Preparation of Chinese mystery snail shells derived hydroxyapatite with different morphology using condensed phosphate sources

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• 作者：Huan Zhou^a ; ^b ; ^{huanzhou@cczu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Mengmeng Yang^a ; ^c ; Mingjie Zhang^a ; ^c ; Saisai Hou^a ; ^d ; Shiqin Kong^a ; ^d ; Lei Yang^b ; ^e ; Linhong Deng^a ; ^{dlh@cczu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Hydroxyapatite ; Condensed phosphate ; Hydrothermal ; Mesoporous ; Snail shells
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：15 November 2016
• 年：2016
• 卷：42
• 期：15
• 页码：16671-16676
• 全文大小：2201 K

文摘

Chinese mystery snail is a popular aquatic food in China, resulting in tonnes of shells as waste every year. In present work, these shells were recycled as calcium source to prepare HA. Initially, shells were found to decompose within 860 °C to porous CaO. The calcined shells were then hydrothermally utilized to synthesize HA with the help of different phosphate sources (PO₄³⁻, P₂O₇⁴⁻, P₃O₁₀⁵⁻, and P₆O₁₈⁶⁻). Under hydrothermal processing, condensed phosphate ions could be hydrolyzed into PO₄³⁻ to react with Ca²⁺. The prepared HA was subsequently characterized by XRD, FTIR, SEM, EDX and TEM. It was found condensed phosphates could result in significant changes to the morphology of HA in comparison to orthophosphate. In particular, P₆O₁₈⁶⁻ related HA appeared to be mesoporous. The cytocompatibility of different phosphate source related HA was also investigated.