Comparative activity of TiO2 microspheres and P25 powder for organic degradation: Implicative importance of structural defects and organic adsorption
文献类型：期刊论文
| 作者 | Wang, Chuan1; Liu, Hong1 ; Liu, Yuan1; He, Guang'an2; Jiang, Chengchun3
|
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2014-11-15 |
| 卷号 | 319页码:2-7 |
| 关键词 | Photocatalysis TiO2 microspheres P25 Organic degradation Defects |
| ISSN号 | 0169-4332 |
| DOI | 10.1016/j.apsusc.2014.05.014 |
| 通讯作者 | Liu, H (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China. |
| 英文摘要 | TiO2 microspheres have been employed as a promisingly new photocatalyst for water and wastewater treatment. P25 TiO2 is commonly employed and its properties are well established as photocatalyst. In this study, photocatalytic activities of the two TiO2 samples are compared by degrading sulfosalicylic acid (SSA), phenol, and 2,4-Dichlorophenoxyacetic acid (2,4-D) under 365 nm UV illumination in a suspension system at neutral pH and associated optimized TiO2 dosages. The results showed that the three organic compounds unexceptionally degraded more rapidly on P25 than on TiO2 microspheres in terms of the concentration-time curves and total organic carbon removals at 120 min. This might me attributed the presence of oxygen vacancies and Ti(III) defects already present on P25 as determined by electron paramagnetic resonance, implying that the defects played an important role for the enhancement of the charge transfer step as rate-determining step. The degradations of three organic compounds on P25 and TiO2 microspheres could be well described by the first-order rate equation, while the degradation kinetics of SSA on TiO2 microspheres was quite different. The difference was ascribed to the medium adsorption ability of SSA on the TiO2 surface. (C) 2014 Elsevier B. V. All rights reserved. |
| 资助项目 | Natural Science Foundation of China[51378494] ; Natural Science Foundation of China[51208539] ; Natural Science Foundation of China[51378316] ; Chinese Academy of Sciences |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000344616000002 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/887]  |
| 专题 | 水污染过程与治理研究中心 |
| 通讯作者 | Liu, Hong |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China 2.Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China 3.Shenzhen Polytech, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Chuan,Liu, Hong,Liu, Yuan,et al. Comparative activity of TiO2 microspheres and P25 powder for organic degradation: Implicative importance of structural defects and organic adsorption[J]. APPLIED SURFACE SCIENCE,2014,319:2-7. |
| APA | Wang, Chuan,Liu, Hong,Liu, Yuan,He, Guang'an,&Jiang, Chengchun.(2014).Comparative activity of TiO2 microspheres and P25 powder for organic degradation: Implicative importance of structural defects and organic adsorption.APPLIED SURFACE SCIENCE,319,2-7. |
| MLA | Wang, Chuan,et al."Comparative activity of TiO2 microspheres and P25 powder for organic degradation: Implicative importance of structural defects and organic adsorption".APPLIED SURFACE SCIENCE 319(2014):2-7. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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