THE 3 HOURS-HYDROTHERMAL SYNTHESIS OF HIGH SURFACE AREA SUPERPARAMAGNETIC Fe3O4 CORE-SHELL NANOPARTICLES

Sari, Esty Octiana; Fadli, Ahmad; Amri, Amun

doi:10.17146/jsmi.2017.19.1.4111

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…In term of drug delivery, the surface area and the pore volume shows the capacity of magnetite nanoparticle to absorb drug. The surface area and pore volume of samples (12 h synthesis) are quite smaller than magnetite nanoparticle was made by the same method for 3.5 h for about 650.757 m 2 /g [16]. This is because the particle size at 3 hours of synthesis time is smaller than 12 hours of synthesis time and its structure is amorphous.…”

Section: Resultsmentioning

confidence: 95%

Superparamagnetic Nanoparticles with Mesoporous Structure Prepared through Hydrothermal Technique

Fadli

Amri

Sari

et al. 2020

MSF

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Magnetite nanoparticles have been successfully prepared by hydrothermal method from FeCl3 as starting material. The properties and morphology of the products with different synthesis time and FeCl3 concentration were investigated. Firstly, the FeCl3 with concentration of 0.05 – 0.15 M and 0.10 M sodium citrate as well as 0.15 M were mixed with distilled water containing 0.1 g polyethylene glycol. Subsequenly, the solution was transferred into a Teflon-lined autoclave and it heated into an oven at 210°C for 12 hours. The black precipitate that formed was separated by a bar magnet, then washed with water and ethanol, and dried at 60°C overnight. The magnetite formation begun at 3.5 hours synthesis time with crystal diameter in range of 9.4-30 nm. The crystallinity and crystal size of magnetite increased with reaction time and concentration of FeCl3. The magnetite nanoparticles had a mesoporous structure and bigger pores at higher concentration. The saturation magnetization (Ms) of magnetite was in the range of 59 – 81 Emu/g with coercivity value was near to zero showing that magnetite nanoparticle had superparamagnetic properties.

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Section: Resultsmentioning

confidence: 95%

Superparamagnetic Nanoparticles with Mesoporous Structure Prepared through Hydrothermal Technique

Fadli

Amri

Sari

et al. 2020

MSF

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“…All of the solutions were prepared using deionized water. For the preparation of Fe 2 O 3 and CeO 2 NPs, a hydrothermal approach was carried out [65,66]. Initially, 2 g of Fe(NO 3 ) 3 •9H 2 O and Ce(NO 3 ) 3 .•6H 2 O were separately dissolved in 50 mL of deionized water to create a homogeneous solution.…”

Section: Methodsmentioning

confidence: 99%

Heterojunction-Based Photocatalytic Degradation of Rose Bengal Dye via Gold-Decorated α-Fe2O3-CeO2 Nanocomposites under Visible-Light Irradiation

Alshammari,

Kosa,

Patel

et al. 2024

Water

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Developing photocatalytic nanomaterials with unique physical and chemical features using low-cost and eco-friendly synthetic methods is highly desirable in wastewater treatment. In this work, the magnetically separable α-Fe2O3-CeO2 nanocomposite (NC), with its respective metal oxides of α-Fe2O3 and CeO2 nanoparticles, was synthesized using a combination of hexadecyltrimethylammonium bromide (CATB) and ascorbic acid via the hydrothermal method. To tune the band gap, the heterojunction nanocomposite of α-Fe2O3-CeO2 was decorated with plasmonic Au nanoparticles (Au NPs). The various characterization methods, such as FTIR, UV-vis DRS, XRD, XPS, TEM, EDX, SEM, and PL, were used to determine the properties of the materials, including their morphology, elemental composition, optical properties, band gap energy, and crystalline phase. The nanocomposite of α-Fe2O3-CeO2@Au was utilized to remove Rose Bengal (RB) dye from wastewater using a photocatalytic technique when exposed to visible light. A comprehensive investigation of the impact of the catalyst concentration and initial dye concentration was conducted to establish the optimal photodegradation conditions. The maximum photocatalytic efficiency of α-Fe2O3-CeO2@Au (50 mg L−1) for RB (20 ppm) dye removal was found to be 88.9% in 120 min under visible-light irradiation at a neutral pH of 7 and 30 °C. Various scavengers, such as benzoquinone (BQ; 0.5 mM), tert-butyl alcohol (TBA; 0.5 mM), and ethylenediaminetetraacetic acid (EDTA; 0.5 mM), were used to investigate the effects of different free radicals on the photocatalytic process. Furthermore, the reusability of the α-Fe2O3-CeO2@Au photocatalyst has also been explored. Furthermore, the investigation of the potential mechanism demonstrated that the heterojunction formed between α-Fe2O3 and CeO2, in combination with the presence of deposited Au NPs, led to an enhanced photocatalytic efficiency by effectively separating the photogenerated electron (e−)–hole (h+) pairs.

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“…It is also effective in making substances that are insoluble or difficult to dissolve in the environment. The reaction comprises recrystallization, then separation and heat-treatment to obtain NPs [53]. This method can also determine the effect of hydrothermal temperature on the crystal degree, average particle size, and type properties [54].…”

Section: Hydrothermal Methodsmentioning

confidence: 99%

Synthesis Methods of Fe₃O₄ Nanoparticles for Biomedical Applications

et al. 2023

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Magnetic nanoparticles made from organic and inorganic materials have gained significant technological progress and are widely applied in biomedicine, including magnetic resonance imaging, targeted drug delivery systems, biosensors, hyperthermia, and tissue engineering. The most reported synthesis methods include hydrothermal, sol‐gel, laser ablation, microemulsion, and ball‐milling methods. The synthesis parameters have a strong correlation with essential properties, such as phase, size, and surface morphology, which greatly influence the macroscopic properties and potential applications of the particles. Different preparation methods result in magnetic nanoparticles with varying characteristics, and the appropriate method can be chosen based on the requirements of the specific application. Two effective methods for synthesizing magnetic nanoparticles are coprecipitation and hydrothermal method because the preparation is relatively simple with low energy consumption, and uniform and homogeneous crystals are obtained.

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THE 3 HOURS-HYDROTHERMAL SYNTHESIS OF HIGH SURFACE AREA SUPERPARAMAGNETIC Fe3O4 CORE-SHELL NANOPARTICLES

Cited by 6 publications

References 18 publications

Superparamagnetic Nanoparticles with Mesoporous Structure Prepared through Hydrothermal Technique

Superparamagnetic Nanoparticles with Mesoporous Structure Prepared through Hydrothermal Technique

Heterojunction-Based Photocatalytic Degradation of Rose Bengal Dye via Gold-Decorated α-Fe2O3-CeO2 Nanocomposites under Visible-Light Irradiation

Synthesis Methods of Fe₃O₄ Nanoparticles for Biomedical Applications

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THE 3 HOURS-HYDROTHERMAL SYNTHESIS OF HIGH SURFACE AREA SUPERPARAMAGNETIC Fe3O4 CORE-SHELL NANOPARTICLES

Cited by 6 publications

References 18 publications

Superparamagnetic Nanoparticles with Mesoporous Structure Prepared through Hydrothermal Technique

Superparamagnetic Nanoparticles with Mesoporous Structure Prepared through Hydrothermal Technique

Heterojunction-Based Photocatalytic Degradation of Rose Bengal Dye via Gold-Decorated α-Fe2O3-CeO2 Nanocomposites under Visible-Light Irradiation

Synthesis Methods of Fe3O4 Nanoparticles for Biomedical Applications

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Synthesis Methods of Fe₃O₄ Nanoparticles for Biomedical Applications