بررسی اثر استفاده از کاتالیست های نیکل و کبالت

نویسندگان

دانشگاه الزهرا

چکیده

چکیده:نانو لوله های کربنی به روش نشست بخار شیمیایی بر پایه محلول[Ni/Co = (1/ با دو نسبت مختلف , ( 0.5 Co(NO3)2.6H2O و Ni(NO3)2.6H2O های نمکی1) سنتز شدند. با استفاده از حلقه پسماند مغناطیسی، خواص / 0.0)]مغناطیسی نمونه ها از جمله میدان وادارندگی ، مغناطش اشباع،مغناطش پسماند و همچنین پذیرفتاری مغناطیسی بدست آمد. دریافتیمکه محصول نانو لوله هایی که با استفاده از ترکیب کاتالیست هایبدست آمدند دارای میدان وادارندگی بیشتر Co(NO3)2.6H2O و Ni(NO3)2.6H2Oولی مغناطش پسماند و مغناطش اشباع کمتری نسبت به نانو لوله هاییسنتز شدند، دارند. Ni(NO3)2.6H2O که فقط با استفاده از کاتالیست

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of Co and Ni catalysts effect in carbon nanotubes synthesis and magnetic

نویسندگان [English]

  • Sedighe Dadras
  • Maryam Vasheghani Farahani
چکیده [English]

Carbon nanotubes (CNT) were synthesized by CVD method based on Ni(NO3)2.6H2O and Co(NO3)2.6H2O solution with two different ratios [Ni/Co = (1/ 0.5) , (1/ 0.0)]. We obtained the magnetic properties of the samples, such as coercivity field, saturate magnetization, retentivity magnetization and magnetic susceptibility by using of the magnetic hysteresis loops. It was found that carbon nano tubes were synthesized by using combination of Ni(NO3)2.6H2O and Co(NO3)2.6H2O catalysts, have much higher coercivity field, but less retentivity magnetization and saturation magnetization compared with the nanotubes were synthesized by using of the only Ni(NO3)2.6H2O catalyst

کلیدواژه‌ها [English]

  • Carbon nanotubes
  • Catalysts
  • Hysteresis Loop
  • Coercivity Field
  • Magnetic Susceptibility
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