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The Stability and regeneration mechanism of new visible-light responsive photocatalyst Bi20TiO32

  • Xu Hui Sun
  • , Tao Wang
  • , Lin Sun
  • , Jun Ma
  • Northeast Electric Power University
  • College of Chemistry

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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 Bi 20TiO32 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.

Original languageEnglish
Title of host publicationNew and Advanced Materials
Pages870-873
Number of pages4
DOIs
StatePublished - 2011
Event2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011 - Guilin, China
Duration: 9 Apr 201111 Apr 2011

Publication series

NameAdvanced Materials Research
Volume197-198
ISSN (Print)1022-6680

Conference

Conference2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011
Country/TerritoryChina
CityGuilin
Period9/04/1111/04/11

Keywords

  • BiTiO
  • Deactivation
  • Photocatalyst
  • Regeneration
  • Stability

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