بررسی تأثیر هایپرترمیای مغناطیسی نانوذرات فریت کبالت

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسنده

استادیار، دپارتمان علوم پایه، دانشکده فنی و حرفه ای شهید رجا یی کاشان، دانشگاه فنی و حرفه ای استان اصفهان ، ایران.

چکیده

تأثیر هایپرترمیای مغناطیسی حاصل از حل شدن نانوذرات فریت کبالت در آب‌مقطر بررسی شد. ساخت نانوذرات فریت کبالت (CoFe2O4) با روش هم‌رسوبی در دمای 80 درجه سلسیوس، با پیش‌ماده ‌شامل نمک‌های آهن و کبالت و در حضور اتمسفر هوا انجام شد. در این ساخت، از ستیل‌تری‌متیل‌آمونیوم‌برومید ((CTAB به‌عنوان سورفکتانت استفاده شد. ساختار نانوذرات از لحاظ اندازه، ریخت‌شناسی و نیز ساختار و ویژگی‌های مغناطیسی‌شان، به‌ترتیب توسط مشخصه‌یاب‌های پراش اشعه ایکس (XRD) میکروسکوپ الکترونی روبشی انتشار میدانی (FESEM) و دستگاه مغناطیس‌سنج نمونه ارتعاشی (VSM) مطالعه شدند. اندازه‌گیری هایپرترمیای مغناطیسی نمونه‌، پس از تهیه فروفلوئید با غلظت 3mg/ml در محیط آب‌مقطر و در میدان مغناطیسی ac با فرکانس 400 کیلوهرتز و شدت میدان 400 اورستد انجام شد. افزایش دمای نمونه‌ در بازه‌های زمانی موردنظر مشخص و توان اتلاف ویژه حرارتی (SLP) آن اندازه‌گیری شد. طبق نتایج حاصل از اندازه‌گیری، SLP نمونه برابر W/g 151 به‌دست آمد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Magnetic Hyperthermia Investigation Of Cobalt Ferrite Nanoparticles

نویسنده [English]

  • Ahmad Reza Yasemian
Assistant Professor, Department of Basic Sciences, Faculty of Shahid Rajaee, Kashan Branch, Technical and Vocational University (TVU), Isfahan, Iran.
چکیده [English]

The effect of magnetic hyperthermia on dissolution of cobalt ferrite nanoparticles in distilled water was investigated. Synthesis of cobalt ferrite nanoparticles (CoFe2O4) was performed by Co-precipitation method at 80 ° C, with precursor including iron and cobalt salts in the presence of air atmosphere. CTAB was used as a surfactant in this synthesis. The particle structure and morphology as well as the structure and magnetic properties of these nanoparticles were studied by X-ray diffraction (XRD) field emission scanning electron microscopy (FESEM) and vibrational sample magnetometer (VSM), respectively. Sample magnetic hyperthermia was measured after preparation of ferrofluid with a concentration of 3 mg/ml in distilled water and in an ac magnetic field with a frequency of 400 kHz and a field intensity of 400 Oe. The increase in sample temperature over time was determined and its specific heat dissipation power (SLP) was measured. According to the measurement results, the sample SLP was 151 W/g.

کلیدواژه‌ها [English]

  • Cobalt ferrite
  • Co-precipitation
  • Magnetic properties
  • Specific Loss Power
  1.  

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