نویسندگان
1 دانشکده مهندسی مواد، دانشگاه آزاد اسلامی، واحد نجف آباد، اصفهان، ایران
2 دانشکده علوم پایه، دانشگاه آزاد اسلامی، واحد نجف آباد، اصفهان، ایران
چکیده
سنتز تک مرحلهای میکروکرههای TiO2/C به روش سولوترمال و استفاده از تیتانیومتتراکلرید و گلوکز به ترتیب به عنوان پیشماده های تیتانیوم دیاکسید و کربن در حلال اتانول گزارش میشود. مورفولوژی و اندازه میکروکرهها متاثر از پارامترهای زمان و مقدار نمک TiCl4 مطالعه و شرایط بهینه جهت سنتز آنها تعیین گردید. آنالیز فازی، بررسی ریزساختار و مورفولوژی نمونهها با استفاده از روشهای پراش پرتو ایکس (XRD) و میکروسکوپ الکترونی روبشی (SEM) مورد بررسی قرار گرفت. در طیف پراش پرتوی ایکس تنها پیکهای مربوط به فاز آناتاز TiO2 ظاهر شده که نشان دهنده این واقعیت است که کربن در ساختار این کامپوزیت آمورف میباشد. بر اساس نتایج بدست آمده از تصاویر میکروسکوپ الکترونی روبشی قطر میکروکرههای سنتز شده بین 3-1 میکرون تعیین گردید. اندازه دانههای کریستالی تیتانیومدیاکسید با استفاده از روش اصلاح شده شرر 28 نانومتر محاسبه شد. بررسی مورفولوژی میکروکره های TiO2/C، نشان داد که نانوذرات TiO2 به صورت همگن در زمینه کربنی پراکنده اند.
کلیدواژهها
عنوان مقاله [English]
The Effect of Time and TiCl4 Salt Concentration on the Nano TiO2/Carbon Composite Microspheres Morphology Synthesized by Solvothermal Method
نویسندگان [English]
- Alireza Khatibi 1
- Reza Ebrahimi Kahrizsangi 1
- Majid Ghashang 2
1 Department of material engineering, Najaf abad branch, Islamic Azad University, Najafabad, Isfahan, Iran
2 Department of Chemistry, Najafabad branch, Islamic Azad University, Najafabad, Isfahan, Iran
چکیده [English]
The one-step synthesis of TiO2/C microspheres via solvo-thermal method were reported using titanium tetrachloride and glucose as the precursors of titanium dioxide and carbon respectively in ethanol as solvent. The morphology and the size of microspheres affected from the time and TiCl4 salt concentration parameters were studied and the optimum conditions for the preparation of them were determined. The phase analysis, microstructure investigation and the morphology of the samples were investigated using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) methods. At the XRD spectra only the peaks related to the anatase phase of TiO2 are appeared which demonstrated to this fact that carbon at the structure of this composite is amorphous. According to the results of SEM images the diameter of the as synthesized micro-spheres was determined between 1-3 μm. The crystallite size of TiO2 particles was 28 nm measured via the modified Scherrer's formula. The morphology investigation of TiO2/C microspheres showed that, TiO2 nanoparticles are homogenously dispersed in the carbon matrix.
کلیدواژهها [English]
- Microsphere
- Solvothermal
- TiCl4
- Composite
- TiO2
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