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Reza Peymanfar   Mr.  Other 
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Reza Peymanfar published an article in March 2019.
Top co-authors
Mohammad Reza Naimi-Jamal

116 shared publications

Research Laboratory of Green Organic Synthesis and Polymers, Chemistry Department, Iran University of Science and Technology (IUST), Tehran, Iran

Maryam Ahmadi

1 shared publications

11
Publications
77
Reads
8
Downloads
6
Citations
Publication Record
Distribution of Articles published per year 
(2017 - 2019)
Total number of journals
published in
 
7
 
Publications See all
Article 0 Reads 0 Citations Preparation and identification of modified La0.8Sr0.2FeO3 nanoparticles and study of its microwave properties using sili... Reza Peymanfar, Shahrzad Javanshir, Mohammad Reza Naimi-Jama... Published: 21 March 2019
Materials Research Express, doi: 10.1088/2053-1591/ab1218
DOI See at publisher website
Article 2 Reads 0 Citations Preparation and identification of bare and capped CuFe2O4 nanoparticles using organic template and investigation of the ... Reza Peymanfar, Farzaneh Azadi Published: 01 February 2019
Nano-Structures & Nano-Objects, doi: 10.1016/j.nanoso.2019.01.001
DOI See at publisher website
Article 0 Reads 0 Citations A novel approach to prepare one-pot Fe/PPy nanocomposite and evaluation of its microwave, magnetic, and optical performa... Reza Peymanfar, Fereshteh Norouzi, Shahrzad Javanshir Published: 19 December 2018
Materials Research Express, doi: 10.1088/2053-1591/aaf709
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The aim of this study was preparation of Fe/Fe2O3/Fe3O4 (Fe)/polypyrrole (PPy) nanocomposite using reductive method and investigation of its microwave absorbing properties using polymethylmethacrylate (PMMA) medium. Firstly, PPy was prepared by an oxidative polymerization method with Fe3+ as a doping agent. Next, the Fe/PPy nanocomposite was formed by insitu reduction of Fe2+ and remained Fe3+ with adding sodium borohydride in the solution under an inert nitrogen atmosphere. Finally, PPy and Fe/PPy nanostructures were separately suspended within the PMMA matrix to examine their microwave absorbing characteristics. The prepared PPy and Fe/PPy nanostructures were studied using the Fourier transform infrared (FT-IR), X-ray powder diffraction (XRD), and field emission scanning electron microscopy (FE-SEM). The diffuse reflection spectroscopy (DRS) analysis presented a 1.79 eV band gap for the Fe/PPy nanocomposite based on the Kubelka–Munk theory. The vibrating sample magnetometer (VSM) revealed that magnetic properties were reinforced in the Fe/PPy nanocomposite. According to the results obtained by vector network analyzer (VNA), the maximum reflection loss of Fe/PPy/PMMA nanocomposite was -76.02 dB at 8.96 GHz with a thickness of 3.2 mm, absorbing all of the x-band frequency more than 12.72 dB with a thickness of 2.8 mm. Interestingly, the Fe/PPy/PMMA nanocomposite demonstrated a bandwidth > 3.4 GHz more than 10 dB from 2.2 to 3.2 mm at the x-band frequency.
Article 0 Reads 0 Citations Preparation, Characterization and Antibacterial Activity Investigation of Hydrocolloids Based Irish Moss/ZnO/CuO Bio-bas... Atefeh Alipour, Shahrzad Javanshir, Reza Peymanfar Published: 18 September 2018
Journal of Cluster Science, doi: 10.1007/s10876-018-1449-4
DOI See at publisher website
Article 1 Read 1 Citation Preparation of neat and capped BaFe2O4 nanoparticles and investigation of morphology, magnetic, and polarization effects... Reza Peymanfar, Mitra Rahmanisaghieh Published: 29 August 2018
Materials Research Express, doi: 10.1088/2053-1591/aadaac
DOI See at publisher website
CONFERENCE-ARTICLE 42 Reads 0 Citations <strong>Preparation and Identification of BaFe<sub>2</sub>O<sub>4</sub> Nanoparticles by the Sol-Gel Rut and Investigati... Reza Peymanfar, Mitra Rahmanisaghie, Arezoo Ghaffari, Yousef... Published: 18 May 2018
Proceedings, doi: 10.3390/ecms2018-05234
DOI See at publisher website ABS Show/hide abstract

In the last decade, spinel structures have been widely explored due to widespread applications in the antibacterial nanocomposites, memory devices, catalysts, photocatalysts, high frequency devices, and electromagnetic absorbing materials. In this study, BaFe2O4 spinel structure were synthesized through the sol-gel method using low sintering temperature and then were identified by vibrating sample magnetometer (VSM), X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR), field emission scanning electron microscopy (FE-SEM), and vector network analyzer (VNA) analysis. Results showed that uniform and pure crystal structure of BaFe2O4 nanoparticles have been prepared base on the sol-gel method. Finally, BaFe2O4 nanoparticles were blended by silicone rubber to characterize microwave absorption properties of the nanocomposite at ku-band frequency. According to the VNA results, BaFe2O4/silicone rubber nanocomposite with 1.75 mm thickness absorbed more than 94.38% of microwave at ku-band frequency and the maximum reflection loss of the BaFe2O4/silicone rubber nanocomposite was -51.67 dB at 16.1 GHz.

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