Hydrothermal synthesis of magnetic CoFe2O4/graphene nanocomposites with improved photocatalytic activity

Lu Gan; Songmin Shang; Chun Wah Marcus Yuen; Shou-xiang Kinor Jiang; Enling Hu

doi:10.1016/j.apsusc.2015.05.130

Hydrothermal synthesis of magnetic CoFe₂O₄/graphene nanocomposites with improved photocatalytic activity

Lu Gan, Songmin Shang, Chun Wah Marcus Yuen, Shou-xiang Kinor Jiang, Enling Hu

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

94 Citations (Scopus)

Abstract

Magnetic CoFe2O4/graphene nanocomposites were prepared in this study by a simple hydrothermal process. The structures of these nanocomposites were investigated subsequently and the photocatalytic activities of the nanocomposites were then studied by degrading methylene blue dye. The results showed that the CoFe2O4 nanoparticles were loaded on the surface of the graphene sheets. It was also found that the photocatalytic degradation efficiency of the prepared nanocomposites improved remarkably compared with the neat CoFe2O4 salt. Significantly, these nanocomposites could be repeatedly used for several times without losing catalytic activity, indicating the nanocomposites had high photocatalytic stability. The study provides a new and effective approach to degrade dyestuff in wastewater.

Original language	English
Pages (from-to)	140-147
Number of pages	8
Journal	Applied Surface Science
Volume	351
DOIs	https://doi.org/10.1016/j.apsusc.2015.05.130
Publication status	Published - 1 Oct 2015

Keywords

CoFe O 2 4
Dye removal
Graphene
Photocatalysis degradation

ASJC Scopus subject areas

Surfaces, Coatings and Films

More information

10.1016/j.apsusc.2015.05.130

Cite this

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title = "Hydrothermal synthesis of magnetic CoFe2O4/graphene nanocomposites with improved photocatalytic activity",

abstract = "Magnetic CoFe2O4/graphene nanocomposites were prepared in this study by a simple hydrothermal process. The structures of these nanocomposites were investigated subsequently and the photocatalytic activities of the nanocomposites were then studied by degrading methylene blue dye. The results showed that the CoFe2O4 nanoparticles were loaded on the surface of the graphene sheets. It was also found that the photocatalytic degradation efficiency of the prepared nanocomposites improved remarkably compared with the neat CoFe2O4 salt. Significantly, these nanocomposites could be repeatedly used for several times without losing catalytic activity, indicating the nanocomposites had high photocatalytic stability. The study provides a new and effective approach to degrade dyestuff in wastewater.",

keywords = "CoFe O 2 4, Dye removal, Graphene, Photocatalysis degradation",

author = "Lu Gan and Songmin Shang and Yuen, {Chun Wah Marcus} and Jiang, {Shou-xiang Kinor} and Enling Hu",

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AU - Gan, Lu

AU - Shang, Songmin

AU - Yuen, Chun Wah Marcus

AU - Jiang, Shou-xiang Kinor

AU - Hu, Enling

PY - 2015/10/1

Y1 - 2015/10/1

N2 - Magnetic CoFe2O4/graphene nanocomposites were prepared in this study by a simple hydrothermal process. The structures of these nanocomposites were investigated subsequently and the photocatalytic activities of the nanocomposites were then studied by degrading methylene blue dye. The results showed that the CoFe2O4 nanoparticles were loaded on the surface of the graphene sheets. It was also found that the photocatalytic degradation efficiency of the prepared nanocomposites improved remarkably compared with the neat CoFe2O4 salt. Significantly, these nanocomposites could be repeatedly used for several times without losing catalytic activity, indicating the nanocomposites had high photocatalytic stability. The study provides a new and effective approach to degrade dyestuff in wastewater.

AB - Magnetic CoFe2O4/graphene nanocomposites were prepared in this study by a simple hydrothermal process. The structures of these nanocomposites were investigated subsequently and the photocatalytic activities of the nanocomposites were then studied by degrading methylene blue dye. The results showed that the CoFe2O4 nanoparticles were loaded on the surface of the graphene sheets. It was also found that the photocatalytic degradation efficiency of the prepared nanocomposites improved remarkably compared with the neat CoFe2O4 salt. Significantly, these nanocomposites could be repeatedly used for several times without losing catalytic activity, indicating the nanocomposites had high photocatalytic stability. The study provides a new and effective approach to degrade dyestuff in wastewater.

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