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Catalytic ozonation of antibiotics by using Mg(OH)(2) nanosheet with dot-sheet hierarchical structure as novel nanoconfined catalyst

Wu, Jun1; Sun, Qi2; Lu, Jian2,3,4
Source PublicationCHEMOSPHERE
ISSN0045-6535
2022-09-01
Volume302Pages:9
KeywordHierarchical-structurenano-Mg(OH)(2) Catalytic ozonation mechanism Nano-confinement effect Antibiotics Removal mechanism
DOI10.1016/j.chemosphere.2022.134835
AbstractAntibiotic pollution has caused important concern for international and national sustainability. Catalytic ozonation is a quick and efficient technique to remove contaminants in aquatic environment. This study firstly developed a nanosheet-growth technique for synthesizing Li-doped Mg(OH)(2) with dot-sheet hierarchical structure as catalyst to ozonize antibiotics. Metronidazole could be totally removed through ozonation catalyzed by Li-doped Mg(OH)(2) in 10 min. Approximately 97% of metronidazole was eliminated in 10 min even the catalyst was used for 4 times. Reaction rate constant of Li-doped Mg(OH)(2) treatment was about 3.45 times that of nano-Mg(OH)(2) treatment, illustrating that the dot-sheet hierarchical structure of Li-doped Mg(OH)(2) exhibited nano-confinement effect on the catalytic ozonation. Approximately 70.4% of metronidazole was mineralized by cat-alytic ozonation using Li-doped Mg(OH)(2). Temperature of 25 ? was more suitable for catalytic ozonation of metronidazole by Li-doped Mg(OH)(2). Ions generally inhibited the catalytic ozonation of metronidazole while only 0.005 mol L-1 of Cl- slightly enhanced the ozonation rate, illustrating complicated mechanisms existed for ozonation of metronidazole catalyzed by Li-doped Mg(OH)(2). The possible mechanisms of the ozonation of metronidazole using Li-doped Mg(OH)(2) included direct ozonation and ozonation catalyzed by radical & BULL;O-2(-), reactive oxygen species O-1(2) and intermediate (H2O2). The synthesized Mg(OH)(2) nanosheet with dot-sheet hierarchical structure is a novel nanoconfined material with excellent reusability and catalytic performance.
Indexed BySCI
Language英语
WOS KeywordCATALYTIC OZONATION ; PHOTOCATALYTIC OZONATION ; WASTE-WATER ; THIN-FILMS ; DEGRADATION ; NANOCOMPOSITE ; MGO ; MAGNESIUM ; REMOVAL ; LITHIUM
WOS Research AreaEnvironmental Sciences & Ecology
WOS IDWOS:000802786800007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/31150
Collection中科院海岸带环境过程与生态修复重点实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
Corresponding AuthorLu, Jian
Affiliation1.Harbin Engn Univ, Yantai Res Inst, Yantai 264006, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China
3.Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Wu, Jun,Sun, Qi,Lu, Jian.

Catalytic ozonation of antibiotics by using Mg(OH)(2) nanosheet with dot-sheet hierarchical structure as novel nanoconfined catalyst

[J]. CHEMOSPHERE,2022,302:9.
APA Wu, Jun,Sun, Qi,&Lu, Jian.(2022).

Catalytic ozonation of antibiotics by using Mg(OH)(2) nanosheet with dot-sheet hierarchical structure as novel nanoconfined catalyst

.CHEMOSPHERE,302,9.
MLA Wu, Jun,et al."

Catalytic ozonation of antibiotics by using Mg(OH)(2) nanosheet with dot-sheet hierarchical structure as novel nanoconfined catalyst

".CHEMOSPHERE 302(2022):9.
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