Effect of fluorides on bioactivity of titania nanotubes in SBF solution – by EIS studies

摘要: Purpose: The influence of fluorides concentration in anodizing electrolyte on deposition calcium phosphates Ca-O-P titania nanotubes immersed simulated body fluid (SBF) has been examined. Design/methodology/approach: electrochemical impedance spectroscopy (EIS) was used to monitor the process titanium foils covered with formed by 1 M H3PO4 various amounts ranging from 0.2 wt% 0.4 wt%. changes characteristics combined results SEM and EDS analyses were evaluate bioactivity SBF find out relation between morphology deposits electrolyte. Findings: obtained confirmed that strongly favour (HAp) during first 24 hours. However, behavior electrolytes fluoride content differ afterwards when longer solution. Particularly, contrary other samples, amount H3PO4+0.30% wt. HF decreases significantly about 72 hours after immersing these observations are recorded both SEM/EDS examination XPS results. corresponding parameters noticed. Practical implications: Development method cover implant materials nanoporous anodic layer, enriched fluorides- ions highly supporting bioactivity, enables new applications implantology biosensing. Originality/value: Bioactivity is desirable property materials. phenomena observed immersion solution Electrochemical Impedance Spectroscopy related fluorine nanotubes. explanation this its consequence proposed.