Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| The photochemistry of carbon nanotubes and its impact on the photo-degradation of dye pollutants in aqueous solutions | |
| Wu, BD; Zhu, DX; Zhang, SJ; Lin, WZ; Wu, GZ; Pan, BC | |
| 2015 | |
| Source Publication | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| Volume | 439Pages:98—104 |
| Subtype | 期刊文献 |
| Abstract | It is reported that carbon nanotubes (CNTs) could either generate reactive oxygen species (ROS) under light irradiation or serve as high-efficient scavenger for ROS. However, it is unclear which role predominates as CNTs enter into aquatic environment. To answer this question, a systematic study of the photochemistry of a pristine and a surface-functionalized CNTs in aqueous suspensions was investigated with both time-resolved and steady state analytical approaches. The transient absorption spectra demonstrate that CNTs could be photo-ionized and trap hydrated electrons upon high energy irradiation. In steady state UV irradiation, CNTs could promote the generation of ROS, such as O-1(2) and (OH)-O-center dot. However, in the presence of H2O2, the (OH)-O-center dot scavenging effect predominated in the aqueous suspensions of CNTs. The presence of CNTs suppressed the photo-degradation of dye pollutants, as an integrated result of inner filter effect, adsorption effect, and ROS generation and scavenging effect. The results provide useful information for the understanding of the environmental implications of CNTs. (C) 2014 Elsevier Inc. All rights reserved. |
| Keyword | C-60 Radical-cation Photocatalytic Activity Electron-transfer Pulse-radiolysis Single-wall Laser Photolysis Water Tio2 Generation Transformations |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/24599 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Recommended Citation GB/T 7714 | Wu, BD,Zhu, DX,Zhang, SJ,et al. The photochemistry of carbon nanotubes and its impact on the photo-degradation of dye pollutants in aqueous solutions[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2015,439:98—104. |
| APA | Wu, BD,Zhu, DX,Zhang, SJ,Lin, WZ,Wu, GZ,&Pan, BC.(2015).The photochemistry of carbon nanotubes and its impact on the photo-degradation of dye pollutants in aqueous solutions.JOURNAL OF COLLOID AND INTERFACE SCIENCE,439,98—104. |
| MLA | Wu, BD,et al."The photochemistry of carbon nanotubes and its impact on the photo-degradation of dye pollutants in aqueous solutions".JOURNAL OF COLLOID AND INTERFACE SCIENCE 439(2015):98—104. |
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| The photochemistry o（1407KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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