Effects of Mineral Tourmaline Particles on Photocatalytic Activities of RE/TiO2 Composite Thin Films
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第3期
论文作者：Xu Gangke LIANG Jinsheng Meng Junping Ding Yan
Key words：sol-gel method; thin films; composite materials; titanium dioxide; tourmaline; formaldehyde; photocatalytic activities; microstructure;
Abstract: The composite TiO2 films containing the mineral tourmaline particles and rare earth elements (T/RE/TiO2 )were prepared by a sol-gel method using Ti( OC4H9 )4 as raw material. The microstructure and forming mechanism of T/RE/TiO2 films were studied by scanning electron microscope (SEM). Effects of tourmaline on the photocatalytic activities of RE/TiO2 were determined by photocatalytic degradation of formaldehyde. The results show that the photocatalytic degradation ratio of formaldehyde increases by 44.2% with the composite films of Ce/TiO2 containing 0.04%tourmaline, more than that with the thin films of Ce/TiO2 under UV irradiation.
Xu Gangke1，LIANG Jinsheng1，Meng Junping1，Ding Yan1
(1.Institute of Power Source & Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China)
Abstract:The composite TiO2 films containing the mineral tourmaline particles and rare earth elements (T/RE/TiO2 )were prepared by a sol-gel method using Ti( OC4H9 )4 as raw material. The microstructure and forming mechanism of T/RE/TiO2 films were studied by scanning electron microscope (SEM). Effects of tourmaline on the photocatalytic activities of RE/TiO2 were determined by photocatalytic degradation of formaldehyde. The results show that the photocatalytic degradation ratio of formaldehyde increases by 44.2% with the composite films of Ce/TiO2 containing 0.04%tourmaline, more than that with the thin films of Ce/TiO2 under UV irradiation.
Key words:sol-gel method; thin films; composite materials; titanium dioxide; tourmaline; formaldehyde; photocatalytic activities; microstructure;
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