Insights into adsorption mechanism for fluoride on cactus-like amorphous alumina oxide microspheres

doi:10.1016/j.cej.2018.03.174

CORC > 化学研究所 > 中国科学院化学研究所

	Insights into adsorption mechanism for fluoride on cactus-like amorphous alumina oxide microspheres
	Kang, Dongjuan 1,2; Yu, Xiaolin 2,3; Ge, Maofa 2,3,4; Lin, Mengya 2,3; Yang, Xueqin 2,3; Jing, Yuanyuan 2
刊名	CHEMICAL ENGINEERING JOURNAL
	2018-08-01
卷号	345 页码:252-259
关键词	Fluoride Amorphous Alumina Adsorption Mechanism
ISSN号	1385-8947
DOI	10.1016/j.cej.2018.03.174
英文摘要	Cactus-like amorphous alumina microspheres (CA-AlOx) were fabricated by a facile solvothermal method without templates. The as-prepared CA-AlOx material exhibited the amorphous structure which is beneficial to the large specific surface area, developed pore structure, abundant functional groups and high reactivity of coordinatively unsaturated Al species. The maximum adsorption capacity of CA-AlOx was calculated to be 129.4 mg/g for fluoride, which was higher than that of many adsorbents reported. Moreover, the CA-AlOx exhibited fast adsorption rate, high interference resistance and good reusable ability. Adsorption mechanism and relationship between amorphous structure and adsorption performance for fluoride on the CA-AlOx were investigated systematically by various characterization techniques. The adsorption mechanism of fluoride on the CA-AlOx was mainly through the chemical coordination of unsaturated Al-species AlO4 and AlO5 by fluoride ions to form the AlF3 and [AlF6](3-) species by XPS and NMR analysis. Also, ion exchange, electrostatic adsorption and pore filling were also involved in the adsorption process. These results suggested that the CA-AlOx has great application potential for deep purification of fluoride-contaminated drinking water.
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000430696500026
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/43123]
专题	中国科学院化学研究所
通讯作者	Yu, Xiaolin; Ge, Maofa
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Kang, Dongjuan,Yu, Xiaolin,Ge, Maofa,et al. Insights into adsorption mechanism for fluoride on cactus-like amorphous alumina oxide microspheres[J]. CHEMICAL ENGINEERING JOURNAL,2018,345:252-259.
APA	Kang, Dongjuan,Yu, Xiaolin,Ge, Maofa,Lin, Mengya,Yang, Xueqin,&Jing, Yuanyuan.(2018).Insights into adsorption mechanism for fluoride on cactus-like amorphous alumina oxide microspheres.CHEMICAL ENGINEERING JOURNAL,345,252-259.
MLA	Kang, Dongjuan,et al."Insights into adsorption mechanism for fluoride on cactus-like amorphous alumina oxide microspheres".CHEMICAL ENGINEERING JOURNAL 345(2018):252-259.