studies is being carried for the enhancement of the properties (electromagnetic) of ferrite magnetic material via using SiO 2 as ller for Example Ni 0.65 Zn 0.35 Cu 0.1 Fe 1.9 O 4 -SiO 2 [10,11] Co 0.5 Zn 0.5 Fe 2 O 4 -SiO 2 [12], Ni 0.5 Zn 0.5 Fe 2 O 4 -SiO 2 [13][14][15][16][17][18][19][20], Co 0.84 Fe 2.16 O 4 -SiO 2 [21]. The increasing demand of these materials in the area of chemical, ceramic, chromatographic, coating, catalysis, energy, emulsi er, organic science etc needs the most e cient and dependable synthesis method for the production of these Nano composite materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of crystalline Nano silica from rice husk (agricultural waste) and its magnetic composites

Hussain

Singh

Kumar

et al. 2022

Preprint

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A cost-effective and environmentally friendly technology was used to make crystalline Nano silica (SiO2) from rice husk. Crystalline Amos Nano silica, ferrites, and PVDF were used to make a magnetic nanocomposite utilising injection moulding technology. The crystalline form of silica is revealed via XRD pattern analysis. SEM studies revealed that the particle size of SiO2 was extremely tiny, implying that crystalline Nano silica was formed from the rice husk. The absorption peaks of the Si–Oi–Si (silanol) functional group are seen in FTIR spectra. The UV-Spectrometer reveals higher absorption of SiO2 in UV region which suggest it uses as catalytic booster while lower absorption in the visible region is seen. Direct and indirect band gap of the sample is obtained using Tauc plot. Magnetic measurement shows nano silica is diamagnetic. Due to the presence of ferrite in the nanocomposite, the crystalline Nano silica-Ferrite-PVDF nanocomposite is ferromagnetic and is also revealed by hysteresis loop. Nanocomposite's magnetic hysteresis loop demonstrates that the materials can be employed as polymer magnets derived from natural source. In this paper, the physical characteristics of crystalline Nano silica and its composites with PVDF and ferrite are investigated. The findings of this study could aid in the utilisation of Nano silica materials that have been developed in various technological applications.

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“…In technological applications as telecommunications, transformers, and microwave devices, etc., Ni-Zn ferrites now play a crucial role. Spinel Ni-Zn ferrites are commonly employed in several devices as core materials, high-frequency transformer-core ferrites, frequency antennas, RAMs (radar absorption materials), and electrical components [29][30][31][32]. Lithium ferrite substituted with zinc has extended importance because it possesses high saturation magnetization, which is found to be suitable in memory core applications and microwave communication [29].Many researchers work on the 2-phase dielectric-polymer, or magnetic-polymer composites are extensively studied within the last years.…”

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confidence: 99%

Investigation of AC-Measurements of Epoxy/Ferrite Composites

et al. 2020

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A pure ferrite and epoxy samples as well as the epoxy/ferrite composites with different 20 wt.%, 30 wt.%, 40 wt.%, and 50 wt.% weight ferrite contents have been prepared by the chemical co-precipitation method. AC-conductivity and dielectric properties such as the dielectric constant and dielectric loss of the prepared samples have been studied. The obtained results showed that the samples had a semiconductor behavior. The dielectric constant of the composites has been calculated theoretically using several models. For the composite sample that contains 20 wt.% of ferrites, these models give satisfactory compliance, while for the composite samples with a higher percentage of nanofillers, more than 30 wt.% theoretical results do not coincide with experimental data. The investigated polymer has very low conductivity, so this type of polymer can be useful for high-frequency applications, which can reduce the losses caused by eddy current. Thus, the prepared samples are promising materials for practical use as elements of microwave devices.Nanomaterials 2020, 10, 492 2 of 16 Nanotechnology can be an excellent tool in the study, preparation, research, and use of new perspective materials, as well as in solving the problem of particles sizes in the range of 1-100 nm, where unusual phenomena allow new applications [2][3][4]. Tiny nanoparticles with diameters of some nanometers usually look like molecules. Therefore, the atomic and electronic structures of such small nanoparticles possess different features, certainly not the same as those of the bulk materials. The size-dependent abilities of nanoparticles include electronic, magnetic, optical, and chemical substance characteristics. Nanoparticles can be crystalline or amorphous [5].Nanosized ferrites could be prepared by many methods, including mechanized milling, ultrasonic cavitation method, radio rate of recurrence plasma, hydrothermal technique, reverse micelle method, sol-gel technique, citrate precursor, and co-precipitation technique [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. It is advisable to possess a synthesis method that allows for governor on the nanoparticle dimension and produces nanoparticles having a significant size distribution [2]. The chemical substance co-precipitation method is the most excellent ideal for the formation of nanoparticles due to its ease and much-improved handle over the crystallite dimension and other qualities of the components [22]. Also, lately, magnetic composites comprising magnetic materials alongside polymers comprise a new era of multifunctional components that mix the properties from the constituents; these components are known as magneto-polymeric components [23].The characteristics of ferrites are highly susceptible to methodical handling, sintering conditions, and impurity. Nickel-zinc ferrite is one of the first widely used ferrite produced for an open range of applications that recognizes to high saturation magnetization, high resistance, high Curie temperature, high chemical stability, low coerciv...

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Preparation of Ni0.5Zn0.5Fe2O4/SiO2 nanocomposites and their adsorption of bovine serum albumin

Cited by 20 publications

References 50 publications

Fabrication of ferrogels using different magnetic nanoparticles and their performance on protein adsorption

Fabrication of ferrogels using different magnetic nanoparticles and their performance on protein adsorption

Synthesis and characterization of crystalline Nano silica from rice husk (agricultural waste) and its magnetic composites

Investigation of AC-Measurements of Epoxy/Ferrite Composites

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