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20 June 2024 Photoluminescence of graphitic carbon nitride (g-C3N4) as a probe for gas detection
Spyros Kokkotos, Evangelia Vasilaki, Maria Vamvakaki, Argyro Klini
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Proceedings Volume 12999, Optical Sensing and Detection VIII; 1299914 (2024) https://doi.org/10.1117/12.3022377
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
The sensing behavior of graphitic carbon nitride (g-C3N4) allotropes (fabricated with thermal polymerization of urea or melamine) by monitoring their laser induced room temperature photoluminescence (PL) emission, is demonstrated. Their sensing behavior has been investigated at oxygen atmosphere, upon optical excitation with a laser source (248 and 355 nm) in wavelength for different energy densities. The observed variability of PL features of g-C3N4, such as spectral intensity and wavelength, offers a systematic way to monitor the environmental changes in a reliable manner, opening the path for exploiting g-C3N4, as optical sensing material.
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Spyros Kokkotos, Evangelia Vasilaki, Maria Vamvakaki, and Argyro Klini "Photoluminescence of graphitic carbon nitride (g-C3N4) as a probe for gas detection", Proc. SPIE 12999, Optical Sensing and Detection VIII, 1299914 (20 June 2024); https://doi.org/10.1117/12.3022377
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KEYWORDS
Carbon
Photoluminescence
FT-IR spectroscopy
Oxygen
Photocatalysis
Polymerization
Scanning electron microscopy
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