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Efficient removal of fluoride by hierarchical MgO microspheres: Performance and mechanism study

文献类型：期刊论文

作者Jin, Zhen; Jia, Yong; Luo, Tao; Kong, Ling-Tao; Sun, Bai; Shen, Wei; Meng, Fan-Li; Liu, Jin-Huai
刊名APPLIED SURFACE SCIENCE
出版日期2015-12-01
卷号357期号:无页码:1080-1088
关键词Hierarchical Mgo Microspheres Fluoride Removal Adsorption Hydroxyl And Carbonate Co-exchange
DOI10.1016/j.apsusc.2015.09.127
文献子类Article
英文摘要Hierarchical MgO microspheres assembled by numerous porous nanoplates were successfully obtained by annealing the precursors of magnesium carbonate hydroxide hydrate synthesized through a facile and cost-effective hydrothermal process at low temperature. The as-prepared products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and Brunauer-Emmett-Teller measurements. The fluoride removal performance of the hierarchical MgO microspheres was investigated. The adsorption isotherm could be well fitted in Freundlich model, and the adsorption capacity was over 115.5 mg/g at pH 7. The absorbent also showed high fluoride removal ability in a wide pH range of 2-10, which is favorable for practical application. The effect of co-existing anions on fluoride removal was also investigated. The result indicated that the fluoride adsorption capacity was influenced when carbonate, bicarbonate and phosphate existed above the concentration of 50 mg/g. In addition, the adsorption mechanism was investigated by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. A novel hydroxyl and carbonate co-exchange mechanism has been proposed for the first time. It can be found that fluoride ions could replace the surface carbonates which formed by the reaction of MgO and the adsorbed CO2 molecules, and then anchored on the MgO surface. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词DRINKING-WATER ; AQUEOUS-SOLUTION ; MAGNESIUM-OXIDE ; ADSORPTION ; DEFLUORIDATION ; HYDROXIDE ; ADSORBENT ; SORPTION ; FE ; HYDROXYAPATITE
WOS研究方向Chemistry ; Materials Science ; Physics
语种英语
WOS记录号WOS:000366216900141
资助机构National Basic Research Program of China(2011CB933700) ; National Basic Research Program of China(2011CB933700) ; National Basic Research Program of China(2011CB933700) ; National Basic Research Program of China(2011CB933700) ; Key Technologies R & D Program of Anhui Province(1501021005) ; Key Technologies R & D Program of Anhui Province(1501021005) ; Key Technologies R & D Program of Anhui Province(1501021005) ; Key Technologies R & D Program of Anhui Province(1501021005) ; National Natural Science Foundation of China(61104205 ; National Natural Science Foundation of China(61104205 ; National Natural Science Foundation of China(61104205 ; National Natural Science Foundation of China(61104205 ; 61071054 ; 61071054 ; 61071054 ; 61071054 ; 51002157 ; 51002157 ; 51002157 ; 51002157 ; 21077106 ; 21077106 ; 21077106 ; 21077106 ; 21177131) ; 21177131) ; 21177131) ; 21177131) ; National Basic Research Program of China(2011CB933700) ; National Basic Research Program of China(2011CB933700) ; National Basic Research Program of China(2011CB933700) ; National Basic Research Program of China(2011CB933700) ; Key Technologies R & D Program of Anhui Province(1501021005) ; Key Technologies R & D Program of Anhui Province(1501021005) ; Key Technologies R & D Program of Anhui Province(1501021005) ; Key Technologies R & D Program of Anhui Province(1501021005) ; National Natural Science Foundation of China(61104205 ; National Natural Science Foundation of China(61104205 ; National Natural Science Foundation of China(61104205 ; National Natural Science Foundation of China(61104205 ; 61071054 ; 61071054 ; 61071054 ; 61071054 ; 51002157 ; 51002157 ; 51002157 ; 51002157 ; 21077106 ; 21077106 ; 21077106 ; 21077106 ; 21177131) ; 21177131) ; 21177131) ; 21177131)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/30227]  
专题合肥物质科学研究院_中科院合肥智能机械研究所
作者单位Chinese Acad Sci, Hefei Inst Phys Sci, Nanomat & Environm Detect Lab, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Jin, Zhen,Jia, Yong,Luo, Tao,et al. Efficient removal of fluoride by hierarchical MgO microspheres: Performance and mechanism study[J]. APPLIED SURFACE SCIENCE,2015,357(无):1080-1088.
APA Jin, Zhen.,Jia, Yong.,Luo, Tao.,Kong, Ling-Tao.,Sun, Bai.,...&Liu, Jin-Huai.(2015).Efficient removal of fluoride by hierarchical MgO microspheres: Performance and mechanism study.APPLIED SURFACE SCIENCE,357(无),1080-1088.
MLA Jin, Zhen,et al."Efficient removal of fluoride by hierarchical MgO microspheres: Performance and mechanism study".APPLIED SURFACE SCIENCE 357.无(2015):1080-1088.

入库方式： OAI收割

来源：合肥物质科学研究院

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