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Photocatalytic activity of MnWO4 powder in highly effective hydrogen generation from H2O and H2O2

  • Hai Yan He and Ping Chen
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 103 Issue 10

Abstract

Hydrogen gas is a clear energy resource. The hydrogen generation from the H2O/H2O2/MnWO4 system was studied for the first time. The MnWO4 powders were fabricated via an aqueous reaction method and followed by calcination at 400°C. The powders were characterized with X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectrometry. The efficiency of the hydrogen generation increased with increasing initial pH in the appropriate range, H2O2 proportion, MnWO4 proportion, and intensity of light resource. Calcining at 400°C for 1 h makes the MnWO4 powder more effective for H2 generation and more stable at higher initial pH. The MnWO4 catalyst showed a long-term stability for photocatalytic H2 generation. A mechanism of the hydrogen generation from the H2O/H2O2/MnWO4 system is suggested.

Keywords: Semiconductors; Chemical synthesis; Hydrogen generation; Photocatalysis
2 Correspondence address: Prof. Hai Yan He, Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of EducationShaanxi University of Science and TechnologyChina (710021), Tel.: 0086-15319453608, Fax: 0086-29-86168803, E-mail:

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Received: 2010-5-2
Accepted: 2012-1-30
Published Online: 2013-06-11
Published in Print: 2012-10-01

© 2012, Carl Hanser Verlag, Munich

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https://doi.org/10.3139/146.110752
Keywords for this article
Semiconductors; Chemical synthesis; Hydrogen generation; Photocatalysis

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems
  5. Thermodynamics of dilute binary solid solutions using the cluster variation method
  6. Thermal stability of coherent Pd/TiAl interfaces studied from first-principles calculations and experiments
  7. Electropulsing-induced phase transformations and their effects on the single point diamond turning of a tempered alloy AZ91
  8. Study of the mechanism of ductile-regime grinding of SiCp/Al composites using finite element simulation
  9. Investigations on laser welding of magnesium alloys
  10. Investigation of the surface of a laser-treated cast iron cylinder bore
  11. Solidification behaviour of an AA5754 Al alloy ingot cast with high impurity content
  12. Study of the structural evolution of crystalline zinc oxide films prepared by PLD
  13. Effects of sintering temperature on pore characterization and strength of porous cordierite–mullite ceramics by a pore-forming in-situ technique
  14. Sol–gel synthesis of Eu3+, Tb3+ co-doped Y2O3 scintillating nanopowders
  15. Morphological study of SiC coating developed on 2D carbon composites using MTS precursor in a hot-wall vertical reactor
  16. Self-assembling behavior and corrosion inhibition properties of TDPA films on differently structured surfaces of 2024 and 1060 aluminum alloys
  17. Photocatalytic activity of MnWO4 powder in highly effective hydrogen generation from H2O and H2O2
  18. Rheology and microstructure of polymer-modified asphalt nanocomposites
  19. Short Communications
  20. Microstructure and phase composition in a die cast Mg–Nd alloy containing Zn and Zr
  21. DGM News
  22. DGM News
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