Photocatalytic decomposition of the sodium dodecylbenzene sulfonate surfactant in aqueous titania suspensions exposed to highly concentrated solar radiation and effects of additives
文献类型：期刊论文
| 作者 | Zhang, TY; Oyama, T; Horikoshi, S; Zhao, JC; Serpone, N; Hidaka, H |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2003-04-15 |
| 卷号 | 42期号:1页码:13-24 |
| 关键词 | Photocatalytic Degradation Titanium Dioxide Potassium Persulfate Surfactant Sodium Dodecylbenzene Sulfonate |
| ISSN号 | 0926-3373 |
| 英文摘要 | The sodium dodecylbenzene sulfonate (DBS) surfactant photodegrades in aqueous titanium dioxide (TiO2) dispersions under highly concentrated solar light exposure (ca. 70 suns) via apparent first-order kinetics with accumulated light energy as the experimental variable. The choice of optimal experimental parameters for the photodegradation of DBS with a concentrated solar illumination device is explored: optimal circulation flow rate, 8.31 min(-1); pH, 5.0; and TiO2 loading, 5 g l(-1). Foaming action of the DBS-TiO2 suspension increased with increase in increments of the flow rate. The foam produced at the higher TiO2 loadings exhibited greater stability than in the absence of TiO2. The increase in surface tension is faster than the temporal decrease of the concentration of DBS, which followed the typical. Langmuir-Hinshelwood (LH) model: LH apparent rate constant, k(LH) = 0.184 mM kJ(-1); LH adsorption constant, K-LH = 0.527 mM(-1). The relative photonic efficiency, E,I; against phenol; k(app) of DBS is 0.53. The rate of removal of total organic carbon (TOC) of DBS was improved by a combination of TiO2 loading and added K2S2O8 additive; i.e. at pH 5.0 and TiO2 loading of 0.2 g l(-1), or pH 8.4 and TiO2 loading of 5.0 g l(-1). However, at pH 5.0 and TiO2 loading 5.0 g l(-1), the rate of TOC removal was not enhanced in the presence of K2S2O8 as the oxidizing agent and electron scavenger. The results are explained by contributions from the photochemical oxidation with K2S2O8 and from the K2S2O8-assisted photocatalytic oxidation of DBS. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000182337400002 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/80731]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Hidaka, H |
| 作者单位 | 1.Iwaki Meisei Univ, Frontier Res Ctr Global Environm Protect, Hino, Tokyo 1918506, Japan 2.Chinese Acad Sci, Inst Chem, Lab Photochem, Beijing 100080, Peoples R China 3.Concordia Univ, Dept Chem & Biochem, Montreal, PQ H3G 1M8, Canada |
| 推荐引用方式 GB/T 7714 | Zhang, TY,Oyama, T,Horikoshi, S,et al. Photocatalytic decomposition of the sodium dodecylbenzene sulfonate surfactant in aqueous titania suspensions exposed to highly concentrated solar radiation and effects of additives[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2003,42(1):13-24. |
| APA | Zhang, TY,Oyama, T,Horikoshi, S,Zhao, JC,Serpone, N,&Hidaka, H.(2003).Photocatalytic decomposition of the sodium dodecylbenzene sulfonate surfactant in aqueous titania suspensions exposed to highly concentrated solar radiation and effects of additives.APPLIED CATALYSIS B-ENVIRONMENTAL,42(1),13-24. |
| MLA | Zhang, TY,et al."Photocatalytic decomposition of the sodium dodecylbenzene sulfonate surfactant in aqueous titania suspensions exposed to highly concentrated solar radiation and effects of additives".APPLIED CATALYSIS B-ENVIRONMENTAL 42.1(2003):13-24. |
入库方式： OAI收割
来源：化学研究所
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