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
发表期刊JOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
卷号341页码:268-276
摘要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.
关键词Mgo Nanosheets Ultrasonic Exfoliation Adsorption Selenite(Se(Iv)) Selenate (Se(Vi))
文章类型Article
WOS标题词Science & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1016/j.jhazmat.2017.07.073
收录类别SCI
语种英语
关键词[WOS]IRON-OXIDES ; DIFFERENT MORPHOLOGIES ; SURFACE-AREA ; REMOVAL ; SELENATE ; MECHANISM ; WATER ; EXFOLIATION ; MAGNESIUM ; CAPACITY
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS类目Engineering, Environmental ; Environmental Sciences
项目资助者National Natural Science Foundation of China(51574212 ; U1403195)
WOS记录号WOS:000412378700029
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23265
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.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
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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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