Paper Title:
The Stability and Regeneration Mechanism of New Visible-Light Responsive Photocatalyst Bi20TiO32
  Abstract

This paper studied the stability and regeneration mechanism of photocatalyst Bi20TiO32. There is no change in the XRD of the catalyst after reaction, which indicates that photocatalyst Bi20TiO32 has stable structure. The comparison of XPS between used and fresh catalyst, shows that the major cause of the deactivation is the competitive adsorption of intermediates onto the surface active sites of the catalyst. Simple cleaning by deionized water, light irradiation, acid or base purging can not refresh the catalyst. However, ethanol with ultrasonic vibration can recover its activity well, as further demonstrates that the deactivation is because of that active sites are occupied by organic intermediates. Calcination is an effective way to recover the catalyst activity.

  Info
Periodical
Advanced Materials Research (Volumes 197-198)
Edited by
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
Pages
870-873
DOI
10.4028/www.scientific.net/AMR.197-198.870
Citation
X. H. Sun, T. Wang, L. Sun, J. Ma, "The Stability and Regeneration Mechanism of New Visible-Light Responsive Photocatalyst Bi20TiO32", Advanced Materials Research, Vols. 197-198, pp. 870-873, 2011
Online since
February 2011
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Price
$32.00
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