Visible Light Photocatalytic Activities of Iron and Nickel Co-doped Titania Thin Films
Öz
Iron and nickel doped TiO2 thin films were prepared on glass slides by using sol-gel
and dip coating techniques. X-Ray Diffraction (XRD) analysis showed that there may be a
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solid state solubility limit of 2% on atomic basis and Fe/Ni oxide phases may be formed on
the TiO2 grain boundaries beyond this doping level. Diffuse Reflectance Spectroscopy (UVVIS
DRS) analysis showed that light absorption range of TiO2 was extended to visible light
region by Fe and Ni doping. Visible light photocatalytic activities of the prepared films were
determined by methylene blue degradation experiments. The highest activities were obtained
with 5% Fe and 1% Ni monodoped TiO2 films as 22% and 28%, respectively. TiO2 films codoped
with 1-5% Fe-Ni were prepared in the light of these findings and the highest activity
(34%) was achieved with 2% Fe-2% Ni co-doped TiO2 film. It was concluded that an
optimum nanophase structure and optical properties were achieved at this co-doping level.
Anahtar Kelimeler
Kaynakça
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Ayrıntılar
Birincil Dil
İngilizce
Konular
Mühendislik
Bölüm
-
Yayımlanma Tarihi
30 Aralık 2015
Gönderilme Tarihi
25 Ocak 2016
Kabul Tarihi
-
Yayımlandığı Sayı
Yıl 2015 Cilt: 5 Sayı: 2