Investigation on the mechanism of the photoluminescence of MCM-41

Pure siliceous MCM-41 sample was synthesized in ethylenediamine (EDA) medium. MCM-41 sample calcined at 813 K showed the most strong photoluminescent (PL) effect, while those calcined at 1073 K and 1323 K only showed weak photoluminescence. The intensity of photoluminescence decreased as the calcine...

Full description

Saved in:
Bibliographic Details
Published inMaterials research bulletin Vol. 39; no. 12; pp. 1931 - 1937
Main Authors He, Nongyue, Ge, Shuxun, Yang, Chun, Hu, Chen, Gu, Min
Format Journal Article
LanguageEnglish
Published United States Elsevier Ltd 04.10.2004
Subjects
A. Nanostructures
A. Optical materials
CRYSTAL DEFECTS
CRYSTALS
D. Defects
D. Optical properties
D. Surface properties
MATERIALS SCIENCE
NANOSTRUCTURES
NUCLEAR MAGNETIC RESONANCE
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
SILICATES
SPECTROSCOPY
SURFACE PROPERTIES
A. Nanostructures
D. Surface properties
D. Defects
A. Optical materials
D. Optical properties
Online AccessGet full text

Cover

More Information
Summary:Pure siliceous MCM-41 sample was synthesized in ethylenediamine (EDA) medium. MCM-41 sample calcined at 813 K showed the most strong photoluminescent (PL) effect, while those calcined at 1073 K and 1323 K only showed weak photoluminescence. The intensity of photoluminescence decreased as the calcined temperature increased. By nuclear magnetic resonance (NMR) spectroscopy and infrared (IR) investigation, it was demonstrated that both the Al-depleted defect sites and silanol contents were responsible for the strong PL effect of the investigated MCM-41 samples. It was also suggested that the mesoporous channel structure of MCM-41 influences the investigated PL effect.
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2004.05.018