Active oxygen species (O-1(2), O-2(center dot-)) generation in the system of TiO2 colloid sensitized by hypocrellin B
文献类型：期刊论文
| 作者 | Xu, SJ; Shen, JQ; Chen, S; Zhang, MH; Shen, T |
| 刊名 | JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
 |
| 出版日期 | 2002-05-01 |
| 卷号 | 67期号:1页码:64-70 |
| 关键词 | Hypocrellin b Tio2 Colloid Time-resolved Absorption Spectra Epr Active Oxygen |
| ISSN号 | 1011-1344 |
| 英文摘要 | TiO2 semiconductor colloids have been successfully employed in environmental clean-Lip, antibacterial and bactericidal action under ultraviolet light due to its strong redox ability and high yield of active oxygen species (O-1(2), O-2(.-), (OOH)-O-.) generation. Hypocrellin B, isolated from Hypocrella bambusae (B.et.Br) Sacc, a natural pigment with strong and broad absorption over the visible light region, was used in our work in an attempt to extend the photoresponse of TiO2 to visible light and maintain the high generation of active oxygen under visible light illumination. The formation of the HB-TiO2 chelate was characterized by UV-Vis and surface enhanced raman spectroscopy (SERS) and it was found that the chelate still had high efficiency of active oxygen generation. The possible generation mechanism was explored by Electron Paramagnetic Resonance (EPR) and time-resolved transient spectra techniques, showing that singlet oxygen (O-1(2)) and superoxide radical anion (O-2(.-)) were produced via energy transfer and electron transfer, respectively. The application of HB-TiO2 chelate in environment protection and bacteria sterilization was implied. (C) 2002 Elsevier Science BY All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000175787800009 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/78357]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, MH |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, SJ,Shen, JQ,Chen, S,et al. Active oxygen species (O-1(2), O-2(center dot-)) generation in the system of TiO2 colloid sensitized by hypocrellin B[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,2002,67(1):64-70. |
| APA | Xu, SJ,Shen, JQ,Chen, S,Zhang, MH,&Shen, T.(2002).Active oxygen species (O-1(2), O-2(center dot-)) generation in the system of TiO2 colloid sensitized by hypocrellin B.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,67(1),64-70. |
| MLA | Xu, SJ,et al."Active oxygen species (O-1(2), O-2(center dot-)) generation in the system of TiO2 colloid sensitized by hypocrellin B".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 67.1(2002):64-70. |
入库方式： OAI收割
来源：化学研究所
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