Formation of porous metals upon radiation chemical reduction of Cd2+ and  Pb2+ ions in aqueous solution in the presence of formate ions

Авторы: Ershov B.G., Bykov G.L.
Журнал: Radiation Physics and Chemistry
Том: 201
Год издания: 2022
Издательство: Elsevier
Местоположение издательства: United States
Номер статьи: 110460
DOI: 10.1016/j.radphyschem.2022.110460
Аннотация: Metal precipitates with a density of 1.17 and 1.49 g cm−3, porosity of 86.5 and 86.9%, and a large surface area were obtained by accelerated electron irradiation of aqueous solutions of cadmium and lead salts containing НСОО− ions. The process of precipitation and physicochemical properties of the precipitates were studied. The precipitates were porous and included nanoparticles with a crystal structure characteristic of metals. The average particle size of the porous sediment, determined by the sedimentation method, was 40–60 μm for cadmium and 100–120 μm for lead. The radiation chemical yield of cadmium atoms upon irradiation of an aqueous solution containing 0.1 mol L−1 CdSO4 and 1 mol L−1 HCOONa was 0.33 ± 0.03 μmol J−1, while that of lead atoms resulting from irradiation of a solution containing 0.1 mol L−1 Pb(CH3COO)2 and 1 mol L−1 HCOONa was 0.39 ± 0.05 μmol J−1. The developed method can be promising for obtaining pure and porous metal precipitates from aqueous solutions of metal salts.
Добавил в систему: Быков Геннадий Леонидович

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