Fe-TiO2 particles were synthesized by sol-gel process from hydrolysis of titanium tetra-isopropoxide with nitric acid and
ferric nitrate aqueous solutions (relative Fe:Ti molar ratio ranging from 1 to 6 at %) followed by hydrothermal treatment.
Thin films were deposited onto conducting glass electrodes from a suspension with polyethylene glycol and heating at
450 °C for 30 min, which resulted in 1.5 μm thick transparent porous films. Crystalline samples, 93 % anatase and 7 %
brookite, were obtained. Increasing the iron amount, the crystallite size estimated from XRD patterns ranged from 18 to
11 nm and the color varied from slightly yellow to brown. The optical properties have also changed; the absorption edge
shifted towards longer wavelengths, with band gap energy decreasing from 3.0 to 2.7 eV. The films exhibited
photocatalytic activity for phenol degradation that indicates promising applications in solar energy conversion.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.