Ultrafine alpha-Fe(2)O(3) nanoparticles grown in confinement of in situ self-formed "cage" and their superior adsorption performance on arsenic(III)

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	Ultrafine alpha-Fe(2)O(3) nanoparticles grown in confinement of in situ self-formed "cage" and their superior adsorption performance on arsenic(III)
	W. S. Tang; Q. Li; C. F. Li; S. A. Gao; J. K. Shang
	2011
发表期刊	Journal of Nanoparticle Research
ISSN	1388-0764
卷号	13 期号:6 页码:2641-2651
摘要	Without the addition of surfactants or templates, ultrafine alpha-Fe(2)O(3) nanoparticles were successfully synthesized by a solvent thermal process at low temperature. During the synthesis, in situ self-formed "cage" of crystallized NaCl confined the growth of alpha-Fe(2)O(3) nanoparticles in both the precipitation and solvent thermal processes, resulting in the creation of well-crystallized alpha-Fe(2)O(3) nanoparticles with an average particle size about 4-5 nm and a high-specific surface area of similar to 162 m(2)/g. High resolution TEM investigations provided clear evidences of the in situ self-formation of NaCl "cage" during the synthesis and its confinement effect on the growth of alpha-Fe(2)O(3) nanoparticles. The superior performance of these alpha-Fe(2)O(3) nanoparticles on the adsorption of arsenite(III) (As) from aqueous environment was demonstrated with both lab-prepared and natural water samples at near neutral pH environment when compared with previously reported removal effects of As(III) by Fe(2)O(3). This unique approach may also be utilized in the synthesis of other ultrafine metal oxide nanoparticles for a broad range of technical applications.
部门归属	[tang, wenshu; li, qi; li, caifu; 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.;shang, jk (reprint author), univ illinois, dept mat sci & engn, 1304w green st, urbana, il 61801 usa;jkshang@illinois.edu
关键词	Alpha-fe(2)o(3) Nanoparticles Solvent Thermal Process In Situ Self-formed "cage" Arsenic(Iii) Adsorption Hematite Anhydrous Solvent Method Gas-sensing Properties Hydrothermal Synthesis Alpha-feooh Doped Gamma-fe2o3 Drinking-water Public-health Hematite Sorption Nanorods
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30704
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. S. Tang,Q. Li,C. F. Li,et al. Ultrafine alpha-Fe(2)O(3) nanoparticles grown in confinement of in situ self-formed "cage" and their superior adsorption performance on arsenic(III)[J]. Journal of Nanoparticle Research,2011,13(6):2641-2651.
APA	W. S. Tang,Q. Li,C. F. Li,S. A. Gao,&J. K. Shang.(2011).Ultrafine alpha-Fe(2)O(3) nanoparticles grown in confinement of in situ self-formed "cage" and their superior adsorption performance on arsenic(III).Journal of Nanoparticle Research,13(6),2641-2651.
MLA	W. S. Tang,et al."Ultrafine alpha-Fe(2)O(3) nanoparticles grown in confinement of in situ self-formed "cage" and their superior adsorption performance on arsenic(III)".Journal of Nanoparticle Research 13.6(2011):2641-2651.