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Rapid degradation of aqueous doxycycline by surface CoFe2O4/H2O2 system: behaviors, mechanisms, pathways and DFT calculation
Hong, Peidong1,2; Li, Yulian1,2; He, Junyong1; Saeed, Abdul1,2; Zhang, Kaisheng1; Wang, Chengming2; Kong, Lingtao1; Liu, Jinhuai1
2020-10-01
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Corresponding AuthorKong, Lingtao(ltkong@iim.ac.cn)
AbstractHeterogeneous 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.
KeywordCoFe2O4 Doxycycline Heterogeneous Fenton Electronic transfer DFT calculation
DOI10.1016/j.apsusc.2020.146557
WOS KeywordADVANCED OXIDATION PROCESSES ; HETEROGENEOUS FENTON DEGRADATION ; HYDROXYL RADICAL FORMATION ; INDUSTRIAL WASTE-WATER ; PHOTOCATALYTIC ACTIVITY ; EFFICIENT DEGRADATION ; CATALYTIC-ACTIVITY ; DRINKING-WATER ; BISPHENOL-A ; IRON-OXIDES
Indexed BySCI
Language英语
Funding ProjectState 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]
Funding OrganizationState Key Research Development Program of China ; Natural Science Foundation of China ; Science and Technology Major Projects of Anhui Province ; China Postdoctoral Science Foundation
WOS Research AreaChemistry ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000566866700009
PublisherELSEVIER
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/104052
Collection中国科学院合肥物质科学研究院
Corresponding AuthorKong, Lingtao
Affiliation1.Chinese Acad Sci, Inst Intelligent Machines, Nanomat & Environm Detect Lab, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
Recommended Citation
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).
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