بررسی عوامل تاثیرگذار بر رشد و خواص نوری نانوذرات سولفیدمنگنز

نوع مقاله: مقاله پژوهشی کامل

نویسندگان

1 گروه فیزیک، پردیس علوم و تحقیقات خوزستان، دانشگاه آزاد اسلامی، اهواز، ایران گروه فیزیک، دانشگاه آزاد اسلامی، واحد اهواز، اهواز، ایران

2 گروه فیزیک، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

3 گروه فیزیک، واحد مسجد سلیمان، دانشگاه آزاد اسلامی، مسجد سلیمان، ایران

چکیده

از فرآیند ماکروویو–هیدروترمال برای رشد نانوذرات سولفیدمنگنز استفاده شد. تاثیر عواملی همچون غلظت، نوع حلال و توان و همچنین اثر دمای تابش دهی ماکروویو روی خواص نوری مورد بررسی قرار گرفت. نانوذرات سولفیدمنگنز توسط دستگاه های شناسایی مختلفی همانند پراش سنج پرتو ایکس، میکروسکوپ های الکترونی روبشی و عبوری، پراش انرژی پرتو ایکس و طیف سنج جذبی مورد مطالعه قرار گرفتند. الگوی حاصل از پراش انرژی پرتو ایکس و پراش پرتو ایکس به ترتیب بیانگر وجود عناصر مورد نظر و تشکیل فاز سولفیدمنگنز می باشند. تصاویر میکروسکوپ های الکترونی حاکی از رشد نانوذراتی کروی شکل و بهم چسبیده دارد. مطالعه طیف جذبی نشان داد که افزایش دما انرژی شکاف باند نوری نانوذرات را افزایش داده و شدت جذب نسبی کاهش می یابد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Synthesis of MnS nanoparticles and effect of growth parameters on the optical properties

نویسندگان [English]

  • Bahareh Ghanbari 1
  • Farid Jamali-sheini 2
  • Ramin Yousefi 3
1 Department of Physics, Science and Research Branch, Islamic Azad University, Ahvaz, Iran Department of Physics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
2 Department of Physics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
3 Department of Physics, Masjed-Soleiman Branch, Islamic Azad University (I.A.U), Masjed-Soleiman, Iran
چکیده [English]

In this research, hydrothermal-microwave process was used for synthesis of manganese sulfide (MnS) nanoparticles (NPs). The effects of growth parameters such as concentration, solution type, and power were investigated. After synthesis, different thermo-radiations of microwave were applied and optical properties were studied. Different characterization methods for study of NPs properties such as X-ray diffraction (XRD), transmission and scanning electron microscopy (TEM and SEM), energy dispersive X-ray, and UV-Visible spectroscopy were used. XRD patterns and EDS spectra represent formation of polycrystalline MnS phase and the existence of desired elements, respectively. Electron microscopy images showed the composition of NPs in the form of adherent spherical particles. With increasing in synthesis temperature, optical energy band gap increased and relative absorbance intensity decreased.

کلیدواژه‌ها [English]

  • Hydrothermal-microwave
  • MnS nanoparticles
  • optical properties

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