Preparation of Colloidal Suspension of Nano Size Magnetite
Publish place: New Materials National Congress
Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
View: 2,387
This Paper With 14 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
NEWMATERIALS01_003
تاریخ نمایه سازی: 31 فروردین 1387
Abstract:
The relatively pure Fe3O4 nanoparticles was synthesized by microwave hydrothermal (MWH) and sonocation-assisted co-precipitation. The precipitating agent was 0.5% hexamine in 10% ammonia solution. This was added to 100 ml of 0.01 M HCl containing stoichiometric amount of stable salt of Fe3+ and Fe2+ ions. The formaldehyde produced from hydrolysis of hexamine prevents partial oxidation of Fe2+ during the precipitation process. For stabilization of colloidal suspension a small amount of a bifunctional fatty acid was used to coat the Fe3O4 nanoparticles and make them hydrophobic. The extraction of Fe3O4 nanoparticles from aqueous phase into chloroform gave a stable magnetite suspension which was attracted by a magnet. The product was analyzed by XRD, LLS, EDX and quantities chemical analysis of iron content in magnetite. The average diameter of nanoparticles was found to be about 6.2 nm. The order of main factors according to their effectiveness on the yield of product was determined using a factorial design and ANOVA.
Keywords:
Authors
Reza Rezaei
Faculty of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :