Cerium-doped calcium phosphates precipitated on bacterial cellulose platform by mineralization

• Published in: Ceramics international Vol. 46; no. 17; pp. 26985 - 26990
• Main Authors: Sousa, Ricardo Barbosa, Dametto, Alessandra Cristina, Sábio, Rafael Miguel, de Carvalho, Renata Aquino, Vieira, Ewerton Gomes, Oliveira, André Felipe do Amaral, Ribeiro, Lara Kelly, Barud, Hernane S., Silva-Filho, Edson C.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-12-2020
• Subjects: Bioceramics; Lanthanide ions; Nanocomposite; Polysaccharide; Bioceramics; Nanocomposite; Polysaccharide; Lanthanide ions
• ISSN: 0272-8842; 1873-3956
• DOI: 10.1016/j.ceramint.2020.07.175

Bacterial cellulose (BC) membranes biosynthesized by Komagataeibacter rhaeticus AF1 strain were used as a platform for precipitating cerium-doped calcium phosphates (Ce:CaP), which were synthetized by successive soaking of BC membranes in solutions containing Ca2+, PO43− and Ce3+ precursor ions. After obtaining the as-prepared composites, BC-Ce:CaP was submitted to a thermal treatment at 600 °C for 3 h, and Ce:CaP was characterized by scanning electronic microscopy (SEM), energy dispersive X-ray spectrometry (EDX), thermogravimetric analysis (TG), derivative thermogravimetric analysis (DTG) and X-ray diffraction (XRD). Ce:CaP presented hydroxyapatite, chlorapatite and buchwaldite (sodium calcium phosphate) phases and revealed a trabecular structure composed per nanowires with interconnected pores. Furthermore, BC-Ce:CaP and Ce:CaP show cell viability and has been suggested for use as a mineral scaffold.