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

Autor(es)

Sousa, Ricardo Barbosa ; Dametto, Alessandra Cristina ; Sabio, Rafael Miguel ; de Carvalho, Renata Aquino ; Vieira, Ewerton Gomes ; do Amaral Oliveira, Andre Felipe ; Ribeiro, Lara Kelly ; Barud, Hernane S. ; Silva-Filho, Edson C.

• Tipo de documento: Artigo Científico
• Fonte: CERAMICS INTERNATIONAL; v. 46, n. 17, p. 6-pg., 2020-12-01.

Resumo

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 degrees 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. (AU)

• Processo FAPESP: 18/25512-8 - Plataforma para Cultura de Células Baseada em Biocelulose
• Beneficiário: Hernane da Silva Barud
• Modalidade de apoio: Auxílio à Pesquisa - Regular