Photocatalytic reactive oxygen species generation activity of TiO2 improved by the modification of persistent free radicals
文献类型：期刊论文
| 作者 | Liu, Jianli4; Dong, Guohui4; Jing, Jun4; Zhang, Shuyun4; Huang, Yu3; Ho, Wingkei1,2 |
| 刊名 | ENVIRONMENTAL SCIENCE-NANO
 |
| 出版日期 | 2021-11-08 |
| 页码 | 9 |
| ISSN号 | 2051-8153 |
| DOI | 10.1039/d1en00832c |
| 通讯作者 | Dong, Guohui(dongguohui@sust.edu.cn) |
| 英文摘要 | Environmentally persistent free radicals (EPFRs) may help mineral dust to produce more reactive oxygen species (ROS). However, the mechanism of this effect is not yet clear. Therefore, in this study, anatase modified with EPFRs was synthesized via a simple two-step method. The presence of EPFRs was confirmed using a series of characterization techniques, including electron paramagnetic resonance and nuclear magnetic resonance. Herein, we found that EPFRs can improve OH generation via the oxidation reaction between photogenerated holes (h(+)) and OH- (or H2O). This result was due to two reasons. The first is that the EPFRs construct a built-in electric field, which helps the migration of h(+) from the bulk to the surface of anatase and then to EPFRs. The other reason is that EPFRs help anatase adsorb more H2O molecules, which are then oxidized to OH by h(+). This study will help to understand the photochemical production mechanism of ROS on the surface of mineral dust. |
| WOS关键词 | HETEROGENEOUS REACTION ; HYDROXYL RADICALS ; ORGANIC-COMPOUNDS ; CHEMISTRY ; KINETICS ; SUNLIGHT ; MODEL ; HONO |
| 资助项目 | National Nature Science Foundation of China[21876104] ; National Nature Science Foundation of China[21603109] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010300] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010000] |
| WOS研究方向 | Chemistry ; Environmental Sciences & Ecology ; Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000721930400001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Nature Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China |
| 源URL | [http://ir.ieecas.cn/handle/361006/17226]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Dong, Guohui |
| 作者单位 | 1.Hong Kong Inst Educ, Ctr Educ Environm Sustainabil, Tai Po, Hong Kong, Peoples R China 2.Hong Kong Inst Educ, Dept Sci & Environm Studies, Tai Po, Hong Kong, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China 4.Shaanxi Univ Sci & Technol, Sch Environm Sci & Engn, Xian 710021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jianli,Dong, Guohui,Jing, Jun,et al. Photocatalytic reactive oxygen species generation activity of TiO2 improved by the modification of persistent free radicals[J]. ENVIRONMENTAL SCIENCE-NANO,2021:9. |
| APA | Liu, Jianli,Dong, Guohui,Jing, Jun,Zhang, Shuyun,Huang, Yu,&Ho, Wingkei.(2021).Photocatalytic reactive oxygen species generation activity of TiO2 improved by the modification of persistent free radicals.ENVIRONMENTAL SCIENCE-NANO,9. |
| MLA | Liu, Jianli,et al."Photocatalytic reactive oxygen species generation activity of TiO2 improved by the modification of persistent free radicals".ENVIRONMENTAL SCIENCE-NANO (2021):9. |
入库方式： OAI收割
来源：地球环境研究所
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