Extremely high arsenic removal capacity for mesoporous aluminium magnesium oxide composites

CORC > 化学研究所 > 中国科学院化学研究所 > 分子纳米结构与纳米技术实验室

	Extremely high arsenic removal capacity for mesoporous aluminium magnesium oxide composites
	Li, Wei 1,5; Chen, Dehong 2; Xia, Fang 1,3; Tan, Jeannie Z. Y.1,2; Huang, Pei-Pei 4; Song, Wei-Guo 4; Nursam, Natalita M.1,2; Caruso, Rachel A.1,2
刊名	ENVIRONMENTAL SCIENCE-NANO
	2016
卷号	3 期号:1 页码:94-106
英文摘要	Mesoporous aluminium magnesium oxide composites with varying composition (Mg content: 0-100%) and high surface area (118-425 m(2) g(-1)) are synthesized by a facile, low-cost and scalable sol-gel method. The mesostructure and crystallinity are controlled by varying the composition and calcination temperature. The mesopores evolve from hexagonally ordered to wormhole-like in structure with increasing Mg/Al ratio. The mesoporous aluminium magnesium oxide composites are highly efficient adsorbents for removing As(V) and As(III) from water. The mesoporous magnesium oxide shows unprecedentedly high adsorption capacities of 912 mg g(-1) for As(V) at pH 3 and 813 mg g(-1) for As(III) at pH 7 with a dose of 0.5 g L-1; significantly higher than those of reported adsorbents. Exceptional adsorption capacities for arsenic are retained over a wide pH range, and high selectivity for As(V) is realized even in the presence of co-existing anions. The arsenic adsorption performance correlates to the properties of the composites including the Mg/Al ratio, point of zero charge, crystallinity and mesostructure. The arsenic adsorption mechanism is elucidated. Due to their high surface areas, large pore volumes, tunable mesopore structures and high quantities of accessible hydroxyl groups with strong chemisorption binding affinity to arsenic, as well as extremely high adsorption capacities and selectivity, these mesoporous aluminium magnesium oxides are promising adsorbent candidates for the remediation of arsenic in water.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/36072]
专题	化学研究所_分子纳米结构与纳米技术实验室
作者单位	1.CSIRO Mfg, Clayton, Vic 3169, Australia 2.Univ Melbourne, Sch Chem, Particulate Fluids Proc Ctr, Melbourne, Vic 3010, Australia 3.Murdoch Univ, Sch Engn & Informat Technol, Murdoch, WA 6150, Australia 4.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China 5.Int Iberian Nanotechnol Lab INL, Ave Mestre Jose Veiga, P-4715330 Braga, Portugal
推荐引用方式 GB/T 7714	Li, Wei,Chen, Dehong,Xia, Fang,et al. Extremely high arsenic removal capacity for mesoporous aluminium magnesium oxide composites[J]. ENVIRONMENTAL SCIENCE-NANO,2016,3(1):94-106.
APA	Li, Wei.,Chen, Dehong.,Xia, Fang.,Tan, Jeannie Z. Y..,Huang, Pei-Pei.,...&Caruso, Rachel A..(2016).Extremely high arsenic removal capacity for mesoporous aluminium magnesium oxide composites.ENVIRONMENTAL SCIENCE-NANO,3(1),94-106.
MLA	Li, Wei,et al."Extremely high arsenic removal capacity for mesoporous aluminium magnesium oxide composites".ENVIRONMENTAL SCIENCE-NANO 3.1(2016):94-106.