مواد و فناوری‌های پیشرفته

مواد و فناوری‌های پیشرفته

سنتز نانوساختارهای تیتانات سرب به روش فعال‏سازی مکانیکی و تاثیر آن بر رنگبری متیل اورانژ

نویسندگان
صاحبعلی منافی
الناز خسروی پناه
دانشگاه آزاد اسلامی، گروه مهندسی مواد، شاهرود، ایران
10.30501/jamt.2637.70322
چکیده
در این تحقیق نانوپودر تیتانات سرب به‌روش فعال‌سازی مکانیکی سنتز شد. مواد اولیه شامل پودرهای اکسید تیتانیوم (آناتاز) و اکسید سرب (ІІ) با نسبت وزنی گلوله به پودر 10:1 و نسبت پودری ١:۱ به مدت 30 ساعت در آسیاب سیاره‌ای گلوله‌ای آسیا‌کاری شدند. سپس در دماهای 800، 900 و °C1000 عملیات حرارتی شدند. مشخصات نانوپودر حاصل توسط میکروسکوپ الکترونی روبشی گسیل الکترونی متاثر از میدان (FESEM)، پراش اشعه ایکس (XRD)، طیف‌سنجی تبدیل فوریه مادون قرمز (FTIR) بررسی شد از آنالیز طیف‌سنجی جذبی UV جهت محاسبه شکاف انرژی استفاده شد. فعالیت فوتوکاتالیستی نانوپودر توسط تخریب رنگ متیل اورانژ تحت تابش پرتو فرابنفش مورد بررسی قرار گرفت. سپس تاثیر پارامترهای مختلف از جمله غلظت اولیه رنگ، میزان فوتوکاتالیست و pH بر رنگبری بهینه شد. نتایج آزمایشات نشان می‏دهد که مقدار بهینه غلظت اولیه رنگ و میزان فوتوکاتالیست به ترتیبppm 10 و 042/0 گرم می‏باشد. همچنین بیشترین رنگبری در 4= pH مشاهده شد. نتایچ حاصل شده نشان داد که تخریب فوتوکاتالیستی رنگ متیل اورانژ در حضور نانوپودر تیتانات سرب صورت گرفت.
کلیدواژه‌ها
نانوپودر تیتانات سرب
فعال‌سازی مکانیکی
خواص فوتوکاتالیستی
متیل اورانژ

عنوان مقاله English

Synthesis of Lead Titanate Nanostructure by Mechanical Activation Method and Evaluating of its Photocatalytic Decolorization of Methyl orange

نویسندگان English

Sahebali Manafi
Elnaz Khosravipanah
Islamic Azad University, Department of Engineering, Shahrood Branch, Shahrood, Iran.
چکیده English

In this study, lead titanate nanopowder was synthesized using mechanical activation. Raw materials including titanium oxide powder (anatase) and Lead oxide (ІІ) with a ball to powder weight ratio of 1:10 and the powder ratio of 1:1 were milled in a planetary ball mill for 30 hours. Then, they were heated at 800, 900 and 1000 °C. The obtained nanopowder was investigated by field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The UV absorption spectroscopy was used to calculate the energy gap. Photocatalytic activity of nanopowder by dye degradation of methyl orange under UV light was evaluated. The effects of various influential parameters including initial dye concentration, photocatalyst dose and pH on the dye decolorization were also optimized. The optimum value for initial dye concentration and photocatalyst dose, were 10 ppm and 0.042 g respectively. Also, the best rate of decolorization observed at pH=4. Our results showed that, the photocatalytic degradation of methyl orange dye in the presence of lead titanate nanopowder was done.

کلیدواژه‌ها English

Lead titanate nanopowder
Mechanical activation
photocatalyst
Methyl Orange
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مواد و فناوری‌های پیشرفته
دوره 5، شماره 1
بهار 1395
صفحه 33-44

  • تاریخ دریافت 12 آبان 1394
  • تاریخ بازنگری 17 اسفند 1394
  • تاریخ پذیرش 24 اردیبهشت 1395