14377

12995

كارشناسي ارشد

شيمي معدني

اصفهان : دانشگاه صنعتي اصفهان

1397

چهارده، ۶۱ص.: مصور، جدول، نمودار

1397/12/04

كتابنامه

شيمي

شيمي

1397/12/06

ID12995

62 Synthesis of Holmium Ho Erbium Er Dysprosium Dy and Ytterbium Yb Phosphorescent Pigments from Precursor M edta H2O n Immobilized on B2O3 Al2O3 Masoomeh Asadi masy asadi@yahoo com Date of Submission 2019 01 05 Department of Chemistry Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language PersianH Hadadzadeh Prof hadad@cc iut ac ir AbstractIn this research Na M edta H2O n M Dy Ho Yb and Er n 1 3 complexes were synthesizedusing lanthanide salts and Na4 edta Then the complexes were refluxed in the presence of amixture of Al OH 3 and H3BO3 for 24 h The reaction mixture was then calcined at 400 C for 5 hours The obtained powder as a new phosphorescent pigment was dispersed in water andacrylicpolyurethane resin to prepare a new phosphorescent paint The precursors and pigmentswere characterized by elemental Analysis XRD XRF FT IR UV Vis and fluorescence spectroscopy Inaddition the prepared phosphorescent paint was characterized by solid state phosphorimetryKeywords Luminescence phosphorescent pigment lanthanide complexes acrylic polyurethaneresin Alumina boron oxide

حسن حدادزاده

مرضيه دريانورد

كاظم كرمي، علي حسين كيانفر