Synthesis and characterization of magnetite nanoparticles functionalized with organophosphorus compounds and its application as an adsorbent for La (III), Nd (III) and Pr (III) ions from aqueous solutions

Molina, Lorena; Gaete, José; Alfaro, Ian; Ide, Viviana; Valenzuela, Fernando; Parada, José; Basualto, Carlos

doi:10.1016/j.molliq.2018.11.074

Cited by 32 publications

(9 citation statements)

References 42 publications

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“…Due to the unique size-dependent magnetic properties, IONs are used in a wide variety of fields, including nanocatalysis, all-optical switching devices, microwave absorption, environmental remediation, chemical and biological sensors, energy generation and storage, biomedicine and biotechnologies, etc. [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Among various IONs, magnetite (Fe 3 O 4 ) nanoparticles are one of the most promising, since they find application in such areas as high-density magnetic storage media, capacitor electrodes, development of sensors, ferrofluid, for absorption heavy metals [ 5 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ], have wide application in biotechnologies and biomedicine, for example, magnetic resonance imaging, hyperthermia, targeted delivery of drugs, detect and treat cancer [ 20 , 21 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure

et al. 2020

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Magnetite nanoparticles were synthesized by a simple thermal decomposition process, involving only iron (III) nitrate nonahydrate as a precursor, and hexadecylamine as a solvent and stabilizer at reaction temperatures varied from 200 to 380 °C. The results of the structural analysis showed that the average crystallite size depends on the reaction temperature and increases from 4.8 to 13.3 nm. The behavior of the coercivity indicates that all synthesized samples are single domain; herewith, it was found that the critical size corresponding to the transition to the superparamagnetic state at room temperature is about 9 nm. The effect of the reaction temperature on changes in the saturation magnetization was studied. It was found that the size effect in the MCD spectra is observed for the IVCT transition and one ISCT transition, and the influence of the reaction temperature on the change in the MCD spectra was discussed.

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Section: Introductionmentioning

confidence: 99%

Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure

et al. 2020

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“…Lately, iron oxide nanoparticles have been attracting interest as burning modifiers because their catalytic activity is higher than that of macroscopic scale catalysts. ,− Among their main characteristics, these nanoparticles could be obtained by a simple and efficient chemistry method. − Within this group of oxides, promising results have been reported using magnetite (Fe 3 O 4 NP s ) and maghemite (γ-Fe 2 O 3 NP s ) nanoparticles as catalysts for the thermal decomposition of AP. , …”

Section: Introductionmentioning

confidence: 99%

Mechanistic Insights into the Thermal Decomposition of Ammonium Perchlorate: The Role of Amino-Functionalized Magnetic Nanoparticles

et al. 2022

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This work reports the characterization and application of two promising nanocatalysts for the thermal decomposition of ammonium perchlorate (AP). To obtain these composite materials, magnetite nanoparticles (Fe 3 O 4 NP s ) were functionalized with two different amine derivative groups, tertiary amine (Fe 3 O 4 NP s -A1) and quaternary amine. X-ray photoelectron spectroscopy and differential scanning calorimetry provided mechanistic insights into the thermal decomposition of AP. Furthermore, tertiary and quaternary amine groups play a critical role, where the presence of an extra proton could favor an electron−proton transfer as the ratedetermining step. Moreover, Fe 3 O 4 NP s -A1 causes a diminution of the high-temperature decomposition of AP positively to 335 °C, increasing the energy release by 278 J g −1 and consequently affording the lowest activation energy (102 kJ mol −1 ), indicating a low degree of thermal stability, and accelerating the thermal decomposition of AP.

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“…The functionalization of magnetic nanoparticles is achieved by covering the surface of the nanoparticles by physical or chemical means. This method generates a new compound with a magnetic core which can be coated with an organic or inorganic layer, allowing it to have selective properties when used as an absorbent [ 10 , 12 ]. Although initially used for purposes of seeking to mitigate or solve a problem, there are concerns about the potential impact that these materials may have on the environment.…”

Section: Introductionmentioning

confidence: 99%

Toxicity of Modified Magnetite-Based Nanocomposites Used for Wastewater Treatment and Evaluated on Zebrafish (Danio rerio) Model

et al. 2022

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Magnetite-based nanocomposites are used for biomedical, industrial, and environmental applications. In this study, we evaluated their effects on survival, malformation, reproduction, and behavior in a zebrafish animal model. Nanoparticles were synthesized by chemical coprecipitation and were surface-functionalized with (3-aminopropyl) triethoxysilane (APTES), L-cysteine (Cys), and 3-(triethoxysilyl) propylsuccinic anhydride (CAS). All these nanocomposites were designed for the treatment of wastewater. Zebrafish embryos at 8 h post-fertilization (hpf) and larvae at 4 days post-fertilization (dpf) were exposed to the magnetic nanocomposites Fe3O4 MNP (magnetite), MNP+APTES, MNP+Cys, MNP+APTES+Cys, and MNP+CAS, at concentrations of 1, 10, 100, and 1000 µg/mL. Zebrafish were observed until 13 dpf, registering daily hatching, survival, and malformations. Behavior was tested at 10 dpf for larvae, and reproduction was analyzed later in adulthood. The results showed that the toxicity of the nanocomposites used were relatively low. Exploratory behavior tests showed no significant changes. Reproduction in adults treated during development was not affected, even at concentrations above the OECD recommendation. Given the slight effects observed so far, these results suggest that nanocomposites at the concentrations evaluated here could be a viable alternative for water remediation because they do not affect the long-term survival and welfare of the animals.

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Synthesis and characterization of magnetite nanoparticles functionalized with organophosphorus compounds and its application as an adsorbent for La (III), Nd (III) and Pr (III) ions from aqueous solutions

Cited by 32 publications

References 42 publications

Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure

Magnetic and Magneto-Optical Oroperties of Iron Oxides Nanoparticles Synthesized under Atmospheric Pressure

Mechanistic Insights into the Thermal Decomposition of Ammonium Perchlorate: The Role of Amino-Functionalized Magnetic Nanoparticles

Toxicity of Modified Magnetite-Based Nanocomposites Used for Wastewater Treatment and Evaluated on Zebrafish (Danio rerio) Model

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