Microwave assisted synthesis of oleic acid modified magnetite nanoparticles for benzene adsorption

Masuku, Makhosazana; Ouma, Linda; Pholosi, Agnes

doi:10.1016/j.enmm.2021.100429

Cited by 21 publications

(12 citation statements)

References 65 publications

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“…Apart from these methods, laser ablation, ion sputtering, laser pyrolysis, flow injection technique, microwave-assisted [45], solvo-thermal [46], sonochemical, polyol [47], electro-deposition [48], combustion are methods which are being implemented recently for better quality nanoparticles [49].…”

Section: Other Methodsmentioning

confidence: 99%

Magnetic Nanoparticles for Drug Delivery Applications

Patel¹

2023

Magnetic Nanoparticles for Biomedical Applications

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Magnetic nanoparticles (MNPs) possess different structural, magnetic and dielectric properties compared to bulk magnetic particles and they have found potential applications in the biomedical field (due to their response to applied magnetic field) including MRI, targeted drug delivery, bio sensors, tissue engineering, cancer therapy, and diagnosis, biomaterial coating devices, hyperthermia, cell selection and separation, magnetorelaximetry, antibacterial agent, biomolecules extraction, immunoassay, lab-on-a-chip etc. The synthesis of MNPs can be done by various methods pertaining to the application one is interested in. In present chapter we discuss basic properties (surface and magnetic) of magnetic nano particles and their biomedical applications.

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Section: Other Methodsmentioning

confidence: 99%

Magnetic Nanoparticles for Drug Delivery Applications

Patel¹

2023

Magnetic Nanoparticles for Biomedical Applications

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“…The four responses of the study comprises % Fe content and adsorption capacity (mg/g) of BTX, as the results are shown in Table 1. The variables were chosen in accordance with our previous studies 20 . The independent variables used were varied between the lower (− 1) and the higher (+ 1) levels.…”

Section: Procedures Synthesis Of the Magnetite-oleic Acid Composites ...mentioning

confidence: 99%

“…One essential organic surfactant that can coat magnetite to reduce agglomeration is oleic acid. The polar head group on the oleic acid is attached on the magnetite surface and the long non-polar hydrophobic alkyl tail extends into the solution causing magnetite to be hydrophobic and dispersible in organic solvents, thus providing steric stability to the magnetite nanoparticles 19,20 .…”

mentioning

confidence: 99%

“…This is ascribed to the efficient heating to the desired temperature, high phase purity, increased reaction kinetics, reduced synthesis time, easy functionalization, high crystallinity, and reproducibility [24][25][26][27][28] . However, the limiting factor associated with MNPs is the optimization of process variables in the formation of MNPs with high iron content required for magnetic functionality in the chemical composition of the nanocomposite, ease of separation desirable for adsorption process 20,29 , and other applications 30 .…”

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confidence: 99%

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Optimization studies of BTX removal by magnetite coated oleic acid obtained from microwave-assisted synthesis using response surface methodology

Masuku

Ouma

Sanni

et al. 2022

Sci Rep

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Benzene, toluene and xylene (BTX) are volatile organic compounds released into the environment, that require urgent removal to avoid adverse health effects. In this work, the modelling and optimization of the preparation factors for magnetite coated oleic acid (MNP-OA) composite from microwave synthesis using response surface methodology were conducted to maximize BTX removal, and iron content. The influence of five crucial preparation variables: the Fe3+/Fe2+ solution volumes, microwave power, volume of ammonia water (VAW), reaction time and volume of oleic acid (VOA) on the iron content (% Fe), and BTX adsorption capacity were investigated. The analysis of variance results revealed that VOA and VAW were the most influential factors for high % Fe content, and improved BTX removal. The % Fe, and BTX adsorption capacity for MNP-OA composite at optimized experimental conditions were estimated to be 85.57%, 90.02 mg/g (benzene), 90.07 mg/g (toluene), and 96.31 mg/g (xylene).

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“…Thus, a more stable system is achieved due to the additional effect of steric repulsion, shielding of dipole interactions, and van der Waals interactions that exist among naked nanoparticles . A diverse variety of chemical agents have been used because of their surface functionalization for different purposes, representing amino acids, silane derivatives, , phosphoric acid derivatives, − and carboxylic acids. − Specifically, the amino functional group gives nanoparticles a specific chemical interaction with certain substrates and, in addition, provides the possibility of subsequent chemical modifications.…”

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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Microwave assisted synthesis of oleic acid modified magnetite nanoparticles for benzene adsorption

Cited by 21 publications

References 65 publications

Magnetic Nanoparticles for Drug Delivery Applications

Magnetic Nanoparticles for Drug Delivery Applications

Optimization studies of BTX removal by magnetite coated oleic acid obtained from microwave-assisted synthesis using response surface methodology

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

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