اثر دمای کلسینه بر خواص ساختاری نانوذرات ZrO2 تهیه شده به روش سل ژل اصلاح شده در محیط ژلاتین

نویسندگان

1 دانشگاه فردوسی مشهد

2 آموزش عالی فنی و مهندسی اسفراین

چکیده

در این پژوهش، نانوذرات ZrO2 (زیرکونیا) به روش سل ژل اصلاح شده در دماهای 600، 800، 1000 و 1200 درجه­ی سانتی‌گراد سنتز شدند. اکسی نیترات زیرکونیوم به عنوان تامین کننده زیرکونیوم، ژلاتین به منظور عامل پلیمریزاسیون و پایدار کننده و نیز آب مقطر به عنوان حلال مورد استفاده قرار گرفتند. ساختار بلوری پودرها به روش پراش پرتو ایکس (XRD) مورد بررسی قرار گرفت و اندازه­ی میانگین بلورک‌ها با استفاده از فرمول شرر و روش ویلیامسون- ‌هال (W-H) براورد شد. تصاویر میکروسکوپ الکترونی تراگسیلی (TEM) از نانوذرات ZrO2 تکلیس شده در دماهای 600  و 1200 درجه­ی سانتی‌گراد، اندازه­ی میانگین ذرات را به ترتیب در حدود 10 و 32 نانومتر نشان داد. تحلیل بیناب تبدیل فوریه فروسرخ (FT-IR) در گستره­ی 400 تا 4000 بر سانتی‌متر، نتایج طیف پراش پرتو ایکس را تایید کرده و نشان می‌دهد که نمونه‌های تکلیس شده در دماهای 600 و C°1200 به ترتیب دارای ساختار چارگوشی و تک میلی هستند.    

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of calcination temperature on the structure properties of ZrO2 nanoparticles synthesized by modified sol gel ingelatin media

چکیده [English]

In this research, ZrO2 nanoparticles were synthesized by modified sol-gelmethod at different calcination temperatures (600, 800, 1000, 1200 °C).  Zirconium (IV) oxynitrate hydrate as zirconium source, gelatin as polymerization and stabilizer agent and distilled water was used as the solvent. The crystal structures of the synthesized samples were characterized by X-ray diffraction (XRD) and the average crystallite size was estimated by Scherrer fomula and Williamson-Hall method. Transmission electron microscopy (TEM) images showed that the average particle size of zirconia calcined at 600 and 1200°C are 10 and 32 nm, respectively. FTIR analysis in the range of 400-4000 cm-1 was  carried out, the results of FTIR showed that the samples are calcined at 600 and 1200 °C have tetragonal and monoclinc structure, respectively. FT-IR spectroscopy analyses of the synthesized samples confirmed the XRD results.  

کلیدواژه‌ها [English]

  • ZrO2 nanoparticle
  • gelatin
  • Sol-gel
  • Williamson-Hall
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