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Reza Peymanfar   Mr.  Other 
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Reza Peymanfar published an article in December 2018.
Top co-authors
M. Reza Naimi-Jamal

83 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

4
Publications
18
Reads
2
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0
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Distribution of Articles published per year 

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2
 
Publications
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
DOI See at publisher website
Article 1 Read 0 Citations 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 10 Reads 0 Citations <strong>Preparation and characterization of MWCNT/Zn<sub>0.25</sub>Co<sub>0.75</sub>Fe<sub>2</sub>O<sub>4</sub> nanocomp... Reza Peymanfar, Shahrzad Javanshir, Mohammad Reza Naimi-Jama... Published: 03 November 2017
The 21st International Electronic Conference on Synthetic Organic Chemistry, doi: 10.3390/ecsoc-21-04799
DOI See at publisher website ABS Show/hide abstract

Microwave absorption has attracted a considerable attention in the last decade. Various factors have effect on the microwave attenuation such as permittivity and permeability of absorbers. In this research, these properties were provided by multiwall carbon nanotube (MWCNT) as a conductive polymer and Zn0.25Co0.75Fe2O4 as a magnetic nanoparticle. MWCNTs were functionalized with carboxylic acid groups through the sonochemical method by the mixture of nitric and sulfuric acid, due to their better dispersion in the medium reaction and enhancing interfacial polarization, and then magnetic nanoparticles were formed base on the functionalized MWCNTs through the solvothermal method by use of ethylene glycol as a solvent. Finally, MWCNT/Zn0.25Co0.75Fe2O4 nanocomposite was blended in the silicone rubber as a polymeric matrix to investigation of microwave absorption properties. Zn0.25Co0.75Fe2O4 nanoparticles and MWCNT/Zn0.25Co0.75Fe2O4 nanocomposite were identified by the diffuse reflection spectroscopy (DRS), Fourier transform infrared (FT-IR), field emission scanning electron microscopy (FE-SEM), and investigation of microwave absorption properties was performed by vector network analyzer (VNA). Results indicated that magnetic nanoparticles and magnetic and dielectric MWCNT/Zn0.25Co0.75Fe2O4 nanocomposite have been prepared and absorbed more than 47% of microwave at x-band. Moreover, maximum reflection loss of this nanocomposite was 15 dB at 11.96 GHz.

CONFERENCE-ARTICLE 7 Reads 0 Citations <strong>Preparation and characterization of templated barium hexaferrite (BaFe<sub>12</sub>O<sub>19</sub>) nanoparticles... Maryam Ahmadi, Reza Peymanfar, Neda Abdolrahimi, Shahrzad Ja... Published: 03 November 2017
The 21st International Electronic Conference on Synthetic Organic Chemistry, doi: 10.3390/ecsoc-21-04814
DOI See at publisher website ABS Show/hide abstract

Recently, barium ferrite nanoparticles have attracted substantial attention because of widespread applications in catalytic degradations, credit cards, storage hardwares, sensors, microwave devices, permanent magnets, high frequencies, photocatalytic catalysts, and etc. In this research, templated BaFe12O19 nanoparticles were prepared through the sol-gel method by use of cotton as a template in the sol step. Finally, templated nanoparticles were blended in the silicone rubber matrix and then prepared nanocomposite molded to investigate of microwave absorption properties at x-band frequency. Templated barium hexaferrite nanoparticles were characterized by Fourier transform infrared (FT-IR), diffuse reflection spectroscopy (DRS), vibrating sample magnetometer (VSM), field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and microwave absorption characteristics were obtained by vector network analyzer (VNA). Microwave absorption curves showed that Templated BaFe12O19/silicone rubber nanocomposite absorbed 65.80% of microwaves at 9.87 GHz.

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