ساخت و بهینه‌سازی نانو ذرات مغناطیسی پوشش داده شده با پلی‌اتیلن گلیکول به عنوان بستری برای استخراج‌کننده‌ی EHPA2D

نوع مقاله: یادداشت علمی و فنی

نویسندگان

1 پژوهشکده چرخه سوخت هسته‌ای، پژوهشگاه علوم و فنون هسته‌ای، سازمان انرژی اتمی ایران، صندوق پستی: 8486-11365، تهران ـ ایران

2 دانشکده مهندسی مواد و متالورژی، دانشگاه علم و صنعت ایران، صندوق پستی: 16846، تهران ـ ایران

3 باشگاه پژوهشگران جوان، دانشگاه آزاد اسلامی، واحد ساوه، صندوق پستی: 366-39187، ساوه ـ ایران

چکیده

نمونه­ای از نانو ذرات مغناطیسی منیتیت پوشش داده شده با پلی­اتیلن گلیکول ساخته شد. برای ساخت این نانو ذرات، فرایند هم­رسوبی شیمیایی در محیط اسیدی نمک­های فرو و فریک کلرید و پلی­اتیلن­گلیکول مورد استفاده قرار گرفت و از سدیم هیدروکسید به عنوان عامل رسوب­دهنده استفاده شد. شرایط رسوب­گیری نانو ذرات مغناطیسی منیتیت بهینه شد و ویژگی­های نانو ذرات مورد ارزیابی قرار گرفت. تصاویر تهیه شده به وسیله­ی میکروسکوپ الکترونی عبوری (TEM) نشان داد که ذرات به دست آمده بسیار ریز و شبه کروی بودند. اندازه­ی متوسط ذرات بین 8 تا 25 نانومتر بود. پراش پرتو ایکس (XRD) نشان داد که پوشش پلی­مری هیچ تغییر فازی در ذرات ایجاد نمی­کند. درصد پلی­مر موجود بر روی ذرات از طریق تجزیه­ی گرما وزنی (TGA) و میزان تثبیت استخراج­کننده­ی EHPA2D بر روی ذرات از طریق طیف­سنجی تبدیل فوریه­ی زیر قرمز (FT-IR) مورد ارزیابی قرار گرفت. نتایج به دست آمده نشان داد که تغییرات غلظت اسید، غلظت سود و مقدار پلی­اتیلن­گلیکول بر روی اندازه و ساختار ذرات تأثیر می­گذارند. در نهایت سطح این نانو ذرات به وسیله­ی استخراج­کننده­ی EHPA2D پوشش داده شد.

کلیدواژه‌ها


عنوان مقاله [English]

Synthesis and Optimization of Polyethylene Glycol Coated Magnetic Nanoparticles Used as D2EHPA Carriers

نویسندگان [English]

  • K Saberyan 1
  • M Maghsudi 2
  • R Ghasemzadeh 2
  • M Rahiminezhad Soltani 3
چکیده [English]

Fe3O4 magnetic nanoparticles were prepared by co-precipitation of FeCl3.6H2O and FeCl2.4H2O with addition of sodium hydroxide. The conditions for the preparation of Fe3O4 magnetic nanoparticles were optimized, and Fe3O4 magnetic nanoparticles obtained were characterized systematically by means oftransmission electron microscopy (TEM), thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The results revealed that the magnetic nanoparticles were semispherical with the average diameter of 8-25nm. XRD results did not show any phase variation due to PEG coating. It was found that the variation of acid and sodium hydroxide concentrations and quantity of the Polyethylene glycol (PEG) played a critical role in size and structure of nanoparticles. Finally, the surface of Fe3O4 magnetic nanoparticles was cooted with D2EHPA.

کلیدواژه‌ها [English]

  • Magnetic Magnetite Nanoparticles
  • Chemical Co-Precipitation
  • Polyethylene Glycol
  • D2EHPA

 

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