Rapid degradation of aqueous doxycycline by surface CoFe2O4/H2O2 system: behaviors, mechanisms, pathways and DFT calculation
文献类型：期刊论文
| 作者 | Hong, Peidong1,2; Li, Yulian1,2; He, Junyong2; Saeed, Abdul1,2; Zhang, Kaisheng2; Wang, Chengming1; Kong, Lingtao2 ; Liu, Jinhuai2
|
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 526 |
| ISSN号 | 0169-4332 |
| 关键词 | CoFe2O4 Doxycycline Heterogeneous Fenton Electronic transfer DFT calculation |
| DOI | 10.1016/j.apsusc.2020.146557 |
| 通讯作者 | Kong, Lingtao(ltkong@iim.ac.cn) |
| 英文摘要 | Heterogeneous Fenton technology is considered to be an effective method to solve the issues of antibiotic pollutants. In this study, a highly active surface exposed CoFe2O4 catalyst was fabricated to activate hydrogen peroxide (H2O2) to degrade aqueous doxycycline (DC). Batch experiments investigated the influence of different factors such as CoFe2O4 dosage, H2O2 dosage, contaminant concentration and pH on DC elimination. Remarkably, the results showed that 1.2 g/L CoFe2O4 with 10 mM H2O2 could quickly remove 92% DC of 20 ppm under neutral pH conditions in 10 min, and after 5 cycles, the removal of DC still remained above 85%. DMPO-X signals captured by EPA illustrated abundant hydroxyl radicals ('OH) were produced in the surface CoFe2O4/H2O2 system swiftly and that was the dominant active oxygen species in the degradation of DC. The valence changes of Co3+/Co2+ and Fe3+/Fe2+ appeared on the surface of CoFe2O4 provided many electrons to participate in the process of activating H2O2. Density functional theory (DFT) calculation was conducted to reveal preferable sites of different atoms on DC for radicals attacking. Combined with LC-MS analysis, two possible degradation pathways were proposed. |
| WOS关键词 | ADVANCED OXIDATION PROCESSES ; HETEROGENEOUS FENTON DEGRADATION ; HYDROXYL RADICAL FORMATION ; INDUSTRIAL WASTE-WATER ; PHOTOCATALYTIC ACTIVITY ; EFFICIENT DEGRADATION ; CATALYTIC-ACTIVITY ; DRINKING-WATER ; BISPHENOL-A ; IRON-OXIDES |
| 资助项目 | State Key Research Development Program of China[2019YFC0408500] ; Natural Science Foundation of China[2196182] ; Natural Science Foundation of China[61873253] ; Natural Science Foundation of China[61875206] ; Science and Technology Major Projects of Anhui Province[18030801104] ; China Postdoctoral Science Foundation[2019M652227] |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000566866700009 |
| 资助机构 | State Key Research Development Program of China ; Natural Science Foundation of China ; Science and Technology Major Projects of Anhui Province ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/104051]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Kong, Lingtao |
| 作者单位 | 1.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Intelligent Machines, Nanomat & Environm Detect Lab, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hong, Peidong,Li, Yulian,He, Junyong,et al. Rapid degradation of aqueous doxycycline by surface CoFe2O4/H2O2 system: behaviors, mechanisms, pathways and DFT calculation[J]. APPLIED SURFACE SCIENCE,2020,526. |
| APA | Hong, Peidong.,Li, Yulian.,He, Junyong.,Saeed, Abdul.,Zhang, Kaisheng.,...&Liu, Jinhuai.(2020).Rapid degradation of aqueous doxycycline by surface CoFe2O4/H2O2 system: behaviors, mechanisms, pathways and DFT calculation.APPLIED SURFACE SCIENCE,526. |
| MLA | Hong, Peidong,et al."Rapid degradation of aqueous doxycycline by surface CoFe2O4/H2O2 system: behaviors, mechanisms, pathways and DFT calculation".APPLIED SURFACE SCIENCE 526(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。