| 有机颜料与表面活性剂DBS混合物的光催化降解 |
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| 引用本文： | 张天永,王昭,范巧芳,杨秋生,卢洲,李晓旭.有机颜料与表面活性剂DBS混合物的光催化降解[J].感光科学与光化学,2009(4). |
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| 作者姓名： | 张天永 王昭 范巧芳 杨秋生 卢洲 李晓旭 |
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| 作者单位： | 天津大学化工学院; |
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| 基金项目： | 教育部留学回国人员科研启动基金(教外司留[2002]247号);;天津市自然科学基金(033604711);;建设部科学技术项目基金(03-2-064)。 |
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| 摘 要： | 以TiO_2为光催化剂,研究了表面活性剂十二烷基苯磺酸钠(DBS)和有机颜料耐晒大红BBN(BBN)为混合组分的光催化降解,结果表明,pH值、底物的用量对体系的降解有显著影响,在碱性条件下,DBS的降解速率相对较快,而在酸性环境时,颜料的降解较快,在TiO_2等电点时,降解最慢,酸性条件下, TiO_2对BBN和DBS的吸附性比在碱性和中性环境中大,BBN/DBS体系中, DBS增大了BBN的水溶性,但是没有明显提高BBN的降解褪色速度,DBS浓度为0.42 g/L时,颜料降解最快,0.042 g/L时次之,2.1 g/L时最低,在BBN降解过程中DBS自身也被降解,且略有促进作用。
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| 关 键 词： | 耐晒大红BBN 表面活性剂 TiO_2 光催化 吸附 |
Photocatalytic Degradation of Organic Pigment and Surfactant DBS |
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| ZHANG Tian-yong,WANG Zhao,FAN Qiao-fang,YANG Qiu-sheng,LU Zhou,LI Xiao-xu.Photocatalytic Degradation of Organic Pigment and Surfactant DBS[J].Photographic Science and Photochemistry,2009(4). |
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| Authors: | ZHANG Tian-yong WANG Zhao FAN Qiao-fang YANG Qiu-sheng LU Zhou LI Xiao-xu |
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| Affiliation: | School of Chemical Engineering and Technology;Tianjin University;Tianjin 300072;P.R.China |
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| Abstract: | Photocatalytic degradation of surfactant sodium dodecyl benzenesulfonate(DBS) and organic pigment Light Fast Scarlet BBN(BBN) was investigated using TiO_2 as photocatalyst in aqueous solution under ultraviolet light irradiation.Degradation rate and the interaction mechanism of DBS and BBN were discussed.The results show that the degradation of the bicomponents depends on pH and substrate concentraction obviously.The degradation rate of DBS was faster in alkaline medium,but the discoloration rate of BBN was ... |
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| Keywords: | light fast scarlet BBN surfactant TiQ2 photocatalysis adsorption |
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