سنتز سبز نانوذرات SnO2بر روی بنتونیت و بررسی فعالیت کاتالیزوری نوری آن در تخریب اریوکروم بلک T

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه مهندسی شیمی، دانشگاه صنعتی بیرجند، بیرجند، ایران

چکیده

در این تحقیق، از عصاره آویشن برای سنتز سبز نانوذرات اکسید قلع بر روی بستر بنتونیت (SnO2 NPs@bent) استفاده شد. عصاره آبی آویشن به عنوان یک عامل کاهنده موثر و پایدار کننده سبز در این روش سنتزی ایفای نقش کرد.  SnO2 NPs@bent توسط روش‌‌های مختلف همچون طیف‌سنجیفوریهزیرقرمز (FTIR)،پراش پرتو ایکس (XRD)، میکروسکوپ الکترونی روبشی (SEM) و طیف‌سنجی پراش انرژی پرتو ایکس (EDS) مورد شناسایی قرار گرفت. پس از اطمینان از سنتز موفقیت‌آمیز SnO2 NPs@bent، فعالیت کاتالیزوری نوری آن برای تخریب ماده رنگزای آلی اریوکروم بلک T در معرض نور مستقیم خورشید مورد بررسی قرار گرفت. این کاتالیزور جدید، فعالیت کاتالیزوری خوبی از خود به نمایش گذاشت، به طوری که پیک مشخصه اریوکروم بلک T در طیف UVبا گذشت زمان کاهش یافت تا اینکه پس از گذشت 5 ساعت به‌طور کامل ناپدید شد.در این تحقیق نه در مرحله سنتز کاتالیزور و نه در مرحله تخریب ماده رنگزای آلی از هیچ ماده شیمیایی و حلال سمی استفاده نشد و تمام شرایط سبز و ایمن بود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Green Synthesis of SnO2 Nanoparticles on Bentonite and Study of Its Photocatalytic Activity for Degradation of Eriochrome Black T

نویسندگان [English]

  • M. Honarmand
  • M. Golmohammadi
  • J. Hafezi Bakhtiari
Department of Chemical Engineering, Birjand University of Technology, Birjand, Iran
چکیده [English]

In this study, thyme extract was used for green synthesis of tin oxide nanoparticles on bentonite (SnO2 NPs@bent). The aqueous extract of thyme was applied as an effective reducing agent and a green stabilizer in this synthetic approach. SnO2 NPs@bent was characterized by various methods such as infrared Fourier spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray energy diffraction spectroscopy (EDS). After the assurance of the successful synthesis of tin oxide nanoparticles on bentonite, its photocatalytic activity was investigated for the degradation of the organic dye of eriochrome black T, under direct sunlight. The new catalyst exhibited a good catalytic activity, so that the related peak to the eriochrome black T in the UV spectrum decreased over time, until it disappeared completely after 5 hours. In this study, no chemicals or toxic solvents were used, neither in stage of the catalyst production nor in stage of the organic dye degradation, and all conditions were green and safe.

کلیدواژه‌ها [English]

  • SnO2 nanoparticles
  • Bentonite
  • Thyme
  • Organic dye

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دی 1399
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