Pirochromite (MgCr2O4) nanoparticles were successfully prepared in this study. During synthesis of the pirochromite nanoparticles, a sol-gel was prepared by using magnesium acetate and potassium dichromate as magnesium and chromium sources and by using stearic acid as the network. | Synthesis characterization and optical band gap of Pirochromite MgCr2O4 Nanoparticles by Stearic Acid Sol-Gel Method Current Chemistry Letters 5 2016 173 180 Contents lists available at GrowingScience Current Chemistry Letters homepage Synthesis characterization and optical band gap of Pirochromite MgCr2O4 Nanoparticles by Stearic Acid Sol-Gel Method Ehsan Jafarnejada Salah Khanahmadzadeha Fatemeh Ghanbarya and Morteza Enhessarib a Department of Chemistry Mahabad Branch Islamic Azad University Mahabad . Box 443 Iran b Department of Chemistry Naragh Branch Islamic Azad University Naragh Iran CHRONICLE ABSTRACT Article history Pirochromite MgCr2O4 nanoparticles were successfully prepared in this study. During Received January 21 2016 synthesis of the pirochromite nanoparticles a sol-gel was prepared by using magnesium acetate Received in revised form and potassium dichromate as magnesium and chromium sources and by using stearic acid as July 10 2016 the network. Infrared spectroscopy FT-IR X-ray diffraction XRD transmission electron Accepted 11 July 2016 microscope TEM scanning electron microscope SEM and energy-dispersive X-ray Available online 11 July 2016 spectroscopy EDX were used for the elemental analysis and diffuse reflectance spectroscopy DRS and vibrating sample magnetometer VSM were used in order to identify provide a Keywords fuzzy diagnosis and determine the size and morphology of the particles as well as to analyze Nanoparticles Pirochromite the optical and magnetic properties of the particles. The particle size of MgCr2O4 nanoparticles AB2O4 was observed to fall within a range of 39 nm 71 nm. Sol-gel method Fd3m 2016 Growing Science Ltd. All rights reserved. 1. Introduction Nanoparticles have unique properties such as high resistance toughness and rigidity due to their high surface area to volume ratio. Magnesium oxide is a powder nanocompound its spinel structure consists of a very large family of compounds with a wide .
