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Photoluminescent (PL) investigation of mesoporous molecular sieve materials

  • Nong Yue He*
  • , Chun Yang
  • , Liang Sheng Liao
  • , Qing Dai
  • , Ping Li
  • , C. Xu
  • , Zu Hong Lu
  • , Chun Wei Yuan
  • *Corresponding author for this work
  • Southeast University, Nanjing

Research output: Contribution to journalArticlepeer-review

Abstract

MCM-41 mesoporous molecular sieve materials with nanometer-sized pores show a very strong photoluminescent (PL) effect when excited by the 441. 6 nm line of a He-Cd laser or by UV at 250 nm. Al-depleted defect sites are responsible for the strong PL-laser effect but not for the PL-UV effect. The 467 nm band in PL-UV spectra may be caused by oxygen-vacancy defect. Incorporation of aluminum enhances the PL effect. The porous channel structures of molecular sieves are another factor influencing the investigated PL effect.

Original languageEnglish
Pages (from-to)293-300
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume125
StatePublished - 1999
Externally publishedYes

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