Effect of dopant loading on the structural features of silver-doped hydroxyapatite obtained by mechanochemical method
Source abstract
Abstract
Abstract Silver-doped hydroxyapatite (Ag-doped HA) nanopowders were synthesized using calcium hydroxide (Ca(OH) 2 ), phosphorus pentoxide (P 2 O 5 ) and silver nitrate (AgNO 3 ) precursors, through a one-pot mechanochemical process. The influence of dopant content on the phase formation, structural properties and morphological features was examined. The results showed that the as-prepared powders were single-phase hexagonal HA in the absence of the dopant. With the addition of the dopant, a similar phase structure was achieved, however some changes were observed with regards to the peak position and broadening. With the increase of Ag substitution, some alterations in the structural features of the milled powders were observed, where the crystallite size, lattice strain and crystallinity degree were between 25 ± 18 and 33 ± 14 nm, between 0.486 ± 0.0.161 and 0.824 ± 0.477, and between ~ 83 and 93%, respectively. From the Fourier transformed infrared (FTIR) spectroscopy spectra, the location of the CO 3 -derived bands revealed that the replacement of PO 4 3− by CO 3 2− (B-type) was dominant in the Ag-doped HA nanopowders. This facile solid-state method is an alternative process for the preparation of bioceramic nanopowders.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Bone Tissue Engineering Materials · Calcium Carbonate Crystallization and Inhibition · Dental materials and restorations
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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