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Type: 
Journal
Description: 
This work shows the application of metal ion-implantation to realize an efficient second-generation TiO2 photocatalyst. High fluence Fe+ ions were implanted into thin TiO2 films and subsequently annealed up to 550 °C. The ion-implantation process modified the TiO2 pure film, locally lowering its band-gap energy from 3.2 eV to 1.6–1.9 eV, making the material sensitive to visible light. The measured optical band-gap of 1.6–1.9 eV was associated with the presence of effective energy levels in the energy band structure of the titanium dioxide, due to implantation-induced defects. An accurate structural characterization was performed by Rutherford backscattering spectrometry, transmission electron microscopy, Raman spectroscopy, X-ray diffraction, and UV/VIS spectroscopy. The synthesized materials revealed a remarkable photocatalytic efficiency in the degradation of organic compounds in water under visible …
Publisher: 
AIP Publishing
Publication date: 
7 Nov 2014
Authors: 

G Impellizzeri, V Scuderi, L Romano, PM Sberna, E Arcadipane, R Sanz, M Scuderi, G Nicotra, Maxime Bayle, Robert Carles, F Simone, V Privitera

Biblio References: 
Volume: 116 Issue: 17 Pages: 173507
Origin: 
Journal of Applied Physics