Adsorption study of selenium ions from aqueous solutions using MgO nanosheets synthesized by ultrasonic method

doi:10.1016/j.jhazmat.2017.07.073

	Adsorption study of selenium ions from aqueous solutions using MgO nanosheets synthesized by ultrasonic method
	Cui, Wenwen 1,2; Li, Ping1 ; Wang, Zheming 3; Zheng, Shili 1; Zhang, Yi 1
	2018-01-05
发表期刊	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
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
DOI	10.1016/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
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
推荐引用方式 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.