Exceptional As(III) Sorption Capacity by Highly Porous Magnesium Oxide Nanoflakes Made from Hydrothermal Synthesis

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	Exceptional As(III) Sorption Capacity by Highly Porous Magnesium Oxide Nanoflakes Made from Hydrothermal Synthesis; Exceptional As(III) Sorption Capacity by Highly Porous Magnesium Oxide Nanoflakes Made from Hydrothermal Synthesis
	Y. Liu; Q. Li; S. A. Gao; J. K. Shang
	2011 ; 2011
发表期刊	Journal of the American Ceramic Society ; Journal of the American Ceramic Society
ISSN	0002-7820 ; 0002-7820
卷号	94 期号:1 页码:118-124
摘要	Highly porous magnesium oxide (MgO) nanoflakes were synthesized by the calcination of magnesium hydroxide nanoflakes created by a hydrothermal process. These MgO nanoflakes have a high specific surface area at 115.9 m2/g, and a total pore volume of similar to 0.254 cm3/g. They demonstrated an exceptional As(III) removal performance from aqueous solutions, and their maximum sorption capacity could reach 506.6 mg/g, much higher than most reported values from other metal oxide nanomaterials. Such a high As(III) sorption capacity was found to depend on the in situ formation of Mg(OH)(2) owing to the interaction of MgO nanoflakes with water. While preserving most of the large surface area of MgO nanoflakes, the in situ formed Mg(OH)(2) had high affinity to As(III) in aqueous environment, and could react with As(III) to form a magnesium-arsenite compound, which is ultimately responsible for the exceptionally high As(III) sorption capacity of MgO nanoflakes.; Highly porous magnesium oxide (MgO) nanoflakes were synthesized by the calcination of magnesium hydroxide nanoflakes created by a hydrothermal process. These MgO nanoflakes have a high specific surface area at 115.9 m2/g, and a total pore volume of similar to 0.254 cm3/g. They demonstrated an exceptional As(III) removal performance from aqueous solutions, and their maximum sorption capacity could reach 506.6 mg/g, much higher than most reported values from other metal oxide nanomaterials. Such a high As(III) sorption capacity was found to depend on the in situ formation of Mg(OH)(2) owing to the interaction of MgO nanoflakes with water. While preserving most of the large surface area of MgO nanoflakes, the in situ formed Mg(OH)(2) had high affinity to As(III) in aqueous environment, and could react with As(III) to form a magnesium-arsenite compound, which is ultimately responsible for the exceptionally high As(III) sorption capacity of MgO nanoflakes.
部门归属	[liu, yang; li, qi; gao, shian; shang, jian ku] chinese acad sci, inst met res, mat ctr water purificat, shenyang 110016, peoples r china. [shang, jian ku] univ illinois, dept mat sci & engn, urbana, il 61801 usa.;li, q (reprint author), chinese acad sci, inst met res, mat ctr water purificat, shenyang 110016, peoples r china;qili@imr.ac.cn ; [liu, yang; li, qi; gao, shian; shang, jian ku] chinese acad sci, inst met res, mat ctr water purificat, shenyang 110016, peoples r china. [shang, jian ku] univ illinois, dept mat sci & engn, urbana, il 61801 usa.;li, q (reprint author), chinese acad sci, inst met res, mat ctr water purificat, shenyang 110016, peoples r china;qili@imr.ac.cn
关键词	Arsenic Removal Arsenic Removal Titanium-dioxide Titanium-dioxide Water Water Adsorption Adsorption Remediation Remediation Groundwater Groundwater Hydroxide Hydroxide
URL	查看原文 ; 查看原文
WOS记录号	WOS:000285972100017 ; WOS:000285972100017
引用统计	被引频次：78[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30551
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Liu,Q. Li,S. A. Gao,et al. Exceptional As(III) Sorption Capacity by Highly Porous Magnesium Oxide Nanoflakes Made from Hydrothermal Synthesis, Exceptional As(III) Sorption Capacity by Highly Porous Magnesium Oxide Nanoflakes Made from Hydrothermal Synthesis[J]. Journal of the American Ceramic Society, Journal of the American Ceramic Society,2011, 2011,94, 94(1):118-124, 118-124.
APA	Y. Liu,Q. Li,S. A. Gao,&J. K. Shang.(2011).Exceptional As(III) Sorption Capacity by Highly Porous Magnesium Oxide Nanoflakes Made from Hydrothermal Synthesis.Journal of the American Ceramic Society,94(1),118-124.
MLA	Y. Liu,et al."Exceptional As(III) Sorption Capacity by Highly Porous Magnesium Oxide Nanoflakes Made from Hydrothermal Synthesis".Journal of the American Ceramic Society 94.1(2011):118-124.