Synthesis and Cha racterization of ma gnenic na nohollow spheres

سال انتشار: 1391
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 134

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شناسه ملی سند علمی:

ISPTC15_0903

تاریخ نمایه سازی: 11 دی 1400

چکیده مقاله:

Magnetic nanoparticles have been recei ved extensi vely research interest d ue to their wide applications [۱–۳]. Controll ed synthesis of nanostructured m aterials inc luding ma gnetic nanom aterials is t he basis for in-depth research of nanoscience and technology becaus e the shape, size and structure of the materials play the key roles deter mining their optical, cata lytic, magne tic, or mechanical properties. As one of important mem bers of magnetic com posite hollow spheres, magnetic/silica composite hollow spheres ha ve been extensively studied owing to the advantages of silica (nont oxic, biocom patible, stability against decomposition and hy drophilic c haracter). It is known th at SiO۲ can be modified via a sol–ge l reaction u sing a silane coupling ag ent to dispe rse it in a polymer matrix, as silan e coupling agents belong to a class of organosilane compou nds in whi ch at least two different types of r eactive grou p are bonded to the silic on atom in a molecule.In the present w ork, we report a facile method for the fabrica tion of monodispersed size- controllable silica nanohollow sphere (S NHS) by sol-gel metho d, then coated with ma gnetic ferrite by copre cipitation of FeCl۲ ov er the surface of SN HS. The crystal structure, morph ology and magnetic property of the MF-SNHS spheres were studied in detail.

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نویسندگان

a.a Rafati

Department of Physical Che mistry, Faculty of Chemistr y, Bu-Ali Sina University, Hamedan, Iran

s Shirazi

Department of Physical Che mistry, Faculty of Chemistr y, Bu-Ali Sina University, Hamedan, Iran