The mechanism of formation of the ultra disperse iron oxide minerals on steel surface in presence of Cu(II), Ag(I), Au(III), Pt (IV), Pd(II)

• Дата: 2010
• Автор: Lavrynenko, O.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут проблем матеріалознавства ім. І.М. Францевича НАН України 2010
• Назва видання: Наноструктурное материаловедение
• Теми: Наночастицы, нанокластеры, нульмерные объекты
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/62724
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: The mechanism of formation of the ultra disperse iron oxide minerals on steel surface in presence of Cu(II), Ag(I), Au(III), Pt (IV), Pd(II) / O. Lavrynenko // Наноструктурное материаловедение. — 2010. — № 3. — С. 3-13. — Бібліогр.: 39 назв. — англ.

Process of formation of ultra disperse iron oxide minerals on steel surface by its contacts with air oxygen and dispersion medium containing ions of cuprum, argentums, aurum, platinum and palladium was studied. The formation of phase’s hydroxysulphate Green Rust, magnetite and lepidocrocite on steel surface by concentrations of electropositive metals 1–10 mg/dm³ was shown. Mechanism of phase formation occurs by two stages: adsorption of ions from dispersion medium on Green Rust surface with partly reduction of ions and oxidation of GR to magnetite or lepidocrocite and reduction of the rest metal ions on magnetite surface. Interacting iron oxide phases with electropositive ions add colloidal stability to composite particles.