Photocatalytic activity of anatase titanium dioxide nanostructures prepared by reactive magnetron sputtering technique

Journal Article · Tue Jan 15 04:00:00 EST 2019 · Optical and Quantum Electronics

DOI:https://doi.org/10.1007/S11082-018-1738-Z· OSTI ID:22950434

Al-Oubidy, Esraa A.

In this work, nanostructured titanium dioxide (TiO{sub 2}) photocatalysts with high optical and structural homogeneity were successfully synthesized by dc reactive magnetron sputtering technique. The TiO{sub 2} thin films were produced with high structural homogeneity without any heat treatment. Analysis of the X-ray diffraction patterns and UV–visible spectroscopy gave an indication that the structure of prepared films is anatase with energy band gap of 3.23 eV. The Fourier-transform infrared spectroscopy has confirmed the formation of Ti–O bond. The average size of TiO{sub 2} particles in the deposited films was ranging in 5–7 nm. These nanostructures are very applicable as photocatalysts as their photocatalytic activity was determined from the degradation rate with UV irradiation time as the first order reaction rate constant was determined to be 2.4 × 10{sup −3} min{sup −1}.

• OSTI ID: 22950434
• Journal Information: Optical and Quantum Electronics, Journal Name: Optical and Quantum Electronics Journal Issue: 1 Vol. 51; ISSN OQELDI; ISSN 0306-8919
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FOURIER TRANSFORM SPECTROMETERS
HEAT TREATMENTS
IRRADIATION
MAGNETRONS
NANOSTRUCTURES
PHOTOCATALYSIS
REACTION KINETICS
SPECTROSCOPY
SPUTTERING
THIN FILMS
TITANIUM OXIDES
X-RAY DIFFRACTION