ساخت نانوگل‌های Cu2S و بررسی خواص نوری و نورگرمایی آن در دو ناحیة مرئی و مادون قرمز

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه فیزیک، دانشکده علوم، دانشگاه شهید چمران اهواز، اهواز، ایران

چکیده

در این کار، نانوگل‌های Cu2S که یک نیم‌رسانای نوع p و غیرسمی است و دارای گاف نواری غیرمستقیم است، به روش حلالی-حرارتی سنتز و از طریق آنالیزهای XRD و FESEM شناسایی شدند. سپس، خواص نوری آنها از طریق آنالیز UV-Vis اندازه­گیری و برای بررسی پیوندهای ارتعاشی و شناسایی و مشخص کردن گروه‌های عاملی از آنالیز FT-IR استفاده شد. همچنین، خواص نورگرمایی این نانوگل‌ها در محدوده نور مرئی و فروسرخ مورد بررسی قرار گرفت. نتایج نشان داد این نانوگل‌ها در هر دو محدودة نور مرئی و فروسرخ خواص نورگرمایی خوبی از خود نشان می‌دهد. در ناحیة مرئی، با تابش نور مرئی تابیده شده از لامپ متال هالید با توان 400 وات با شدت  W/m21000 به مدت 60 دقیقه به محلول آب حاوی g/l 30 از Cu2S، °C 23 افزایش دما و در ناحیه مادون قرمز با تابش لیزر ۸۰۸ نانومتر یک افزایش 44 درجه‌ای در مدت زمان 15 دقیقه برای غلظت g/l 10 از Cu2S مشاهده ‌شد. همچنین، تبخیر سطحی آب، در حضور این نانوگل‌ها با تابش نور مرئی بررسی شد و نشان داد که با افزایش غلظت این نانوگل‌ها تا g/L 30، تبخیر سطحی تا ۴ برابر نسبت به آب خالص افزایش می‌یابد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Fabrication of Cu2S nanoflowers and investigation of its optical and photothermal properties in both visible and infrared regions

نویسندگان [English]

  • Mansoor Farbod
  • Alireza Mobaralmoab
  • Leyla Sharif
  • Fatima Matroodi
Department of physics, shahid chamran university of Ahvaz
چکیده [English]

Abstract: In this work, Cu2S nanoflowers, which is a non-toxic p-type semiconductor and has an indirect band gap of 1.21 eV, were synthesized by solvothermal method and characterized through XRD and FESEM analyses. Then, their optical properties were measured through UV-Vis, FT-IR and PL analyses. Also, the photothermal properties of these nanoflowers were investigated in the range of visible and near infrared light. The results showed that these nanoflowers have good photothermal properties in both visible and infrared light ranges. In the visible region, by irradiating a water solution containing 20 g/l of Cu2S, a temperature increase of 23 °C was observed during 60 min. and in the infrared region, with 808 nm laser radiation, a 44 °C increase was observed for a concentration of 10 g/l of Cu2S. Also, surface evaporation of water in the presence of these nanoflowers was investigated with visible light irradiation and showed that the water evaporation increases up to 4 times with increasing the concentration of these nanoflowers

کلیدواژه‌ها [English]

  • Cu2S
  • Nanoflowers
  • Photothermal
  • Surface evaporation

مراجع

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نانومقیاس
دوره 10، شماره 2
مرداد 1402
صفحه 28-35

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سابقه مقاله

  • تاریخ دریافت: 14 دی 1401
  • تاریخ بازنگری: 20 بهمن 1401
  • تاریخ پذیرش: 14 فروردین 1402

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