Синтез гидроксиапатита, замещенного ионами РЗЭ элементов (Lа3+, Cе3+)

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Аннотация

Осуществлен синтез замещенных апатитов с варьированием содержания ионов La3+ и Ce3+. Методами РФА и ИК-спектроскопией доказано образование замещенного гидроксиапатита (La-ГА, Ce-ГА). Показано изменение параметров кристаллических решеток синтезированных фаз, что свидетельствует о замещении ионов Ca2+ на ионы РЗЭ в структуре гидроксиапатита. Методом АЭС с ИСП доказано присутствие ионов РЗЭ в твердых фазах. При изучении резорбции синтезированных образцов выявлено, что катион-замещенные гидроксиапатиты менее растворимы, чем не допированный ГА.

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Авторлар туралы

О. Голованова

Омский государственный университет им. Ф.М. Достоевского

Хат алмасуға жауапты Автор.
Email: golovanoa2000@mail.ru
Ресей, 644077, Омская область, г. Омск, пр. Мира, 55 а

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2. Fig. 1. Diffraction patterns of synthesized hydroxyapatite samples: fragment of the X-ray diffraction pattern of hydroxyapatite with the indication of the 2θ reflection angles and the corresponding hkl indices (a), with the addition of La3+ ions (б), with the addition of Ce3+ ions (в), line X-ray diffraction pattern of hydroxyapatite (г).

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3. Fig. 2. IR spectra of synthesized hydroxyapatite samples: with the addition of La3+ ions (a), with the addition of Ce3+ ions (б).

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4. Fig. 3. Micrographs of GA: without addition of REE ions (a); 2% La3+ (б); 5% La3+ (в), 2% Ce3+ (г); 5% Ce3+ (д).

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5. Fig. 4. Kinetic curves of dissolution of hydroxyapatite samples in acetate buffer: with the addition of La3+ ions (a); with the addition of Ce3+ ions (б).

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6. Fig. 5. Kinetic curves of dissolution of hydroxyapatite samples in HCl: with the addition of La3+ ions (a); with the addition of Ce3+ ions (б).

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