Preparation of PTF-sensitized TiO2 hollow microspheres and visible-light catalytic properties

被引：0

作者：

Lu, Pan ^{[1
]}

Yao, Bing-Hua ^{[1
]}

Zhang, Wen ^{[2
]}

Peng, Chao ^{[1
]}

Zhang, Ting ^{[1
]}

机构：

[1] Department of Applied Chemistry, Xi'an University of Technology, Xi'an

[2] Department of Civil Engineering, University of Arkansas, Fayetteville

来源：

Gongneng Cailiao/Journal of Functional Materials | 2014年 / 45卷 / 20期

关键词：

Degradation; Dye-sensitized; Hollow microspheres; TiO[!sub]2[!/sub; Visible-light photocatalysis;

D O I：

10.3969/j.issn.1001-9731.2014.20.023

中图分类号：

学科分类号：

摘要：

Using polymethyl methacrylate (PMMA) microspheres as template, the TiO2 hollow microspheres (h-TiO2) were prepared by hydrothermal method. The 9-phenyl-2, 3, 7-trihydroxy-6-fluorone (PTF) used as sensitizer, the h-TiO2 hollow microspheres were dye-sensitized by using immersion method, and a novel dye-sensitized TiO2 hollow microspheres (PTF-h-TiO2) was successfully synthesized. The morphology and structures of samples were characterized by the SEM, XRD, FT-IR and UV-Vis DRS. The effects of the parameters such as hydrothermal time and temperature, addition amount of template and calcination temperature on the photocatalytic activity of samples were investigated respectively. The optimum synthesis condition of the h-TiO2 preparation was obtained to be the 5% addition amount of template, hydrothermal time of 6 h, hydrothermal temperature of 120 ℃. The photocatalytic activities of h-TiO2 and PTF-h-TiO2 microspheres were also evaluated by degradation of methylene blue(MB) and chloramphenicol(CAP) under UV visible-light. The results showed that the h-TiO2 hollow microspheres possessed UV-visible photocatalytic activity, and the PTF-h-TiO2 hollow microspheres exhibited excellent visible-light catalytic activity. The degradation rate of as-prepared PTF-h-TiO2 was quit high, up to about 98.1% in 50 min for 10 mg/L MB solution, and about 86.9% in 120 min for 20 mg/L CAP solution under Xe lamp irradiation (>400 nm). ©, 2014, Journal of Functional Materials. All right reserved.

引用

页码：20107 / 20112and20117

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