Characterization and the photocatalytic activity of tio(2) immobilized hydrophobic montmorillonite photocatalysts degradation of decabromodiphenyl ether (bde 209)
文献类型：期刊论文
| 作者 | An, Taicheng1; Chen, Jiaxin1,3; Li, Guiying1; Ding, Xuejun1,3; Sheng, Guoying1; Fu, Jiamo1; Mai, Bixian1; O'Shea, Kevin E.2 |
| 刊名 | Catalysis today
 |
| 出版日期 | 2008-12-15 |
| 卷号 | 139期号:1-2页码:69-76 |
| 关键词 | Polybrominated diphenyl ethers Montmorillonite Tio(2) photocatalysis Advanced oxidation |
| ISSN号 | 0920-5861 |
| DOI | 10.1016/j.cattod.2008.08.024 |
| 通讯作者 | An, taicheng(antc99@gig.ac.cn) |
| 英文摘要 | A novel tio(2) immobilized hydrophobic montmorillonite photocatalysts were designed and prepared for the advanced oxidation of persistent organic pollutants in water, which combined the pre-adsorption and concentrated effects for aqueous micro-organic pollutants with the photocatalytic destruction of organic pollutants. the photocatalysts were synthesized by immobilizing tio(2) onto surfactant-pillared montmorillonite via ion exchange reaction between sodium montmorillonite with cation surfactant, cetyl trimethyl ammonium bromide (ctmab). the degussa p25 catalyst loading amounts varied between 20 and 80%. the composition and texture of the prepared composites were characterized with x-ray powder diffraction, scanning electron microscope, and energy-dispersive spectrometry. the adsorption performance and photocatalytic activities of prepared composite photocatalysts were evaluated using decabromodiphenyl ether (bde 209) as a model pollutant in aqueous solution. the results were found that these composite photocatalysts can effectively degrade bde 209, and the complete removal can be achieved within 180 min of irradiation. the removal efficiency of bde 209 increased with the percentage of immobilized tio(2) on the hydrophobic clay. highly hydrophobic substrates (bde 209) can effectively adsorb (concentrate) in or near the hydrophobic surfactant regions of tio(2) immobilized ctmab-pillared montmorillonite photocatalysts. the degradation pathways involving photochemical debromination and hydroxyl radical addition are proposed based on the identification of specific by-products. (c) 2008 elsevier b.v. all rights reserved. |
| WOS关键词 | BROMINATED FLAME RETARDANTS ; POLYBROMINATED DIPHENYL ETHERS ; CLAY ; PHOTODEGRADATION ; DEBROMINATION ; ENVIRONMENT ; PRODUCTS ; RADICALS ; WATER ; UV |
| WOS研究方向 | Chemistry ; Engineering |
| WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000261325800012 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2392306 |
| 专题 | 中国科学院大学 |
| 通讯作者 | An, Taicheng |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Resources Utilizat & P, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | An, Taicheng,Chen, Jiaxin,Li, Guiying,et al. Characterization and the photocatalytic activity of tio(2) immobilized hydrophobic montmorillonite photocatalysts degradation of decabromodiphenyl ether (bde 209)[J]. Catalysis today,2008,139(1-2):69-76. |
| APA | An, Taicheng.,Chen, Jiaxin.,Li, Guiying.,Ding, Xuejun.,Sheng, Guoying.,...&O'Shea, Kevin E..(2008).Characterization and the photocatalytic activity of tio(2) immobilized hydrophobic montmorillonite photocatalysts degradation of decabromodiphenyl ether (bde 209).Catalysis today,139(1-2),69-76. |
| MLA | An, Taicheng,et al."Characterization and the photocatalytic activity of tio(2) immobilized hydrophobic montmorillonite photocatalysts degradation of decabromodiphenyl ether (bde 209)".Catalysis today 139.1-2(2008):69-76. |
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来源：中国科学院大学
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