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Registration Number

0220U102054, 0119U103599 , R & D reports

Title

Creation of novel composite materials on the base of nanostructured metal foams, modified by porous coordination polymers, for detection and remediation of halogen-containing organic pollutants

Head

Lytvynenko Anton S., Кандидат хімічних наук

Registration Date

04-03-2020

Organization

L. V. Pisarzhevskii Institute Of Physical Chemistry of The National Academy of Sciences of Ukraine

Description

The influence of the conditions of silver electrodeposition from electrolytes with different compositions on the structure of nanoporous silver foams (AgNF) has been studied, modification of the AgNFs by particles of porous coordination polymers HKUST-1, MOF-5, aluminum fumarate, MIL-101(Cr) has been performed. The structure of the materials has been studied by optical and scanning electron microscopy, X-ray diffraction and UV-vis spectroscopy. It has been shown that AgNFs are hierarchical structures with two levels of hierarchy – micro- and nanosized ones. The only parameter influencing the sizes of AgNF structural elements is Ag+ concentration. All obtained AgNFs exhibit superior electrocatalytic activity in bromobenzene reduction compared to bulk Ag by the criterion of the process potential (shift up to 350 mV). The impurities in the electrolyte significantly improve the foam stability and reproducibility of its characteristics. Modification of AgNF by MIL-101(Cr) particles leads to the shift of the potential of CF3CHClBr reduction toward less negative values compared to the unmodified foam.

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Mishura Andrii M.