Title of article
Investigation on the mechanism of the photoluminescence of MCM-41
Author/Authors
He، نويسنده , , Nongyue and Ge، نويسنده , , Shuxun and Yang، نويسنده , , Chun and Hu، نويسنده , , Chen and Gu، نويسنده , , Min، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
7
From page
1931
To page
1937
Abstract
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.
Keywords
A. Optical materials , A. Nanostructures , D. Optical properties , D. Defects , D. Surface properties
Journal title
Materials Research Bulletin
Serial Year
2004
Journal title
Materials Research Bulletin
Record number
2096896
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