The effect of crystal structure of TiO2 nanotubes on the formation of calcium phosphate coatings during biomimetic deposition
Source abstract
Abstract
Abstract The crystallization process of bioactive calcium phosphate (CaP) species via biomimetic deposition onto anodic TiO 2 nanotubes is investigated. The porous surface of nanostructured TiO 2 provides an ideal substrate for CaP crystallization. The compositions of CaP coatings are studied using X-ray absorption near-edge structures (XANES) at the Ca K-edge. Using detection modes with different probing depths, both the surface of the CaP coating and the CaP-TiO 2 interface are simultaneously analyzed. Calcium phosphate (CaP) species, such as hydroxyapatite (HAp), octacalcium phosphate (Ca 8 (HPO 4 ) 2 (PO 4 ) 4 ·5H 2 O, OCP), brushite (CaHPO 4 ·2H 2 O, DCPD), and amorphous calcium phosphate (ACP), are found in the CaP coatings. TiO 2 nanotubes of amorphous and anatase phases are comparatively studied to determine their effect on the efficiency of CaP formation and the phase transformation among CaP species in prolonged deposition time. It is found the composition of CaP coating has a strong dependency on the crystal structure of TiO 2 substrate and the kinetics (deposition time).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Bone Tissue Engineering Materials · Dental materials and restorations · Calcium Carbonate Crystallization and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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