Sadegh Rostamnia - Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, P.O.B ۵۵۱۸۱-۸۳۱۱۱, Maragheh, Iran
Mahin Abdollahi - Maragheh Chemistry Association, University of Maragheh, P.O. Box ۵۵۱۸۱-۸۳۱۱۱, Maragheh, Iran
Moslem Sadeghi - Maragheh Chemistry Association, University of Maragheh, P.O. Box ۵۵۱۸۱-۸۳۱۱۱, Maragheh, Iran
Ahmad Sohrabi Noor - Maragheh Chemistry Association, University of Maragheh, P.O. Box ۵۵۱۸۱-۸۳۱۱۱, Maragheh, Iran

Due to the task-specific properties of amino groups, core-shell nanostructures of PrNH2/Fe3O4@SiO2 have been extensively investigated as advanced adsorbents; however, most studies on surface modification of Fe3O4@SiO2 substances were of environmentally inefficient grafting methods [1-3]. Herein, we demonstrated that monodispersed and spherical magnetic nanoparticle of Fe3O4 to Fe3O4@SiO2 nanomaterials and then preparation of the PrNH2/Fe3O4@SiO2 can be facilely prepared by co-condensation of TEOS with APTMS employing a green sol–gel process.On the other hand, with the increasingly discharged heavy metal containing wastewater into the environment, removal of heavy metal ions from wastewater has been an extensive research topic. These pollutants are not biodegradable and tend to accumulate in living organisms and many heavy metal ions are known to be toxic or carcinogenic [3-5].