Paper Title:
The Relationship Between the TiO2 Photocatalyst Deactivation, Regeneration and the Concentration of the Surface Adsorbed SO42-
  Abstract

The photolysis ability and adsorption ability of TiO2 was detected and measured using acetaldehyde as a probe. The quantitative relationship between the TiO2 deactivation and the concentration of the surface adsorbed SO42- was obtained by intentional controls of the concentrations of the surface adsorbed SO42-. When the concentration of the surface adsorbed SO42- reached 2.0 wt%, the photolysis ability of the TiO2 photocatalyst decreased by 50%, and when the concentration was 2.9 wt%, the TiO2 adsorption ability decreased by 50%. 90% of the absorbed SO42- can be removed after the samples have been washed by overflowing water for 2 hours at a rate of 2 L.min-1 and the photocatalytic activity can be regenerated. This work will help to predict the lifetime of TiO2 photocatalyst in actual applications as well as to understand its regenerations of the photocatalytic capability.

  Info
Periodical
Advanced Materials Research (Volumes 306-307)
Chapter
Chapter 10: Environmental and Green Materials
Edited by
Shiquan Liu and Min Zuo
Pages
1557-1562
DOI
10.4028/www.scientific.net/AMR.306-307.1557
Citation
Y. Huang, Z. H. Zhou, Y. P. Wu, Y. C. Meng, S. Shen, "The Relationship Between the TiO2 Photocatalyst Deactivation, Regeneration and the Concentration of the Surface Adsorbed SO42-", Advanced Materials Research, Vols. 306-307, pp. 1557-1562, 2011
Online since
August 2011
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$32.00
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