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B. YARMAND1,* , S. K. SADRNEZHAAD2
Pd2+-doped TiO2 thin films with mesoporous structure were produced on quartz substrate by sol-gel dip coating. The structural, morphological and optical properties of the film were characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), transmission electron microscopy (TEM), atomic force microscopy (AFM) and UV/vis transmittance spectroscopy. By increasing the Pd2+ concentration from 0 to 6 mol%, the crystallites appeared solely as the anatase phase and their average sizes decreased from 10.5 to 7.1 nm. Addition of Pd2+ also resulted in increasing of the specific surface area and decreasing of the pore size of the layer. The transmittance of the films decreased in the visible light region and the absorption edges shifted to the longer wavelengths by increasing of the Pd2+ doped concentration. Optical band-gaps of the undoped and 6 mol% Pd2+-doped films were 3.52 and 3.31 eV, respectively. The refractive index of the films decreased from 1.83 to 1.71 and their porosity increased from 56.3 to 63.7% by increasing of the Pd2+ doping concentration from 0 to 6 mol%..
Pd2+-doped, Mesoporous TiO2, Thin films, Structural and optical properties.
B. YARMAND, S. K. SADRNEZHAAD, Structural and optical properties of Pd2+-doped mesoporous TiO2 thin films prepared by sol-gel templating technique, Optoelectronics and Advanced Materials - Rapid Communications, 4, 10, October 2010, pp.1572-1577 (2010).
Submitted at: Sept. 18, 2010
Accepted at: Oct. 14, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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