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	Formation of nickel-doped magnetite hollow nanospheres with high specific surface area and superior removal capability for organic molecules
	Li, Zhenhu1,2; Ma, Yurong1; Qi, Limin1
	2016-12-02
摘要	A strategy for the formation of magnetic NixFe3-xO4 hollow nanospheres with very high specific surface areas was designed through a facile solvothermal method in mixed solvents of ethylene glycol and water in this work. The Ni/Fe ratios and the crystal phases of the NixFe(3-x)O(4) hollow nanocrystals can be readily tuned by changing the molar ratios of Ni to Fe in the precursors. An inside-out Ostwald ripening mechanism was proposed for the formation of uniform NixFe(3-x)O(4) hollow nanospheres. Moreover, the obtained NixFe(3-x)O(4) hollow nanospheres exhibited excellent adsorption capacity towards organic molecules such as Congo red in water. The maximum adsorption capacities of NixFe(3-x)O(4) hollow nanospheres for Congo red increase dramatically from 263 to 500 mg g(-1) with the increase of the Ni contents (x) in NixFe(3-x)O(4) hollow nanospheres from 0.2 to 0.85. The synthesized NixFe(3-x)O(4) nanoparticles can be potentially applied for waste water treatment.
关键词	hollow nanospheres NixFe3-xO4 adsorption capacity solvothermal method
DOI	10.1088/0957-4484/27/48/485601
发表期刊	NANOTECHNOLOGY
ISSN	0957-4484
卷号	27期号:48页码:11
通讯作者	Ma, YR (reprint author), Peking Univ, Coll Chem, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China.
收录类别	SCI
WOS记录号	WOS:000387685500001
语种	英语