استفاده از نانوکامپوزیت CuO/Cu2O برای حذف رنگ متیل نارنجی از محلول آبی

نوع مقاله : مقاله پژوهشی

نویسنده

دانشکده علوم، دانشگاه گلستان، گرگان، ایران، صندوق پستی: 155

چکیده

نانوکامپوزیت CuO/Cu2O توسط روش تخریب گرمایی مخلوطی از مس(II) استات تک آبه و پلی­(وینیل­الکل) و به کمک روش‌های طیف‌سنجی تبدیل فوریه زیر قرمز (FT-IR)، پراش پرتو ایکس (XRD) و میکروسکوپ الکترونی عبوری (TEM) شناسایی شدند. پیک‌های ظاهر شده در طیف FT-IR، و هم‌چنین در الگوی XRD، سنتز نانوکامپوزیت CuO/Cu2O را تایید می­کنند. تصویر TEM نشان می‌دهد که نانوذرات کلوخه‌ای می‌باشند. نانوکامپوزیت CuO/Cu2O به­عنوان یک جاذب جدید برای حذف رنگ متیل نارنجی از محلول آبی مورد استفاده قرار گرفت. نتایج حذف رنگ نشان می‌دهند که غلظت اولیه رنگ تاثیری بر بازده حذف ندارد، و بازده حذف رنگ در محدوده 97 درصد ثابت باقی می­ماند. اما با افزایش pH از 2 تا 8 مقدار حذف رنگ زیاد می‌شود، که بیشترین بازده در pH برابر 8 به­دست آمد. پس از آن با افزایش pH و رسیدن به 12 حذف رنگ به حدود 11 درصد کاهش پیدا می‌کند. همچنین با افزایش مقدار جاذب از 5  به 20 میلی­گرم و افزایش مدت زمان تماس از 5 به 30 دقیقه کارایی جذب رنگ به حدود 99.5 درصد افزایش پیدا کرده است.

کلیدواژه‌ها


عنوان مقاله [English]

Use of CuO/Cu2O Nanocomposite to Removal of Methyl Orange Dye from Aqueous Solution

نویسنده [English]

  • Aliakbar Dehno Khalaji
Faculty of Science, Golestan University, P.O. Box: 155, Gorgan, Iran
چکیده [English]

Thermal decomposition of copper (II) acetate monohydrate and polyvinyl alcohol results in CuO/Cu2O nanocomposite synthesis. It was characterized by FT-IR, XRD, and TEM techniques. The peaks appeared in the FT-IR spectrum and the XRD pattern, confirming the CuO/Cu2O nanocomposite preparation. The TEM image shows that the particles are agglomerated. The CuO/Cu2O nanocomposite was used as a new adsorbent to remove methyl orange dye from the aqueous solution. The results of the dye removal study show that initial dye concentration has no effect on the removal percentage, and the dye removal percentage was constant at about 97%. However, dye removal increased with an increase in pH from 2 to 8, with the highest yield occurring at pH equal to 8. After increasing the pH and reaching 12, the removal percentage has been reduced. The dye removal efficiency increases to 99.5% by increasing the amount of adsorbent from 5 to 20 mg and by increasing the contact time from 5 to 30 minutes.

کلیدواژه‌ها [English]

  • Nanocomposite
  • CuO/Cu2O
  • Thermal decomposition
  • Adsorbent
  • Adsorption
  • Methyl orange
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