As(III) and As(V) Adsorption by Hydrous Zirconium Oxide Nanoparticles Synthesized by a Hydrothermal Process Followed with Heat Treatment

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	As(III) and As(V) Adsorption by Hydrous Zirconium Oxide Nanoparticles Synthesized by a Hydrothermal Process Followed with Heat Treatment
	C. Hang; Q. Li; S. Gao; J. K. Shang
	2012
发表期刊	Industrial & Engineering Chemistry Research
ISSN	0888-5885
卷号	51 期号:1 页码:353-361
摘要	Hydrous zirconium oxide (ZrO(2)center dot xH(2)O) were synthesized by a low-cost hydrothermal process followed with heat treatment. ZrO(2)center dot xH(2)O nanoparticles ranged from 6 nm to 10 nm and formed highly porous aggregates, resulting in a large surface area of 161.8 m(2) g(-1). The batch tests on the laboratory water samples demonstrated a very high degree of As(III) and As(V) removal by ZrO(2)center dot xH(2)O nanoparticles. The adsorption mechanism study demonstrated that both arsenic species form inner-sphere surface complexes on the surface of ZrO(2)center dot xH(2)O nanoparticles. Higher arsenic removal effect of these ZrO(2)center dot xH(2)O nanoparticles were demonstrated, compared with commercially available Al(2)O(3) and TiO(2) nanoparticles. Ionic strength and competing ion effects on the arsenic adsorption of these ZrO(2)center dot xH(2)O nanopartides were also studied. Testing with natural lake water confirmed the effectiveness of ZrO(2)center dot xH(2)O nanopartides in removing arsenic species from natural water, and the immobilization of ZrO(2)center dot xH(2)O nanoparticles on glass fiber cloth minimized the dispersion of nanoparticles into the treated body of water. The high adsorption capacity of ZrO(2)center dot xH(2)O nanoparticles is shown to result from the strong inner-sphere surface complexing promoted by the high surface area, large pore volume, and surface hydroxyl groups of zirconium oxide nanoparticles.
部门归属	[hang, cui; li, qi; gao, shian; shang, jian ku] chinese acad sci, inst met res, mat ctr water purificat, shenyang natl lab mat sci, 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 natl lab mat sci, shenyang 110016, peoples r china.;qili@imr.ac.cn
关键词	Nanocrystalline Titanium-dioxide Acid Chelating Resin Arsenic Removal Drinking-water Adsorbent Goethite Kinetics Zro2
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59988
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. Hang,Q. Li,S. Gao,et al. As(III) and As(V) Adsorption by Hydrous Zirconium Oxide Nanoparticles Synthesized by a Hydrothermal Process Followed with Heat Treatment[J]. Industrial & Engineering Chemistry Research,2012,51(1):353-361.
APA	C. Hang,Q. Li,S. Gao,&J. K. Shang.(2012).As(III) and As(V) Adsorption by Hydrous Zirconium Oxide Nanoparticles Synthesized by a Hydrothermal Process Followed with Heat Treatment.Industrial & Engineering Chemistry Research,51(1),353-361.
MLA	C. Hang,et al."As(III) and As(V) Adsorption by Hydrous Zirconium Oxide Nanoparticles Synthesized by a Hydrothermal Process Followed with Heat Treatment".Industrial & Engineering Chemistry Research 51.1(2012):353-361.