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Ni2O3-modified TiO2 – xNx as efficientvisible-light photocatalysts

  • Guiqiang Wang , Yinmin Li and Shuping Zhuo
Published/Copyright: May 15, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 101 Issue 2

Abstract

Ni2O3-modified TiO2 – xNx visible-light photocatalysts have been prepared by the sol-gel method followed by calcining at 450 °C. The photocatalysts were characterized using scanning electron microscopy, thermogravimetry-differential thermal analysis, X-ray diffraction, Fourier transform infrared and X-ray photoelectron spectroscopy. The visible-light photocatalytic activity of the samples was evaluated by decomposition of methylene blue in air under visible-light irradiation (λ > 420 nm). Results revealed that the Ni2O3-modified TiO2 – xNx samples exhibited irregular particle shapes. The crystal phase of Ni2O3-modified TiO2 – xNx samples was anatase. Compared with pure TiO2, the absorption of the Ni2O3-modified TiO2 – xNx samples extends significantly into the visible regions due to the doped N atom in the interstitial sites of the TiO2 lattice. The visible-light photocatalytic activity of Ni2O3-modified TiO2 – xNx samples was improved greatly since the loaded Ni2O3 can facilitate charge transfer.

Keywords: Visible-light photocatalysts; Sol-gel method; X-ray photoelectron spectroscopy
∗ Correspondence address, Professor Guiqiang Wang The College of Chemical Engineering Shandong University of Technology Zibo 255049, China Tel.: +86 0533 2781 203 Fax: +86 0533 2781 664 E-mail:

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Received: 2008-8-11
Accepted: 2009-4-14
Published Online: 2013-05-15
Published in Print: 2010-02-01

© 2010, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110272
Keywords for this article
Visible-light photocatalysts; Sol-gel method; X-ray photoelectron spectroscopy

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Materials for Information Technology
  5. Feature
  6. Advanced high-k/metal gate stack progress and challenges – a materials and process integration perspective
  7. Spintronics in metallic superconductor/ferromagnet hybrid structures
  8. Graphene metrology and devices
  9. The role of defects in resistively switching chalcogenides
  10. Materials in optical data storage
  11. Scaling effects on microstructure and reliability for Cu interconnects
  12. Effects of e-beam curing on glass structureand mechanical properties of nanoporous organosilicate thin films
  13. Printing materials for electronic devices
  14. Basic
  15. Characterisation of lead – calcium alloys ageing in anisothermal conditions by calorimetric, resistance and hardness in-situ measurements
  16. Thermodynamic predictions of Mg – Al – Ca alloy compositions amenable to semi-solid forming
  17. Capillary equilibrium in a semi-solid Al – Cu slurry
  18. A comparative study of room-temperature creep in lead-free tin-based solder alloys
  19. Modeling creep in a thick composite cylinder subjected to internal and external pressures
  20. Applied
  21. The oxidation behaviour of the 9 % Cr steel P92in CO2- and H2O-rich gases relevant to oxyfuel environments
  22. Effect of thermal and mechanical treatments on the hot working response of Mg-3Sn-1Ca alloy
  23. Structure and mechanical properties of an AlCr6Fe2Ti1 alloy produced by rapid solidification powder metallurgy method
  24. Ni2O3-modified TiO2 – xNx as efficientvisible-light photocatalysts
  25. Dependence of optical, structural and electrical properties of ZnxCd1–xS thin films prepared by co-evaporation on the composition for x = 0 – 1
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