استفاده از نانومواد TiO2 و TiO2@SBA-15 جهت تخریب فتوکاتالیستی مالاشیت سبز

نوع مقاله : مقاله کامل علمی - پژوهشی

نویسندگان

1 دانشگاه صنعتی خاتم الانبیاء(ص) بهبهان دانشکده ی منابع طبیعی گروه محیط زیست

2 دانشگاه صنعتی خاتم الانبیاء ص بهبهان

3 دانشگاه صنعتی خاتم الانبیاء ص بهبهان دانشکده ی منابع طبیعی گروه شیلات

4 دانشگاه صنعتی خاتم الانبیاء ص بهبهان دانشکده ی منابع طبیعی گروه محیط زیست

5 دانشگاه تربیت مدرس

چکیده

مالاشیت سبز به عنوان یک ترکیب قارچ‌کش، باکتری‌کش و انگل‌کش در صنعت آبزی‌پروری استفاده می‌شود که علاوه بر مضر بودن برای آبزیان، با وارد شدن به محیط زیست نیز به عنوان یک آلاینده محسوب می شود. در این تحقیق، از نانوفتوکاتالیست های TiO2و TiO2@SBA-15 برای تخریب کار آمد مالاشیت سبز استفاده شد. این جاذب ها نسبت به محیط زیست سازگار، و عملکرد بالایی در بین نانوجاذب‌ها دارند. نانوفتوکاتالیست های استفاده شده با تخریب مالاشیت سبز به عنوان یک آلاینده آلی تحت تابش نور فرابنفش مورد بررسی قرار گرفتند. اثر پارامترهای مختلف از جمله دوز جاذب(40، 100، 200، 400)، زمان تماس(240 دقیقه)، pH اولیه ی محلول(4، 7، 10) و غلظت اولیه ی محلول (10، 20، 30) تحت سیستم جذب ناپیوسته مورد بررسی قرار گرفتند. نتایج نشان داد شرایط بهینه شامل درصد حذفTiO2@SBA-15 (98 درصد) بر طبق غلظت اولیه 10 میلی گرم بر لیتر، دوز جاذب 200 میلی گرم بر لیتر و محلول pH=10 بود. نانو ذرات TiO2@SBA-15 با میزان حذف ۹۸ درصد در ۹۰ دقیقه عملکرد بهتری نسبت به نانو ذرات TiO2 با میزان حذف ۶۰ درصد در ۲۴۰دقیقه داشتند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Using of nanomaterial’s TiO2 and TiO2@SBA-15 for photo catalytic degradation of malachite green

نویسندگان [English]

  • amir zeidi 1
  • reza alizadeh 2
  • maryam rezaie shadegan 3
  • navid zamani 4
  • mitra cheraghi 5
1
2
3
4
5
چکیده [English]

Malachite green is used as a fungicide, bactericide and parasitic ide in the aquaculture industry, which is influenced on the environment as a pollutant .In this study, the using nano-photocatalysts TiO2@SBA-15 and TiO2 they were developed for efficient photodegradation of malachite green. This Absorbents is Eco-friendly And the have high performance in between of the nano-adsorbents. The used nano-photocatalysts was evaluated by the decomposition of malachite green as a model organic pollutant under UV light irradiation. Effects of various process parameters including adsorbent dosage (40, 100, 200, 400), contact time (240 min), initial pH (4, 7, 10) of the solution and initial Malachite green concentration (10, 20, 30) were investigated under batch adsorption system. The results showed that the optimal conditions of removal percentage of TiO2@SBA-15 (98%) accrued at initial concentration of 10 mg/l, adsorbent dosage of 200 mg/l and solution pH of 10. the TiO2@SBA-15 nanoparticles removal rate of 98% in 90 minutes performed better than the TiO2 nanoparticles removal rate of 60% in 240 minutes.

کلیدواژه‌ها [English]

  • removal
  • dye pollution's
  • ultra violet
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