TY - JOUR
T1 - Optical, structural and photocatalysis properties of Cu-doped TiO 2 thin films
AU - Bensouici, F.
AU - Bououdina, M.
AU - Dakhel, A. A.
AU - Tala-Ighil, R.
AU - Tounane, M.
AU - Iratni, A.
AU - Souier, T.
AU - Liu, S.
AU - Cai, W.
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/2/15
Y1 - 2017/2/15
N2 - Pure and Cu +2 doped TiO 2 thin films have been successfully deposited onto glass substrate by sol–gel dip-coating. The films were annealed at 450 °C for 1 h and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM-EDX), atomic force microscopy (AFM), UV–vis spectrophotometer and photocatalytic degradation of methylene blue. XRD confirmed the presence of two phases at higher Cu concentration; TiO 2 anatase and CuO. AFM analysis showed that the surface roughness increases within increasing Cu content as well as the presence of large aggregates at higher Cu content. SEM observations confirmed the granular structure of the films, and EDX analysis revealed a low solubility limit (effective doping) of Cu into TiO 2 lattice. It was found that the optical band gap energy decreases with increasing Cu content. At constant irradiation time, the photo-degradation of methylene blue rate decreased with increasing concentration of Cu +2 .
AB - Pure and Cu +2 doped TiO 2 thin films have been successfully deposited onto glass substrate by sol–gel dip-coating. The films were annealed at 450 °C for 1 h and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM-EDX), atomic force microscopy (AFM), UV–vis spectrophotometer and photocatalytic degradation of methylene blue. XRD confirmed the presence of two phases at higher Cu concentration; TiO 2 anatase and CuO. AFM analysis showed that the surface roughness increases within increasing Cu content as well as the presence of large aggregates at higher Cu content. SEM observations confirmed the granular structure of the films, and EDX analysis revealed a low solubility limit (effective doping) of Cu into TiO 2 lattice. It was found that the optical band gap energy decreases with increasing Cu content. At constant irradiation time, the photo-degradation of methylene blue rate decreased with increasing concentration of Cu +2 .
KW - Anatase TiO
KW - Cu doped TiO thin films
KW - Optical properties
KW - Photocatalytic activity
KW - Structural properties
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U2 - 10.1016/j.apsusc.2016.07.034
DO - 10.1016/j.apsusc.2016.07.034
M3 - Article
AN - SCOPUS:84999748177
SN - 0169-4332
VL - 395
SP - 110
EP - 116
JO - Applied Surface Science
JF - Applied Surface Science
ER -