Preparation and characterization of cadmium–calcium hydroxyapatite solid solution particles

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• 作者：A. Yasukawa ; M. Higashijima ; K. Kandori and T. Ishikawa
• 刊名：Colloids and Surfaces A ; Physicochemical and Engineering Aspects
• 出版年：2005
• 期刊代码：22_09277757
• 类别：ch
• 出版时间：2005
• 卷：268
• 期：1-3
• 页码：111-117
• 文件大小：310 K

摘要

Cadmium–calcium hydroxyapatite (CdCaHap) solid solutions with different atomic ratios Cd/(Cd + Ca) (X_Cd) of 0–1 were synthesized by a wet method and characterized by various means. X_Cd of all the obtained solid solution particles was slightly larger than Cd/(Cd + Ca) atomic ratio in the starting solutions ([X_Cd]), that is, Cd²⁺ ions were a little more easily incorporated into hydroxyapatite (Hap) crystals compared to Ca²⁺ ions. With increasing Cd²⁺ content, the unit cell dimensions a and c decreased, the particles became large spherical agglomerates, and the specific surface area decreased. The amount of CO₂ irreversibly adsorbed on CdCaHap was lower on average than those on the other Hap particles.