Synthesis of Iron Oxide Nanoparticles by Sol–Gel Technique and Their Characterization

Kayani, Zohra Nazir; Arshad, Sana; Riaz, Saira; Naseem, Shahzad

doi:10.1109/tmag.2014.2313763

Cited by 66 publications

(46 citation statements)

References 10 publications

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“…Of these three methods, the chemical method is most preferred due to their easiness, less time taking and requirement of less expensive instrument. By means of chemical routes, IONPs have been successfully synthesized by co-precipitation method [19], solvothermal method [27] microemulsion method [28], sol-gel method [29], chemical vapor deposition method [30] and sonochemical method [23,31]. However, when it comes to the requirement of an amorphous nanoparticles with a better control of the morphology then sonochemical is the preferred method [32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Amorphous Iron Oxide Nanoparticles by the Sonochemical Method and Their Application for the Remediation of Heavy Metals from Wastewater

et al. 2020

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Nanoparticles have gained huge attention in the last decade due to their applications in electronics, medicine, and environmental clean-up. Iron oxide nanoparticles (IONPs) are widely used for the wastewater treatment due to their recyclable nature and easy manipulation by an external magnetic field. Here, in the present research work, iron oxide nanoparticles were synthesized by the sonochemical method by using precursors of ferrous sulfate and ferric chloride at 70 °C for one hour in an ultrasonicator. The synthesized iron oxide nanoparticles were characterized by diffraction light scattering (DLS), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), electron diffraction spectroscopy (EDS), high-resolution transmission electron microscopy (HRTEM) and vibrating sample magnetometer (VSM). The FTIR analysis exhibits characteristic absorption bands of IONPs at 400–800 cm−1, while the Raman spectra showed three characteristic bands at 273, 675, and 1379 cm−1 for the synthesized IONPs. The XRD data revealed three major intensity peaks at two theta, 33°, 35°, and 64° which indicated the presence of maghemite and magnetite phase. The size of the spherical shaped IONPs was varying from 9–70 nm with an average size of 38.9 nm while the size of cuboidal shaped particle size was in microns. The purity of the synthesized IONPs was confirmed by the EDS attached to the FESEM, which clearly show sharp peaks for Fe and O, while the magnetic behavior of the IONPs was confirmed by the VSM measurement and the magnetization was 2.43 emu/g. The batch adsorption study of lead (Pb) and chromium (Cr) from 20% fly ash aqueous solutions was carried out by using 0.6 mg/100 mL IONPs, which exhibited maximum removal efficiency i.e., 97.96% and 82.8% for Pb2+ and Cr ions, respectively. The fly ash are being used in making cements, tiles, bricks, bio fertilizers etc., where the presence of fly ash is undesired property which has to be either removed or will be brought up to the value of acceptable level in the fly ash. Therefore, the synthesized IONPs, can be applied in the elimination of heavy metals and other undesired elements from fly ash with a short period of time. Moreover, the IONPs that have been used as a nanoadsorbent can be recovered from the reaction mixture by applying an external magnetic field that can be recycled and reused. Therefore, this study can be effective in all the fly ash-based industries for elimination of the undesired elements, while recyclability and reusable nature of IONPs will make the whole adsorption or elimination process much economical.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Amorphous Iron Oxide Nanoparticles by the Sonochemical Method and Their Application for the Remediation of Heavy Metals from Wastewater

et al. 2020

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“…Nanoparticles of different materials have been synthesized by use of sol-gel techniques. [15][16][17][18] In this study we synthesized copper oxide nanoparticles by use of an inexpensive sol-gel process, and investigated the effect of different annealing temperatures on the structure, microstructure, and magnetic properties of the nanoparticles. Optical properties were indicative of a larger band gap than reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Copper Oxide Nanoparticles Fabricated by the Sol–Gel Method

Kayani

Umer

Riaz

et al. 2015

Journal of Elec Materi

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127

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Copper oxide nanoparticles were successfully prepared by a sol-gel technique. An aqueous solution of copper nitrate Cu(NO 3 ) 2 and acetic acid was used as precursor. On addition of sodium hydroxide (NaOH) a precipitate of copper oxide was immediately formed. The copper oxide nanoparticles were characterized by use of x-ray diffractometry (XRD), thermogravimetric analysis (TGA), differential thermal analysis, differential scanning calorimetry, Fourier-transform infrared spectroscopy (FTIR), vibrating sample magnetometry, and scanning electron microscopy (SEM). The XRD pattern contained sharp peaks of copper oxide nanoparticles with mixed cuprite and tenorite phases. Use of the Debye-Scherer equation showed that the crystallite size of the copper oxide nanoparticles increased with increasing annealing temperature. FTIR spectra revealed vibration of the CuO band at 473 cm À1 ; a band at 624 cm À1 was attributed to Cu 2 O. Maximum coercivity and saturation magnetization of the nanoparticles were 276 Oe and 0.034 emu/g, respectively. SEM micrographs of the nanoparticles revealed the presence of spherical nanoparticles of the tenorite phase whereas the cuprite phase was in the form of a compact deposit.

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“…Especially in catalysis magnetite (Fe3O4) nanoparticles modified by noble metals show promising properties. For this reason, the magnetic characterization of these new nanomaterials and the study of the influence of the chemical composition and the morphology on the magnetic properties are particularly important [5], [6]. In a recent paper, the authors presented the magnetic characterization of pure magnetite nanopowders synthesized by a new green microwave-assisted method [7].…”

Section: Introductionmentioning

confidence: 99%

Chemical and magnetic properties characterization of magnetic nanoparticles

Bertolucci

Galletti

Antonetti

et al. 2015

2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

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This paper deals with the characterization of magnetic iron oxide nanoparticles. Pure magnetite (Fe3O4) and noble metal doped magnetite were synthesized following a new sustainable microwave-assisted method. Furthermore, an experimental analysis was carried out to investigate the chemical and magnetic properties of these new nanopowders. Morphological and chemical characteristics of the pure magnetite and magnetite modified by noble metals such as palladium, platinum and ruthenium are provided together with the relevant B-H magnetic curve. Among the adopted measurement techniques, the purity of magnetite phase was analyzed via Fourier Transform Infrared Spectroscopy (FT-IR) and X-Ray Diffraction (XRD), while a Vibrating Sample Magnetometer (VSM) characterized the magnetic behavior of the nanopowder samples

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Synthesis of Iron Oxide Nanoparticles by Sol–Gel Technique and Their Characterization

Cited by 66 publications

References 10 publications

Synthesis and Characterization of Amorphous Iron Oxide Nanoparticles by the Sonochemical Method and Their Application for the Remediation of Heavy Metals from Wastewater

Synthesis and Characterization of Amorphous Iron Oxide Nanoparticles by the Sonochemical Method and Their Application for the Remediation of Heavy Metals from Wastewater

Characterization of Copper Oxide Nanoparticles Fabricated by the Sol–Gel Method

Chemical and magnetic properties characterization of magnetic nanoparticles

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