title: Study of neutron irradiation on CoS nanoparticles grown on AlMCM-41 matrix.
abstract: In this research, cobalt sulfide nanoparticles (NPs) were grown on AlMCM-41 matrix by using ion exchange method. The prepared sample was irradiated by thermalized neutron that emitted from Am-Be source. After that, X-ray diffraction (XRD), UV-vis spectroscopy, Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used for irradiated and non-irradiated samples characterization. The results show the increase of nanoparticles size and aggregation under neutron irradiation. The TEM images show average size of CoS NPs before and after neutron radiation about 20 and 50 nm, respectively. The XRD patterns show that nanoparticles size is increased after neutron radiation. The DRS results show that Co(2+) ions produced after neutron radiation, located in tetrahedral sites in AlMCM-41. The results indicate host materials have important role in decrease of radiation defects (RDs).
authors.affiliation: Department of Physics, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran.
authors.forename: D Rezaei
authors.initials: DR
authors.lastname: Ochbelagh
authors.forename: Sh
authors.initials: Sh
authors.lastname: Sohrabnezhad
authors.forename: M Kashefi
authors.initials: MK
authors.lastname: Biroon
authors.forename: N Morsali
authors.initials: NM
authors.lastname: Golboos
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D009502:Neutrons; D011827:Radiation; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D003035:Cobalt; C027875:cobaltous sulfide