Inorganic Materials: Synthesis and Processing

Graphene-supported nickel ferrite: A magnetically separable photocatalyst with high activity under visible light

  1. Yongsheng Fu1,
  2. Haiqun Chen2,
  3. Xiaoqiang Sun2,
  4. Xin Wang3,*

Article first published online: 22 DEC 2011

DOI: 10.1002/aic.13716

Issue

AIChE Journal

AIChE Journal

Volume 58, Issue 11, pages 3298–3305, November 2012

Additional Information

How to Cite

Fu, Y., Chen, H., Sun, X. and Wang, X. (2012), Graphene-supported nickel ferrite: A magnetically separable photocatalyst with high activity under visible light. AIChE J., 58: 3298–3305. doi: 10.1002/aic.13716

Author Information

  1. 1

    Key Laboratory of Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing 210094, China, and Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China

  2. 2

    Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China

  3. 3

    Key Laboratory of Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing 210094, China, and Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, Nanjing University of Science and Technology, Nanjing 210094, China

*Key Laboratory of Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing 210094, China, and Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, China

Publication History

  1. Issue published online: 5 OCT 2012
  2. Article first published online: 22 DEC 2011
  3. Accepted manuscript online: 8 DEC 2011 11:05AM EST
  4. Manuscript Revised: 11 NOV 2011
  5. Manuscript Received: 11 SEP 2011

Funded by

  • National Natural Science Foundation of China. Grant Number: 21171094
  • Priority Academic Program Development of Jiangsu Higher Education Institutions
  • NUST Research Funding. Grant Number: 2011PYXM03
  • Dept. of Education of Jiangsu Province. Grant Number: CXZZ11_0245

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

View Full Article with Supporting Information (HTML) Get PDF (567K)

Keywords:

  • NiFe2O4-graphene;
  • photocatalyst;
  • magnetic separation;
  • visible light irradiation;
  • radicals' oxidation reaction

Abstract

A straightforward strategy is designed for the fabrication of a magnetically separable NiFe2O4-graphene photocatalyst with different graphene content. It is very interesting that the combination of NiFe2O4 nanoparticles with graphene sheets results in a dramatic conversion of the inert NiFe2O4 into a highly active catalyst for the degradation of methylene blue (MB) under visible light irradiation. The significant enhancement in photoactivity under visible light irradiation can be ascribed to the reduction of GO, because the photogenerated electrons of NiFe2O4 can transfer easily from the conduction band to the reduced GO, effectively preventing a direct recombination of electrons and holes. The results of the kinetic study indicated that the rate-determining stage is the adsorption process of MB molecules. NiFe2O4 nanoparticles themselves have a strong magnetic property, which can be used for magnetic separation in a suspension system, and, therefore, the introduction of additional magnetic supports is no longer necessary. © 2011 American Institute of Chemical Engineers AIChE J, 2012

View Full Article with Supporting Information (HTML) Get PDF (567K)