Photocatalytic behavior of TiO(2) nanoparticles supported on porous aluminosilicate surface modified by cationic surfactant
In order to utilize the photocatalytic function of TiO(2) nanoparticles in materials manufactured from organic polymeric compounds, such as paper, resins, and textiles, TiO(2) nanoparticles supported on aluminosilicate, which contained 1, 5, and 10 wt% of TiO(2) were prepared by mixing commercial Ti...
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Veröffentlicht in: | Advanced powder technology : the international journal of the Society of Powder Technology, Japan Japan, 2009-11, Vol.20 (6), p.598-604 |
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container_title | Advanced powder technology : the international journal of the Society of Powder Technology, Japan |
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creator | Nikaido, Masanori Furuya, Sachiko Kakui, Toshio Kamiya, Hidehiro |
description | In order to utilize the photocatalytic function of TiO(2) nanoparticles in materials manufactured from organic polymeric compounds, such as paper, resins, and textiles, TiO(2) nanoparticles supported on aluminosilicate, which contained 1, 5, and 10 wt% of TiO(2) were prepared by mixing commercial TiO(2) nanoparticles and porous aluminosilicate at pH 7 in a cationic surfactant aqueous solution. Most of the supported TiO(2) nanoparticles on the aluminosilicate surface were observed by TEM-EDS (energy depressive X-ray spectroscopy) analysis. TiO(2) nanoparticles supported on aluminosilicate reduced the formaldehyde concentration from 20 to 0 ppm after UV irradiation for 20 h; the reduction of formaldehyde concentration under UV irradiation was obviously different from that in the dark. Moreover, a paper mixed with 20 wt% of TiO(2) nanoparticles supported on aluminosilicate bleached the stains colored with cigarette tar after UV irradiation for 6 h. However, the paper maintained its initial tensile strength even after UV irradiation for 1 year; in contrast, the paper mixed with a simple dry mixture of TiO(2) powder and aluminosilicate lost approximately half of its initial tensile strength after a year. TiO(2) nanoparticles supported on aluminosilicate could exhibit photocatalytic activity without decomposing the organic polymeric compounds. |
doi_str_mv | 10.1016/j.apt.2009.10.003 |
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Most of the supported TiO(2) nanoparticles on the aluminosilicate surface were observed by TEM-EDS (energy depressive X-ray spectroscopy) analysis. TiO(2) nanoparticles supported on aluminosilicate reduced the formaldehyde concentration from 20 to 0 ppm after UV irradiation for 20 h; the reduction of formaldehyde concentration under UV irradiation was obviously different from that in the dark. Moreover, a paper mixed with 20 wt% of TiO(2) nanoparticles supported on aluminosilicate bleached the stains colored with cigarette tar after UV irradiation for 6 h. However, the paper maintained its initial tensile strength even after UV irradiation for 1 year; in contrast, the paper mixed with a simple dry mixture of TiO(2) powder and aluminosilicate lost approximately half of its initial tensile strength after a year. 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Most of the supported TiO(2) nanoparticles on the aluminosilicate surface were observed by TEM-EDS (energy depressive X-ray spectroscopy) analysis. TiO(2) nanoparticles supported on aluminosilicate reduced the formaldehyde concentration from 20 to 0 ppm after UV irradiation for 20 h; the reduction of formaldehyde concentration under UV irradiation was obviously different from that in the dark. Moreover, a paper mixed with 20 wt% of TiO(2) nanoparticles supported on aluminosilicate bleached the stains colored with cigarette tar after UV irradiation for 6 h. However, the paper maintained its initial tensile strength even after UV irradiation for 1 year; in contrast, the paper mixed with a simple dry mixture of TiO(2) powder and aluminosilicate lost approximately half of its initial tensile strength after a year. 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Most of the supported TiO(2) nanoparticles on the aluminosilicate surface were observed by TEM-EDS (energy depressive X-ray spectroscopy) analysis. TiO(2) nanoparticles supported on aluminosilicate reduced the formaldehyde concentration from 20 to 0 ppm after UV irradiation for 20 h; the reduction of formaldehyde concentration under UV irradiation was obviously different from that in the dark. Moreover, a paper mixed with 20 wt% of TiO(2) nanoparticles supported on aluminosilicate bleached the stains colored with cigarette tar after UV irradiation for 6 h. However, the paper maintained its initial tensile strength even after UV irradiation for 1 year; in contrast, the paper mixed with a simple dry mixture of TiO(2) powder and aluminosilicate lost approximately half of its initial tensile strength after a year. TiO(2) nanoparticles supported on aluminosilicate could exhibit photocatalytic activity without decomposing the organic polymeric compounds.</abstract><doi>10.1016/j.apt.2009.10.003</doi></addata></record> |
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title | Photocatalytic behavior of TiO(2) nanoparticles supported on porous aluminosilicate surface modified by cationic surfactant |
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