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

被引：12
作者：
Ren, Guang-Xiao [1 ,2 ]
Yu, Bin [1 ,2 ]
Liu, Yi-Ming [1 ,2 ]
Wang, Hong-Xia [1 ,2 ]
Zhang, Wang-Gang [1 ,2 ]
Liang, Wei [1 ,2 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
[2] Taiyuan Univ Technol, Minist Educ, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Shanxi, Peoples R China
来源：
RARE METALS | 2017年 / 36卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Cu2O/TiO2/Pt; Composite films; Visible light; Photocatalytic activity; DOPED TIO2 NANOPARTICLES; WATER; DEGRADATION; MECHANISM; OXIDE;
D O I：
10.1007/s12598-016-0712-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cu2O/TiO2/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.
引用
收藏
页码：821 / 827
页数：7
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