| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1234472 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2012 | 5 Pages |
In this work, cobalt sulfide nanoparticles powder was synthesized in AlMCM-41 molecular sieve by using ion exchange method. The influence of gamma ray-radiation on the structural and optical properties of CoS/AlMCM-41 nanoparticles has been studied. Sample was irradiated by 60Co and 137Cs gamma ray source. The sample was characterized by X-ray diffraction (XRD), UV–Vis spectroscopy, scanning electron microscopy (SEM), FT-IR techniques and transmission electron microscopy (TEM). The XRD patterns show that nanoparticles size is increased after gamma radiation. The DRS results show that Co2+ ions produced after gamma radiation, located in tetrahedral sites in AlMCM-41. The results indicate host materials have important role in decrease of radiation defects (RDs). The gamma ray creates free radicals and forms new bonds in CoSAlMCM-41 sample.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► In the present investigation the AlMCM-41 was used as the host material, and CoS was selected as the guest molecule. ► The TEM images show average size of CoS NPs before and after neutron radiation about 20 and 70 nm, respectively. ► The results indicate host materials have important role in decrease of radiation defects (RDs).
