نوع مقاله : پژوهشی
نویسندگان
دانشگاه ملایر
چکیده
نانوساختارهای ZnxNi1-xO با استفاده از روش سل ژل با موفقیت با استفاده از نمک نیترات روی در بازه درصد ناخالصی 3 تا 10 درصد سنتز شدند. نتایج XRD نشان داد که تغییر درصد میزان ناخالصی نتوانست ساختار هگزاگونال نانوساختارهای ZnxNi1-xO)) تغییر دهد به این صورت که نانوساختارهای اکسیدروی آلاییده شده با نیکل همانند اکسید روی خالص ساختار هگزاگونال دارند که بیان می‌کند آلاییدگی نیکل در جایگاه رویِ ساختار کریستالی جای نشین شده است. همچنین در نمونه های آلاییده شده با %10 و %5/7 x= ، قله مربوط به شبکه کریستالی اکسید نیکل در صفحه [200] مشاهده شد. نتایج FT-IR دو پیک مربوط به دو مد کششی Ni-O و Zn-O در همه نانوساختارهای ZnxNi1-xO را تایید کرد. همچنین دو گروه عاملی هیدروکسیل و کربوکسیل نیز بر روی سطح نمونه ها مشاهده شد. نتایج FESEM نشان داد نانوساختارهای ZnxNi1-xO دارای شکل کروی و اندازه ذرات در ابعاد بین 30 الی 60 نانومتر هستند. بررسی نتایج طیف UV-Visible نشان داد که گاف نواری نانوساختارها به میزان آلاییده وابسته است، به طوری که با تغییر غلظت عنصر آلاینده نیکل مقدار گاف انرژی نانوساختارها تغییر کرد و بیشترین گاف انرژی مربوط به نمونه تهیه شده با درصد وزنی 3 درصد آلاینده می باشد.
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