PENGARUH VARIASI KONSENTRASI GARAM FeCl3.6H2O, SUHU KALSINASI DAN pH TERHADAP KARAKTER Fe-TiO2 YANG DISINTESIS MENGGUNAKAN METODE SOL-GEL
The effect of variations of concentration of FeCl3.6H2O, calcination temperature and pH solution on the synthesis of Fe-TiO2 by sol gel method had been studied. The synthesis of Fe-TiO2 was done by mixing titanium ( IV ) isopropoxide (TTIP) in ethanol and FeCl3.6H2O with the variation of concentrati...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| Online Access: | https://repository.ugm.ac.id/133251/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=73817 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | The effect of variations of concentration of FeCl3.6H2O, calcination
temperature and pH solution on the synthesis of Fe-TiO2 by sol gel method had
been studied. The synthesis of Fe-TiO2 was done by mixing titanium ( IV )
isopropoxide (TTIP) in ethanol and FeCl3.6H2O with the variation of
concentrations 1,2,3,4, and 5 wt%. The variations of calcination temperature were
done by using of FeCl3.6H2O 5 wt% at 300, 400, 500,600 and 700ºC. The
variations of pH solution of FeCl3.6H2O 5% were done by adding the acid or
base solution to adjust the pH at 2, 4, 6, 8 and 10. As control experiments,
undoped TiO2 was also synthesized using the same method without FeCl3.6H2O
addition. All samples were characterized by X-Ray Diffraction (XRD), Fourier
Transform Infrared (FTIR), Diffuse Reflectance UV Visible ( DR UV ), Scanning
Electron Microscopy with Energy Dispersive X Ray (SEM EDX) and
Transmission Electron Microscopy (TEM).
The XRD, DR-UV, FTIR and SEM EDX analysis showed that
concentration of 5 wt% of Fe dopant resulted a smaller crystal size that was
equal to 8.79 nm (TiO2=3,28 eV) which resulted a shift on the absorption spectra
to the visible region. The presence of Ti-O-Fe vibration absorption on FTIR at
wave number of 2200 cm- 1 indicated that the Fe has been successfully doped into
the TiO2. These results were supported by SEM EDX data that showed the a Fe
component was 1,52%. The XRD results showed that in temperature variations
obtained the best results at a temperature of 500º C and higher temperature of
calcination resulted in the transformation of crystal phase into rutile phase that
will lead the absorptions are more shifted towards the visible light. pH solution of
Fe salt affected the amount of Fe3+ species formed so in this variations the best
results were obtained at pH 2 because Fe3+ species are more formed in acidic pH. |
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