Synthesis of structure-controlled hematite nanoparticles by a surfactant-assisted hydrothermal method and property analysis

Kongsat, Pantharee; Kudkaew, Kobkun; Tangjai, Jiratikul; O’Rear, Edgar A.; Pongprayoon, Thirawudh

doi:10.1016/j.jpcs.2020.109685

Cited by 24 publications

(15 citation statements)

References 70 publications

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“…Commercial α-Fe 2 O 3 came from a vendor for cement factory and its properties were analyzed by XRD and SEM. The synthesized α-Fe 2 O 3 nanoparticles were prepared by surfactant-assisted method as described previously [ 23 ]. Iron (II) sulfate heptahydrate (FeSO 4 ·7H 2 O, 99%) from Quality Reagent Chemical (QREC, Auckland, New Zealand) served as the precursor for the nanoparticle synthesis.…”

Section: Methodsmentioning

confidence: 99%

“…Researchers have described several approaches to the synthesis of α-Fe 2 O 3 nanoparticles including coprecipitation [ 21 ], hydrothermal [ 22 ] and surfactant-assisted hydrothermal methods [ 23 ]. Of these techniques, synthesis of nanoparticles using a surfactant template offers some advantages.…”

Section: Introductionmentioning

confidence: 99%

“…Of these techniques, synthesis of nanoparticles using a surfactant template offers some advantages. Especially, the property of a surfactant to form micellar aggregates in solution at its critical micelle concentration (CMC) provides a means to control size and structure of the nanoparticles [ 23 , 24 ]. The structure, size and other properties of α-Fe 2 O 3 nanoparticles are affected by the shape and size of the micelles, which are determined by the chemical structure of the surfactant molecule.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Morphologically Controlled Hematite Nanoparticles on the Properties of Fly Ash Blended Cement

et al. 2021

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Several types of hematite nanoparticles (α-Fe2O3) have been investigated for their effects on the structure and properties of fly ash (FA) blended cement. All synthesized nanoparticles were found to be of spherical shape, but of different particle sizes ranging from 10 to 195 nm depending on the surfactant used in their preparation. The cement hydration with time showed 1.0% α-Fe2O3 nanoparticles are effective accelerators for FA blended cement. Moreover, adding α-Fe2O3 nanoparticles in FA blended cement enhanced the compressive strength and workability of cement. Nanoparticle size and size distribution were important for optimal filling of various size of pores within the cement structure.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Morphologically Controlled Hematite Nanoparticles on the Properties of Fly Ash Blended Cement

et al. 2021

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“…Zirconium-lanthanum @ Fe 3 O 4 composite was prepared using the hydrothermal process and showed high photocatalytic activity for water treatment (Altaf et al 2021). Pantharee Kongsat et al (Kongsat et al 2021) prepared α-Fe 2 O 3 nanoparticles utilizing a surfactant-assisted hydrothermal technique. They investigated the use of three surfactant types with different concentrations to adjust the shape, phase, and particle size of α-Fe 2 O 3 .…”

Section: Hydrothermalmentioning

confidence: 99%

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

et al. 2021

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The rapid urbanization and industrialization is causing worldwide water pollution, calling for advanced cleaning methods. For instance, pollutant adsorption on magnetic oxides is efficient and very practical due to the easy separation from solutions by an magnetic field. Here we review the synthesis and performance of magnetic oxides such as iron oxides, spinel ferrites, and perovskite oxides for water remediation. We present structural, optical, and magnetic properties. Magnetic oxides are also promising photocatalysts for the degradation of organic pollutants. Antimicrobial activities and adsorption of heavy metals and radionucleides are also discussed.

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“…Among various nanoparticle types, magnetic nanoparticles (MNPs) attracted increased attention due to their unique physicochemical and magnetic properties [3,4]. MNPs are potentially employed in many applications such as biomedicine [2,5], environmental remediation [1,4], catalysis [6,7], magnetic resonance imaging [8,9], data storage [10,11], sensors [12,13], electromagnetic shielding [14], and absorbing materials [15], etc.…”

Section: Introductionmentioning

confidence: 99%

Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy

et al. 2021

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Iron-nickel alloy is an example of bimetallic nanostructures magnetic alloy, which receives intensive and significant attention in recent years due to its desirable superior ferromagnetic and mechanical characteristics. In this work, a unique starfish-like shape of an iron-nickel alloy with unique magnetic properties was presented using a simple, effective, high purity, and low-cost chemical reduction. There is no report on the synthesis of such novel shape without complex precursors and/or surfactants that increase production costs and introduce impurities, so far. The synthesis of five magnetic iron-nickel alloys with varying iron to nickel molar ratios (10–50% Fe) was undertaken by simultaneously reducing Fe(II) and Ni(II) solution using hydrazine hydrate as a reducing agent in strong alkaline media for 15 min at 95–98 °C. The effect of reaction volume and total metal concentration on the properties of the synthesized alloys was studied. Alloy morphology, chemical composition, crystal structure, thermal stability, and magnetic properties of synthesized iron-nickel alloys were characterized by means of SEM, TEM, EDX, XRD, DSC and VSM. ImageJ software was used to calculate the size of the synthesized alloys. A deviation from Vegard’s law was recorded for iron molar ration higher than 30%., in which superstructure phase of FeNi3 was formed and the presence of defects in it, as well as the dimensional effects of nanocrystals. The saturation magnetization (Ms), coercivity (Hc), retentivity (Mr), and squareness are strongly affected by the molar ratio of iron and nickel and reaction volume as well as the total metal concentration.

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Synthesis of structure-controlled hematite nanoparticles by a surfactant-assisted hydrothermal method and property analysis

Cited by 24 publications

References 70 publications

Effect of Morphologically Controlled Hematite Nanoparticles on the Properties of Fly Ash Blended Cement

Effect of Morphologically Controlled Hematite Nanoparticles on the Properties of Fly Ash Blended Cement

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

Iron-Nickel Alloy with Starfish-like Shape and Its Unique Magnetic Properties: Effect of Reaction Volume and Metal Concentration on the Synthesized Alloy

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