Treatment of Dye and Isopropanol in Aqueous Solution by UV/La2Ti2O7 process

碩士 === 國立臺灣科技大學 === 化學工程系 === 94 === A highly donor-doped (110) layered perovskite, La2Ti2O7, was found to be an efficient photocatalyst under UV irradiation. The activity depended on the crystalline phase and the surface area of perovskite oxide. The grinding methods of the mixed oxide precursors b...

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Main Authors: Ling-Chi Wang, 王鈴祺
Other Authors: Young Ku
Format: Others
Language:en_US
Published: 2006
Online Access:http://ndltd.ncl.edu.tw/handle/66aex8
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spelling ndltd-TW-094NTUS50630082018-06-25T06:05:11Z http://ndltd.ncl.edu.tw/handle/66aex8 Treatment of Dye and Isopropanol in Aqueous Solution by UV/La2Ti2O7 process 以紫外線/La2Ti2O7程序分別處理含染料及異丙醇水溶液之研究 Ling-Chi Wang 王鈴祺 碩士 國立臺灣科技大學 化學工程系 94 A highly donor-doped (110) layered perovskite, La2Ti2O7, was found to be an efficient photocatalyst under UV irradiation. The activity depended on the crystalline phase and the surface area of perovskite oxide. The grinding methods of the mixed oxide precursors before sintering as well as the sintering temperature affected the crystalline phase and the surface area of the formed perovskite. La2Ti2O7 in this study was prepared by solid state reaction (SSR) and the obtained powders were characterized by XRD, SEM, UV-DRS, XPS and zeta potential. Photocatalytic degradation of dye and IPA in aqueous solution by UV/ La2Ti2O7 process was studied. The experiments were carried out under solution pH, initial concentration of RR22 and IPA, UV light intensity and catalyst loading. Photocatalytic degradation of RR22 and IPA in aqueous solution by UV/ La2Ti2O7 process was increased with increasing UV light intensity and catalyst loading. Photocatalytic degradation of RR22 and IPA in aqueous solution by UV/ La2Ti2O7 process was decreased with increasing initial concentration. Photocatalyst degradation was better in acid than in alkaline solution for IPA in aqueous solution by UV/ La2Ti2O7 process but the experimental trend of RR22 was different from IPA. The reaction rate of photocatalytic degradation was faster at pH=3.0, the slowest at pH=7.0 and that suddenly increased at solution pH 8.0~11.0. Reaction rate of RR22 photocatalytic degradation was faster than that of photolysis in acidic solution but reaction rate of RR22 photocatalytic degradation was slower than that of photolysis at pH=10.0~pH=11.0. Young Ku 顧洋 2006 學位論文 ; thesis 145 en_US
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language en_US
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description 碩士 === 國立臺灣科技大學 === 化學工程系 === 94 === A highly donor-doped (110) layered perovskite, La2Ti2O7, was found to be an efficient photocatalyst under UV irradiation. The activity depended on the crystalline phase and the surface area of perovskite oxide. The grinding methods of the mixed oxide precursors before sintering as well as the sintering temperature affected the crystalline phase and the surface area of the formed perovskite. La2Ti2O7 in this study was prepared by solid state reaction (SSR) and the obtained powders were characterized by XRD, SEM, UV-DRS, XPS and zeta potential. Photocatalytic degradation of dye and IPA in aqueous solution by UV/ La2Ti2O7 process was studied. The experiments were carried out under solution pH, initial concentration of RR22 and IPA, UV light intensity and catalyst loading. Photocatalytic degradation of RR22 and IPA in aqueous solution by UV/ La2Ti2O7 process was increased with increasing UV light intensity and catalyst loading. Photocatalytic degradation of RR22 and IPA in aqueous solution by UV/ La2Ti2O7 process was decreased with increasing initial concentration. Photocatalyst degradation was better in acid than in alkaline solution for IPA in aqueous solution by UV/ La2Ti2O7 process but the experimental trend of RR22 was different from IPA. The reaction rate of photocatalytic degradation was faster at pH=3.0, the slowest at pH=7.0 and that suddenly increased at solution pH 8.0~11.0. Reaction rate of RR22 photocatalytic degradation was faster than that of photolysis in acidic solution but reaction rate of RR22 photocatalytic degradation was slower than that of photolysis at pH=10.0~pH=11.0.
author2 Young Ku
author_facet Young Ku
Ling-Chi Wang
王鈴祺
author Ling-Chi Wang
王鈴祺
spellingShingle Ling-Chi Wang
王鈴祺
Treatment of Dye and Isopropanol in Aqueous Solution by UV/La2Ti2O7 process
author_sort Ling-Chi Wang
title Treatment of Dye and Isopropanol in Aqueous Solution by UV/La2Ti2O7 process
title_short Treatment of Dye and Isopropanol in Aqueous Solution by UV/La2Ti2O7 process
title_full Treatment of Dye and Isopropanol in Aqueous Solution by UV/La2Ti2O7 process
title_fullStr Treatment of Dye and Isopropanol in Aqueous Solution by UV/La2Ti2O7 process
title_full_unstemmed Treatment of Dye and Isopropanol in Aqueous Solution by UV/La2Ti2O7 process
title_sort treatment of dye and isopropanol in aqueous solution by uv/la2ti2o7 process
publishDate 2006
url http://ndltd.ncl.edu.tw/handle/66aex8
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