Registration Number
0220U103016,
0117U004522
, R & D reports
Title
Development of fundamental principles of creating selective processes of photocatalytic and photoelectrocatalytic synthesis of substances and new fluorescent materials based on semiconductor and metal-semiconductor nanostructures
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Head
Kuchmii Stepan Ya.,
Registration Date
13-07-2020
Organization
L. V. Pisarzhevskii Institute Of Physical Chemistry of The National Academy of Sciences of Ukraine
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Photoactive materials based on layered semiconductors (graphite carbon nitride, potassium niobates, molybdenum sulfide) and nanocomposites of different composition based on them were obtained, their structural, spectral and photocatalytic properties were studied. With the participation of synthesized nanomaterials, the regularities of a number of photocatalytic reactions were established: obtaining molecular hydrogen from aqueous solutions of electron-donating substrates of different nature (hydrazine and its derivatives, lower alcohols, organic acids), gas-phase partial oxidation of alcohols, photoelectrocatalytic reduction of carbon dioxide, etc.
Nanostructures based on particles of exfoliated carbon nitride and gold nanocrystals were obtained, in which the position of the maximum of the surface plasmon resonance band in the relatively wide range of 520–610 nm can be adjusted by changing the synthesis conditions without strongly influencing the morphology of Au nanocrystals.
A new method for the synthesis and stabilization of water-soluble and luminescent ultra-small quantum dots of cadmium chalcogenides - individual and doped with copper and silver, a comprehensive study of their structural, spectral and photoluminescent properties. It is shown that a wide emission band in such nanoobjects can be described by a model of a self-captured exciton, which assumes the participation of nanocrystal phonons in the radiative relaxation of electron excitation.
Product Description
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Hranchak Vasyl M.
Grodzyuk Galyna Ya
Korzhak Hanna V
Ovcharov Mykhailo L
Raievska Oleksandra Ye.
Shvalahin Vitalii V.
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2020-10-01
