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One-pot polyelectrolyte assisted hydrothermal synthesis of NiFe2O4-reduced graphene oxide nanocomposites with improved electrochemical and photocatalytic properties

Published online by Cambridge University Press:  26 September 2014

Jianfeng Shen*
Affiliation:
Center of Special Materials and Technology, Fudan University, Shanghai 200433, China
Xianfu Li
Affiliation:
Center of Special Materials and Technology, Fudan University, Shanghai 200433, China
Weishi Huang
Affiliation:
Center of Special Materials and Technology, Fudan University, Shanghai 200433, China
Na Li
Affiliation:
Center of Special Materials and Technology, Fudan University, Shanghai 200433, China
Mingxin Ye*
Affiliation:
Center of Special Materials and Technology, Fudan University, Shanghai 200433, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Reduced graphene oxide–nickel ferrite (RGO–NiFe2O4) has been successfully synthesized by the hydrothermal method in the presence of poly(diallyldimethylammonium chloride) (PDDA). PDDA is used both as a reducing agent and as a stabilizer. The prepared RGO–NiFe2O4 nanocomposites have been thoroughly characterized by spectroscopic (Fourier-transform infrared spectroscopy, Raman spectroscopy, and x-ray diffraction) and thermogravimetric analysis. Microscopy techniques (scanning electron microscopy, atomic force microscopy, and transmission electron microscopy) were used to probe the morphological structures as well as to investigate the exfoliation of RGO sheets. It is interesting to find that RGO–NiFe2O4 nanocomposites exhibited much better electrochemical capability than NiFe2O4. In addition, the as-prepared RGO–NiFe2O4 nanocomposites can effectively remove methyl orange from water under ultraviolet light irradiation, which can be used as novel photocatalysts for environmental protection.

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Articles
Copyright
Copyright © Materials Research Society 2014 

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References

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