کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10407049 892830 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermally induced structural changes and optical properties of tin dioxide nanoparticles synthesized by a conventional precipitation method
ترجمه فارسی عنوان
تغییرات ساختاری و خواص اپتیکی ناشی از حرارتی نانوذرات دی اکسید قلع سنتز شده توسط یک روش بارش معمولی ایجاد شده است
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی
Tin dioxide (SnO2) nanoparticles were synthesized by a conventional precipitation method using the reaction between tin chloride pentahydrate and ammonia solutions. The obtained powders were calcined at varied temperatures from 300 to 1050 °C, and then characterized by using thermogravimetric analysis, differential thermal analysis and Fourier transformation infrared spectroscopy. The average crystallite size, determined by x-ray diffraction, was found to be in the range of 3.45-23.5 nm. The analysis exhibited a tetragonal phase. The activation energy of crystal growth was calculated and found to be 12.12 kJ/mol. The microstructure of nanoparticles was examined by high resolution transmission electron microscopy. Optical properties were investigated by a UV-vis absorption spectrophotometer. The calculated optical band gap lies between 4.75-4.25 eV as a result of increasing the calcination temperatures and crystallite size.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science in Semiconductor Processing - Volume 16, Issue 6, December 2013, Pages 1784-1790
نویسندگان
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