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Adsorption study of selenium ions from aqueous solutions using MgO nanosheets synthesized by ultrasonic method
Cui, Wenwen1,2; Li, Ping1; Wang, Zheming3; Zheng, Shili1; Zhang, Yi1
2018-01-05
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume341Pages:268-276
Abstract

MgO nanosheets with thickness ranges of 3-10 molecule layers and high specific area (166.44 m(2) g(-1)) were successfully fabricated by an ultrasound-assisted exfoliation method and used as adsorbent for the removal of both selenite (Se(IV)) and selenate (Se(VI)) from aqueous solutions. The resulting MgO nanosheets displayed high maximum adsorption capacities of 103.52 and 10.28 mg g(-1) for Se(IV) and Se(VI), respectively. ATR-FTIR and XPS spectroscopic results suggested that both Se(IV) and Se(VI) formed inner-sphere surface complexes on MgO nanosheets under the present experimental conditions. Furthermore, high adsorption capacity for Se(IV/VI) in the presence of coexistent anions (SO42-, PO43-, Cl-, and F-) and efficient regeneratability of adsorbent by NaOH solution were observed in the competitive adsorption and regeneration steps. The simple one-step synthesis process of MgO nanosheets and high adsorption capacities offer a promising method for Se(IV/VI) removal in water treatment. (C) 2017 Elsevier B.V. All rights reserved.

KeywordMgo Nanosheets Ultrasonic Exfoliation Adsorption Selenite(Se(Iv)) Selenate (Se(Vi))
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1016/j.jhazmat.2017.07.073
Indexed BySCI
Language英语
WOS KeywordIron-oxides ; Different Morphologies ; Surface-area ; Removal ; Selenate ; Mechanism ; Water ; Exfoliation ; Magnesium ; Capacity
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China(51574212 ; U1403195)
WOS IDWOS:000412378700029
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23265
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, 1 North 2nd St, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Pacific Northwest Natl Lab, Phys & Computat Sci Directorate, Richland, WA 99354 USA
Recommended Citation
GB/T 7714
Cui, Wenwen,Li, Ping,Wang, Zheming,et al. Adsorption study of selenium ions from aqueous solutions using MgO nanosheets synthesized by ultrasonic method[J]. JOURNAL OF HAZARDOUS MATERIALS,2018,341:268-276.
APA Cui, Wenwen,Li, Ping,Wang, Zheming,Zheng, Shili,&Zhang, Yi.(2018).Adsorption study of selenium ions from aqueous solutions using MgO nanosheets synthesized by ultrasonic method.JOURNAL OF HAZARDOUS MATERIALS,341,268-276.
MLA Cui, Wenwen,et al."Adsorption study of selenium ions from aqueous solutions using MgO nanosheets synthesized by ultrasonic method".JOURNAL OF HAZARDOUS MATERIALS 341(2018):268-276.
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