Photocatalytic Evolution of Hydrogen from Alcohol–Aqueous Solutions using Nanocrystalline Carbon Nitride Modified with Magnesium Chloride Under the Visible Light Irradiation

Samples of nanocrystalline graphite-like carbon nitride (CGCN) modified with magnesium chloride have been obtained. The synthesized Mg-CGCN samples have been characterized by UV and IR spectroscopies, X-ray diffraction, energy dispersive X-ray analysis, and scanning electron microscopy. It is found...

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Bibliographic Details
Published in:Theoretical and experimental chemistry 2022-07, Vol.58 (3), p.198-204
Main Authors: Grodzyuk, G. Ya, Koryakina, K. V., Shvalagin, V. V., Korzhak, G. V., Kuchmiy, S. Ya
Format: Article
Language:English
Subjects:
Aqueous solutions
Banded structure
Carbon
Carbon nitride
Catalytic activity
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Energy dispersive X ray analysis
Ethanol
Hydrogen
Hydrogen evolution
Light irradiation
Magnesium chloride
Magnesium compounds
Nanocrystals
Nitrides
Photocatalysis
X ray analysis
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Summary:Samples of nanocrystalline graphite-like carbon nitride (CGCN) modified with magnesium chloride have been obtained. The synthesized Mg-CGCN samples have been characterized by UV and IR spectroscopies, X-ray diffraction, energy dispersive X-ray analysis, and scanning electron microscopy. It is found that Mg-CGCN exhibits 60% higher photocatalytic activity in the reaction of hydrogen evolution from aqueous ethanol solutions under visible light than undoped CGCN. This may be related to a change in electrophysical characteristics (potentials of allowed bands) resulting from the incorporation of Mg 2+ ions into the CGCN structure, improved dissociation of photogenerated charges, and inhibition of their recombination.
ISSN:0040-5760
1573-935X
DOI:10.1007/s11237-022-09736-3