Photocatalytic degradation of Rhodamine B under visible light with Nd-doped titanium dioxide films |
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| Authors: | WU Xiaohong SU Peibo LIU Huiling QI Lili |
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| Affiliation: | aState Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150001, China;bDepartment of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China;cSchool of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Microporous titanium dioxide films were prepared by the sol-gel methods on glass substrates, using tetrabutyl titanate as source material. In order to absorb the visible light and increase the photocatalytic activities, different concentrations of neodymium ions (Nd/Ti molar ratio was 0.5%, 0.7%, 0.9%, and 1.1% respectively) were added into the sol. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and atom force microscopy (AFM) were applied to characterize the modified films. A kind of typical textile industry pollutant (Rhodamine B) was used to evaluate the photocatalytic activities of the films under visible light. The results showed that the activities of the films were improved by doping Nd ions into the sol. |
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| Keywords: | titanium dioxide visible light doping ion photocatalysis Rhodamine B rare earths |
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