NDLI: Magnetic Fe<sub>3</sub>O<sub>4</sub>@NiO hierarchical structures: preparation and their excellent As(v) and Cr(vi) removal capabilities

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Magnetic Fe₃O₄@NiO hierarchical structures: preparation and their excellent As(v) and Cr(vi) removal capabilities

Content Provider	Royal Society of Chemistry (RSC)
Author	Wang, Xiangke Wen, Tao Xu, Jinzhang Zhang, Shouwei Li, Jiaxing
Copyright Year	2013
Abstract	Uniform three-dimensional (3D) flowerlike Fe3O4@NiO hierarchical architectures were synthesized by a simple and direct solvothermal route without any linker shell. The shell thickness and hierarchical structure of the microspheres can be tuned by adjusting the reaction duration. The size of the hierarchical microspheres is 250–300 nm and the shell is composed of several nanoflakes with a thickness of 20–30 nm and a width of 50–60 nm. The microspheres possess high specific surface area of 125.63 m2 g−1 and high saturation magnetization, which allows them to have strong removal ability and are easily separated from solution by magnetic separation method. The microspheres are applied as adsorbents for As(V) and Cr(VI) ions removal from wastewater, and exhibit a high adsorption capacity with an adsorption capacity of ∼117.6 mg g−1 for As(V) and 184.2 mg g−1 for Cr(VI), which is mainly attributed to the large specific surface area and hierarchical structures of Fe3O4@NiO hierarchical microspheres. This work provides a promising approach for the design and synthesis of multifunctional microspheres, which can be used for water treatment, as well as having other potential applications in a variety of biomedical fields including drug delivery and biosensors.
Starting Page	2754
Ending Page	2764
Page Count	11
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	3
Issue Number	8
Journal	RSC Advances
DOI	10.1039/c2ra22495j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Adsorption Saturation (magnetic) Specific surface area Drug delivery Wastewater Three-dimensional space
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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Retraction: Magnetic Fe₃O₄@NiO hierarchical structures: preparation and their excellent As(v) and Cr(vi) removal capabilities.

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Magnetic Fe3O4@NiO hierarchical structures: preparation and their excellent As(v) and Cr(vi) removal capabilities

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Magnetic Fe₃O₄@NiO hierarchical structures: preparation and their excellent As(v) and Cr(vi) removal capabilities