High photocatalytic activity of Cu2O/TiO2/Pt composite films prepared by magnetron sputtering

Cu2O/TiOa/Pt three-layer films were deposited on glass substrates using magnetron sputtering method. The surface morphology and the optical properties of the composite film were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, ultraviolet- visible spectroscopy （UV-Vis） a...

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Published inRare metals Vol. 36; no. 10; pp. 821 - 827
Main Authors Ren, Guang-Xiao, Yu, Bin, Liu, Yi-Ming, Wang, Hong-Xia, Zhang, Wang-Gang, Liang, Wei
Format Journal Article
LanguageEnglish
Published Beijing Nonferrous Metals Society of China 01.10.2017
Springer Nature B.V
Subjects
Anatase
Biomaterials
Catalytic activity
Chemistry and Materials Science
Copper oxides
Dyes
Energy
Light irradiation
Magnetic properties
Magnetron sputtering
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Optical properties
Particulate composites
Photocatalysis
Photoluminescence
Physical Chemistry
Platinum
Quantum efficiency
Spectrum analysis
Substrates
Titanium dioxide
Titanium oxides
X-ray diffraction
Photocatalytic activity
Visible light
Cu
Pt
O/TiO
Composite films
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ISSN1001-0521
1867-7185
DOI10.1007/s12598-016-0712-9

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Summary:Cu2O/TiOa/Pt three-layer films were deposited on glass substrates using magnetron sputtering method. The surface morphology and the optical properties of the composite film were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, ultraviolet- visible spectroscopy （UV-Vis） and photoluminescence spectroscopy （PL）. The photocatalytic activity of the samples was evaluated by the photocatalytic degradation of methyl orange （MO） aqueous solution under visible light irradiation. The results indicate that the Cu2O/TiO2/Pt composite films are made up of three layers which are Pt layer, anatase-TiO2 layer and Cu2O layer from bottom to top. The surface of the films is even and composed of regular-shaped spherical particles. The photocatalytic activity of the Cu2O/TiO2/Pt three-layer film is much higher than that of the Cu2O/TiO2 double-layer film. Such enhancement is ascribed to the presence of Pt layer, which further inhibits the photogenerated electron-hole recombination, prolongs the lifetime of the photogenerated carriers, increases the quantum efficiency and hence improves the photocatalytic activity of the film effectively.
Bibliography:Cu2O/TiOa/Pt three-layer films were deposited on glass substrates using magnetron sputtering method. The surface morphology and the optical properties of the composite film were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, ultraviolet- visible spectroscopy （UV-Vis） and photoluminescence spectroscopy （PL）. The photocatalytic activity of the samples was evaluated by the photocatalytic degradation of methyl orange （MO） aqueous solution under visible light irradiation. The results indicate that the Cu2O/TiO2/Pt composite films are made up of three layers which are Pt layer, anatase-TiO2 layer and Cu2O layer from bottom to top. The surface of the films is even and composed of regular-shaped spherical particles. The photocatalytic activity of the Cu2O/TiO2/Pt three-layer film is much higher than that of the Cu2O/TiO2 double-layer film. Such enhancement is ascribed to the presence of Pt layer, which further inhibits the photogenerated electron-hole recombination, prolongs the lifetime of the photogenerated carriers, increases the quantum efficiency and hence improves the photocatalytic activity of the film effectively.
Cu2O/TiO2/Pt; Composite films; Visible light;Photocatalytic activity
11-2112/TF
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-016-0712-9