HRTEM and FTIR investigation of nanosized zinc ferrite irradiated with 100MeV oxygen ions

Singh, Jitendra Pal; Dixit, Gagan; Srivastava, R.C.; Negi, Puneet; Agrawal, H.M.; Kumar, Ravi

doi:10.1016/j.saa.2012.12.095

Cited by 21 publications

(10 citation statements)

References 45 publications

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“…45−47 Similar investigations were also observed from the Fourier transform infrared (FTIR) spectroscopic investigation of zinc ferrite nanoparticles synthesized using similar methods. 53 These impurities are always attached with nanoparticles and cannot be removed even if these nanoparticles are kept under intense beam of heavy ions. 53,54 High-temperature annealing to chemically synthesize nanoparticles also shows onsets of carboneous-like impurities.…”

Section: Resultsmentioning

confidence: 99%

Local Electronic Structure Perspectives of Nanoparticle Growth: The Case of MgO

Singh

Chae

2019

ACS Omega

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Herein, we reported nanoparticle growth from the point of view of the local electronic structure by taking MgO as a prototype material. These nanoparticles were obtained from the sol–gel autocombustion process. The precursor formed in this process was annealed for various temperatures ranging from 300 to 1200 °C for 0.5 and 1 h. It was observed that the amorphous phase occurred in the material synthesized at an annealing temperature of 300 °C for 1 h. This phase transformed to crystalline when the annealing temperature was increased to 350 °C. Crystallite size increased with annealing temperature; however, annealing time did not influence the crystallite size. To get deeper insights of modifications occurring at the atomic scale during crystallization growth, the local electronic structure of synthesized materials was investigated by measuring near-edge X-ray absorption fine structure at Mg, O, N, and C K-edges. These results envisaged that Mg 2+ ion coordination improved with the increase of annealing temperature. It was also observed that both annealing time and annealing temperature are sensitive to the local electronic structural changes.

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Section: Resultsmentioning

confidence: 99%

Local Electronic Structure Perspectives of Nanoparticle Growth: The Case of MgO

Singh

Chae

2019

ACS Omega

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“…The distorted morphology of the Fe 3 O 4 nanoparticles was due to the agglomeration effect. The HRTEM of ferrite has been reported in the literature, as well [44,45].…”

Section: Hrtem Studymentioning

confidence: 95%

Synthesis and characterisation of poly(epichlorohydrin-g-Fe3O4/congo red)-co-poly(methylmethacrylate)

Eunice¹,

Meenarathi²,

Palanikumar³

et al. 2015

Iran Polym J

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weight average molecular weight (M w ) of the copolymer and nanohybrid-grafted copolymer exhibited higher M w than that of the PECH homopolymer. In the present study, we simply prepared a novel material and characterized it by various analytical methods.Abstract A magnetic and fluorescent copolymer nanocomposite was prepared and characterized by various analytical techniques. Poly(epichlorohydrin) (PECH) was prepared by solution polymerization method using methacrylic acid as a chemical initiator and its copolymer was prepared by emulsion polymerization. After the structural modification of the copolymer with a nanohybrid system, its thermal properties were improved. The nanohybrid system consisting of Congo red dye decorated ferrite nanoparticles was synthesized by the conventional method and characterized by UV-Visible, fluorescence emission and excitation spectroscopy methods, high resolution transmission electron microscopy, and vibrating sample magnetometer techniques. Due to the decoration and encapsulation phenomena, the magnetic moment value of Fe 3 O 4 was found to be decreased. While increasing the loading of nanohybrid system, the glass transition temperature (T g ) of poly(methylmethacrylate) was increased. The TGA study inferred that by increasing the loading of nanohybrid system, the percentage weight residue remained above 550 °C was also increased. The chemical grafting of nanohybrid system onto the PECH-based copolymer backbone was confirmed by NMR spectroscopy and GPC analysis. The Electronic supplementary material The online version of this article (

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“…Though, chemical methods are cost effective and known to provide better control over particle size and size distribution but the particles obtained by these methods are expected to have carbecanous impurities. These kinds of impurities are reflected from near edge X-ray fine structure [ 154 ] and Fourier transform infrared spectroscopy [ 155 , 156 , 157 ]. Though specific methodology is adopted by researchers to remove these nanoparticles to enhance their performance [ 158 ] but still their effect cannot be neglected.…”

Section: Nanoparticlesmentioning

confidence: 99%

Approaches to synthesize MgO nanostructures for diverse applications

Singh

Sharma

et al. 2020

Heliyon

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Magnesium oxide remained interesting from long time for several important phenomena like; defect induced magnetism, spin electron reflectivity, broad laser emission etc. Moreover, nanostructures of this material exhibited suitability for different kinds of applications ranging from wastewater treatment to spintronics depending upon their shape and size. In this way, researchers had grown nanostructures in the form of nanoparticles, thin films, nanotubes, nanowalls, nanobelts. Though nanoparticles and thin films are well known form of nanostructures and wide variety of synthesis approaches are available, however, limited methodology for other nanostructures are available. In order to grow these nanostructures in an optimized way an understanding of these methods is essential. Thus, this review article depicts an overview of various approaches for design of different kinds of nanostructures.

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HRTEM and FTIR investigation of nanosized zinc ferrite irradiated with 100MeV oxygen ions

Cited by 21 publications

References 45 publications

Local Electronic Structure Perspectives of Nanoparticle Growth: The Case of MgO

Local Electronic Structure Perspectives of Nanoparticle Growth: The Case of MgO

Synthesis and characterisation of poly(epichlorohydrin-g-Fe3O4/congo red)-co-poly(methylmethacrylate)

Approaches to synthesize MgO nanostructures for diverse applications

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