Preparation of polyaminated Fe3O4@chitosan core-shell magnetic nanoparticles for efficient adsorption of phosphate in aqueous solutions

Fu, Chun‐Chieh; Tran, Hai Nguyen; Chen, Xing-Han; Juang, Ruey‐Shin

doi:10.1016/j.jiec.2019.11.033

Cited by 75 publications

(20 citation statements)

References 55 publications

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“…In general, these results are consistent with results published by Khmara et al and Fu et al, who describe a similar effect of reduced Ms in chitosan functionalized magnetic nanoparticles [ 44 , 45 ]. Gregorio-Jauregui et al obtained values of magnetic saturation of chitosan-coated magnetic nanoparticles (CMNP) of around 65.6 ± 0.1 emu/g [ 46 ].…”

Section: Resultssupporting

confidence: 93%

“…Lower saturation magnetization of MC1 microparticles could be explained with TEM analysis, where the structure of magnetic multi-cores homogeneously dispersed in chitosan is clearly visible; otherwise, a different magnetic core-chitosan shell structure is observed in MC2 microparticles, leading to higher saturation magnetization of the microparticles. [44,45]. Gregorio-Jauregui et al obtained values of magnetic saturation of chitosan-coated magnetic nanoparticles (CMNP) of around 65.6 ± 0.1 emu/g [46].…”

Section: Figure 5 Magnetization Curves Of Chitosan Functionalized Magnetic Nanoparticles In Comparison Withmentioning

confidence: 99%

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Development of Chitosan Functionalized Magnetic Nanoparticles with Bioactive Compounds

2020

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In this study, magnetic maghemite nanoparticles, which belong to the group of metal oxides, were functionalized with chitosan, a non-toxic, hydrophilic, biocompatible, biodegradable biopolymer with anti-bacterial effects. This was done using different synthesis methods, and a comparison of the properties of the synthesized chitosan functionalized maghemite nanoparticles was conducted. Characterization was performed using scanning electron microscopy (SEM) and vibrating sample magnetometry (VSM). Characterizations of size distribution were performed using dynamic light scattering (DLS) measurements and laser granulometry. A chitosan functionalization layer was confirmed using potentiometric titration on variously synthesized chitosan functionalized maghemite nanoparticles, which is important for further immobilization of bioactive compounds. Furthermore, after activation of chitosan functionalized maghemite nanoparticles with glutaraldehyde (GA) or pentaethylenehexamine (PEHA), immobilization studies of enzyme cholesterol oxidase (ChOx) and horseradish peroxidase (HRP) were conducted. Factors influencing the immobilization of enzymes, such as type and concentration of activating reagent, mass ratio between carrier and enzyme, immobilization time and enzyme concentration, were investigated. Briefly, microparticles made using the chitosan suspension cross-linking process (MC2) proved to be the most suitable for obtaining the highest activity of immobilized enzyme, and nanoparticles functionalized with chitosan using the covalent binding method (MC3) could compete with MC2 for their applications.

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Section: Resultssupporting

confidence: 93%

Section: Figure 5 Magnetization Curves Of Chitosan Functionalized Magnetic Nanoparticles In Comparison Withmentioning

confidence: 99%

Development of Chitosan Functionalized Magnetic Nanoparticles with Bioactive Compounds

2020

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“…Recent literature has reported the fabrication of composites based on chitosan as bio-supports and modified with different nanomaterials such as FeO and TiO 2 nanoparticles. Among the explored nanocomposites are found, cross-linked magnetic ethylenediaminetetraacetic acid (EDTA)/chitosan/TiO 2 , chitosan modified with N, S-doped TiO 2 , magnetic thiourea-chitosan, and polyaminated Fe 3 O 4 @chitosan core–shell magnetic nanoparticles . Adsorption experiments in aqueous solutions using chitosan composites have shown maximum adsorption capacities up to 58.6, 16.6, 6.1, 2.5, 1.2, and 0.9 mg/g for removal of benzene, toluene, naphthalene, phenanthrene, acenaphthylene, and fluorene, respectively. , Besides, these methodologies are complex due to the use of more toxic chemicals such as hexane, methanol, and ethanol, high energy consumption due to the implementation of temperature, and longer procedures of synthesis up to 12 h. , To the best of our knowledge, no studies are exploring the combination of FeO and TiO 2 nanoparticles (Ch-FeO/TiO 2 ).…”

Section: Introductionmentioning

confidence: 99%

Ionic Cross-Linking Fabrication of Chitosan-Based Beads Modified with FeO and TiO₂ Nanoparticles: Adsorption Mechanism toward Naphthalene Removal in Seawater from Cartagena Bay Area

et al. 2020

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Polycyclic aromatic hydrocarbons (PAHs) are complex molecules produced by the thermal decomposition of organic matter in anthropogenic activities. Novel composites with enhanced physicochemical properties aim to overcome limitations such as adsorption capacity, affinity, and stability for PAHs adsorption. Composites based on chitosan are promising due to the good biocompatibility and adsorption properties. This study focuses on the facile preparation of chitosan beads modified with iron oxide (FeO) and titanium dioxide (TiO 2 ) nanoparticles via ionic cross-linking (Ch-FeO/TiO 2 ). FeO and TiO 2 were synthesized performing co-precipitation and green chemistry methods, respectively. The characterization evidenced the formation of Ch-FeO/TiO 2 with good crystallinity, excellent thermal stability, and superparamagnetic response, attributed to the presence of FeO and TiO 2 nanoparticles. High thermal stability up to 270 °C was related to the cross-linked chitosan network. The enhanced adsorption mechanism of Ch-FeO/TiO 2 was determined by removing naphthalene from water and seawater samples. The Ch-FeO/TiO 2 showed a higher adsorption capacity of 33.1 mg/g compared to 29.8 mg/g of the unmodified chitosan (un-Ch) beads. This is due to the higher functional surface area of 27.13 m 2 /g, compared to that of 0.708 m 2 /g for un-Ch. We found a rapid adsorption rate of 240 min and the maximum adsorption capacity of 149.3 mg/g for Ch-FeO/TiO 2 . A large number of actives sites allows for increasing the naphthalene molecules interaction. Adsorption in seawater samples from Cartagena Bay (Colombia) exhibits an outstanding efficiency of up to 90%. These results suggest a promising, cheap, and environmentally friendly composite for remediation of water sources contaminated with complex compounds.

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“…Fe 3 O 4 magnetic nanoparticles (MNPs) were constructed by the chemical co-precipitation method. 34 Approximately 1.7 g of Fe( ii ) and 4.75 g of Fe( iii ) salts were dissolved in deionized water (200 ml). The mixture was stirred at 60 °C under N 2 atmosphere, then 7.5 ml of NH 3 solution was added.…”

Section: Methodsmentioning

confidence: 99%

La(OH)₃ nanoparticles immobilized on Fe₃O₄@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

2021

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Preparation of polyaminated Fe3O4@chitosan core-shell magnetic nanoparticles for efficient adsorption of phosphate in aqueous solutions

Cited by 75 publications

References 55 publications

Development of Chitosan Functionalized Magnetic Nanoparticles with Bioactive Compounds

Development of Chitosan Functionalized Magnetic Nanoparticles with Bioactive Compounds

Ionic Cross-Linking Fabrication of Chitosan-Based Beads Modified with FeO and TiO₂ Nanoparticles: Adsorption Mechanism toward Naphthalene Removal in Seawater from Cartagena Bay Area

La(OH)₃ nanoparticles immobilized on Fe₃O₄@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

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Preparation of polyaminated Fe3O4@chitosan core-shell magnetic nanoparticles for efficient adsorption of phosphate in aqueous solutions

Cited by 75 publications

References 55 publications

Development of Chitosan Functionalized Magnetic Nanoparticles with Bioactive Compounds

Development of Chitosan Functionalized Magnetic Nanoparticles with Bioactive Compounds

Ionic Cross-Linking Fabrication of Chitosan-Based Beads Modified with FeO and TiO2 Nanoparticles: Adsorption Mechanism toward Naphthalene Removal in Seawater from Cartagena Bay Area

La(OH)3 nanoparticles immobilized on Fe3O4@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

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Ionic Cross-Linking Fabrication of Chitosan-Based Beads Modified with FeO and TiO₂ Nanoparticles: Adsorption Mechanism toward Naphthalene Removal in Seawater from Cartagena Bay Area

La(OH)₃ nanoparticles immobilized on Fe₃O₄@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde