Synthesis, Electronic State, and Particle Size Stabilization of Nanoparticulate [Co(OH) 2(H 3O) δ + ] δ+ Научная публикация
Журнал |
Inorganic Materials
ISSN: 0020-1685 , E-ISSN: 1608-3172 |
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Вых. Данные | Год: 2009, Том: 45, Номер: 12, Страницы: 1355-1361 Страниц : 7 DOI: 10.1134/S0020168509120097 | ||
Ключевые слова | Mother Liquor; Narrow Particle Size Distribution; Positive Surface Charge; Nanoparticulate Cobalt; Cobalt Hydroxide | ||
Авторы |
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Организации |
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Информация о финансировании (1)
1 | Российский фонд фундаментальных исследований | 06-03-33107 |
Реферат:
We have synthesized nanoparticulate cobalt(II) hydroxide containing Co2+ in tetrahedral oxygen coordination (Co Td 2+), atypical of such systems: nano- [Co(OH)2(H3O) δ +]δ+. The (Co Td 2+) coordination in the hydroxide is inferred from its electronic diffuse reflectance spectrum, which shows a multiplet of strong absorption bands at 14500, 15000, and 16000 cm−1 (4 A 2(F)-4 T 1(P) transition). Nanoparticulate cobalt(II) hydroxide forms in a weakly acidic medium under essentially nonequilibrium conditions due to supersaturation (by three to four orders of magnitude) with the starting reagents (CoCl2 and LiOH) at the instant of the formation of the poorly soluble phase Co(OH)2. Presumably, colloidal particles of nanoparticulate cobalt(II) hydroxide in a weakly acidic aqueous medium have a positive surface charge, compensated by a counter-ion (Cl−) layer: nano-[Co(OH)2(H3O) δ +]δ+ · δCl−. The XRD patterns of pastes (gels) containing this hydroxide show three broad-ened lines with d = 5.31 (2θ = 16.7°), 2.77 (2θ = 32.3°), and 2.32 Å (2θ = 38.8°). According to small-angle X-ray scattering data, nano-[Co(OH)2(H3O) δ +]δ+ has a narrow particle size distribution (1.0–2.0 nm). Synthesis and storage conditions are identified which ensure stabilization of the electronic state and particle size of nano-[Co(OH)2(H3O) δ +]δ+ for a long time
Библиографическая ссылка:
Krivoruchko O.P.
, Larina T.V.
, Anufrienko V.F.
, Molina I.Y.
, Paukshtis E.A.
Synthesis, Electronic State, and Particle Size Stabilization of Nanoparticulate [Co(OH) 2(H 3O) δ + ] δ+
Inorganic Materials. 2009. V.45. N12. P.1355-1361. DOI: 10.1134/S0020168509120097 WOS Scopus РИНЦ
Synthesis, Electronic State, and Particle Size Stabilization of Nanoparticulate [Co(OH) 2(H 3O) δ + ] δ+
Inorganic Materials. 2009. V.45. N12. P.1355-1361. DOI: 10.1134/S0020168509120097 WOS Scopus РИНЦ
Оригинальная:
Криворучко О.П.
, Ларина Т.В.
, Ануфриенко В.Ф.
, Молина И.Ю.
, Паукштис Е.А.
Синтез, электронное состояние и условия стабилизации размеров частиц нанодисперсного гидроксида [Co(OH)2(H3O)δ+]δ+
Неорганические материалы. 2009. Т.45. №12. С.1451-1457. РИНЦ
Синтез, электронное состояние и условия стабилизации размеров частиц нанодисперсного гидроксида [Co(OH)2(H3O)δ+]δ+
Неорганические материалы. 2009. Т.45. №12. С.1451-1457. РИНЦ
Даты:
Поступила в редакцию: | 30 окт. 2008 г. |
Опубликована в печати: | 1 дек. 2009 г. |
Опубликована online: | 5 дек. 2009 г. |
Идентификаторы БД:
Web of science | WOS:000272464400009 |
Scopus | 2-s2.0-73849130957 |
РИНЦ | 15301794 |
Chemical Abstracts | 2009:1522017 |
Chemical Abstracts (print) | 153:75662 |
OpenAlex | W2040127508 |