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

doi:10.1016/j.chemosphere.2022.134835

	Catalytic ozonation of antibiotics by using Mg(OH)(2) nanosheet with dot-sheet hierarchical structure as novel nanoconfined catalyst
	Wu, Jun 1; Sun, Qi 2; Lu, Jian2,3,4
发表期刊	CHEMOSPHERE
ISSN	0045-6535
	2022-09-01
卷号	302 页码:9
关键词	Hierarchical-structurenano-Mg(OH)(2) Catalytic ozonation mechanism Nano-confinement effect Antibiotics Removal mechanism
DOI	10.1016/j.chemosphere.2022.134835
英文摘要	Antibiotic 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.
收录类别	SCI
语种	英语
关键词[WOS]	CATALYTIC OZONATION ; PHOTOCATALYTIC OZONATION ; WASTE-WATER ; THIN-FILMS ; DEGRADATION ; NANOCOMPOSITE ; MGO ; MAGNESIUM ; REMOVAL ; LITHIUM
研究领域[WOS]	Environmental Sciences & Ecology
WOS记录号	WOS:000802786800007
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/31150
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学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
通讯作者	Lu, Jian
作者单位	1.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
推荐引用方式 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.