Fabrication and Characterization of Visible Light active Fe-TiO2 Nanocomposites as Nanophotocatalyst

نویسندگان

  • H. Ahadi Transport Phenomena and Nano Technology (TPNT) laboratory, Dept. of Chem. Eng., Faculty of Engineering, University of Tehran, Tehran, I. R. Iran
  • M. Akbari Transport Phenomena and Nano Technology (TPNT) laboratory, Dept. of Chem. Eng., Faculty of Engineering, University of Tehran, Tehran, I. R. Iran
  • M. Mirzaei Transport Phenomena and Nano Technology (TPNT) laboratory, Dept. of Chem. Eng., Faculty of Engineering, University of Tehran, Tehran, I. R. Iran
  • M. Shariaty-Niassar Transport Phenomena and Nano Technology (TPNT) laboratory, Dept. of Chem. Eng., Faculty of Engineering, University of Tehran, Tehran, I. R. Iran
چکیده مقاله:

   In this research Fe-TiO2 nanocomposites with different molar ratios of Fe/Ti were prepared as nano-photocatalyst using a modified Sol-Gel process at ambient temperature. Crystallographic properties of nanocomposites were characterized by X-ray Diffraction (XRD). Surface morphology and mean particle size of nanocomposites were specified by Field Emission Scanning Electron Microscopy (FESEM) and light absorption spectrum of nanocomposites was evaluated by Diffuse Reflectance Spectra (DRS). XRD patterns revealed that Fe3+ is successfully substituted by Ti4+ in TiO2 lattice and no rutile phase is present in nanocomposites. From FESEM images it was specified that mean particle size of nanocomposites changed in the range of 28-47nm and narrow size distribution was seen. DRS analysis represented that by doping of Fe into the TiO2 lattice, light absorption spectrum of TiO2 shifted to visible light spectrum and led to decrement in energy band gap of TiO2.Band gap of nano-photocatalysts was in the range of 1.98-2.89 eV.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

fabrication and characterization of visible light active fe-tio2 nanocomposites as nanophotocatalyst

in this research fe-tio2 nanocomposites with different molar ratios of fe/ti were prepared as nano-photocatalyst using a modified sol-gel process at ambient temperature. crystallographic properties of nanocomposites were characterized by x-ray diffraction (xrd). surface morphology and mean particle size of nanocomposites were specified by field emission scanning electron microscopy (fesem) and ...

متن کامل

Synthesis and characterization of visible light active S-doped TiO2 nanophotocatalyst

S-doped and bare mesoporous TiO2 were prepared using titanium tetraisopropoxide and thiocarbamide as raw materials. Prepared materials were characterized by means of fourier transform infrared spectroscopy FT-IR, thermogravimetry-differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), UV–Vis absorption spectroscopy, Brunauer–Emmett–Teller (BET) specific surface area and Barrett–Joy...

متن کامل

Synthesis and characterization of visible light active S-doped TiO2 nanophotocatalyst

S-doped and bare mesoporous TiO2 were prepared using titanium tetraisopropoxide and thiocarbamide as raw materials. Prepared materials were characterized by means of fourier transform infrared spectroscopy FT-IR, thermogravimetry-differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), UV–Vis absorption spectroscopy, Brunauer–Emmett–Teller (BET) specific surface area and Barrett–Joy...

متن کامل

A visible light driven doped TiO2 nanophotocatalyst: Preparation and characterization

A useful nanophotocatalyst (La,S-TiO2) was prepared by a sol-gel method and characterized by UV–vis diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), photoluminescence emission spectroscopy (PL) and scanning electron microscopy (FESEM). The results showed that the La,S-TiO2, which calcined at 550 °C, contained only anatase phaseand its crystal size was 23 nm...

متن کامل

A visible light driven doped TiO2 nanophotocatalyst: Preparation and characterization

A useful nanophotocatalyst (La,S-TiO2) was prepared by a sol-gel method and characterized by UV–vis diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), photoluminescence emission spectroscopy (PL) and scanning electron microscopy (FESEM). The results showed that the La,S-TiO2, which calcined at 550 °C, contained only anatase phaseand its crystal size was 23 nm...

متن کامل

synthesis and characterization of visible light active s-doped tio2 nanophotocatalyst

s-doped and bare mesoporous tio2 were prepared using titanium tetraisopropoxide and thiocarbamide as raw materials. prepared materials were characterized by means of fourier transform infrared spectroscopy ft-ir, thermogravimetry-differential scanning calorimetry (tg-dsc), x-ray diffraction (xrd), uv–vis absorption spectroscopy, brunauer–emmett–teller (bet) specific surface area and barrett–joy...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


عنوان ژورنال

دوره 11  شماره 4

صفحات  289- 293

تاریخ انتشار 2015-12-01

با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.

کلمات کلیدی

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023