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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Photocatalytic Hydrogen Generation from Water-methanol Mixtures Using Nanocrystalline ZnFe2O4 under Visible Light Irradiation

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Title
Photocatalytic Hydrogen Generation from Water-methanol Mixtures Using Nanocrystalline ZnFe2O4 under Visible Light Irradiation
Other Titles
Photocatalytic Hydrogen Generation from Water-methanol Mixtures Using Nanocrystalline ZnFe2O4 under Visible Light Irradiation
Author
Borse, P. H.Jang, J. S.Hong, S. J.Lee, Jae SungJung, J. H.Hong, T. E.Ahn, C. W.Jeong, E. D.Hong, K. S.Yoon, J. H.Kim, H. G.
Keywords
Zinc ferrites; Nano-particles; Polymerized complex method; Visible light
Issue Date
2009-10
Publisher
KOREAN PHYSICAL SOC
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.55, no.4, pp.1472 - 1477
Abstract
A spinel crystal structure of ferrite containing zinc (ZnFe2O4) was synthesized by using the polymer complex method. A pure phase ZnFe2O4 was obtained at a relatively lower temperature of 900 degrees C. The as-synthesized nanoparticles are agglomerates of crystals with an average size of similar to 50 urn, as estimated from the X-ray diffraction analysis. The band gap of the n-type semiconducting metal oxide, as determined by using an ultraviolet-visible diffuse reflectance spectrometer was found to be 1.90 eV (653 nm). The photocatalytic activity of ZnFe2O4 was investigated by using the photoreduction of water under visible light (>= 420 nm), which was found to be much higher than that of the well-known TiO2-x,N-x photocatalyst. This superior performance is attributed to the larger surface area, the uniform and well-dispersed deposition of the Pt co-catalyst over the surface, and the small band gap of the chemically-prepared ferrite photocatalyst
URI
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DOI
10.3938/jkps.55.1472
ISSN
0374-4884
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ECHE_Journal Papers
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