Peroxide-doped apatites: Preparation and effect of synthesis parameters - Archive ouverte HAL Access content directly
Journal Articles Powder Technology Year : 2014

Peroxide-doped apatites: Preparation and effect of synthesis parameters

Abstract

This contribution focused on the preparation of peroxide-doped calciumphosphate apatites--in viewof potential uses as bioactive bioceramics with antimicrobial functions, and on their main physico-chemical characteristics. Two synthesis routeswere investigated. First, the hydrolysis of β-TCP in the presence ofH2O2 was followed. However, only elevated concentrations inH2O2 in themediumor temperatures around 150 °C allowed us to reach the complete β-TCP-to-apatite hydrolysis process, and the obtained samples exhibited a high crystallinity state with no non-apatitic chemical environments. The second protocol tested consisted in the direct apatite precipitation in the presence of H2O2 in themedium (at room temperature). This protocol led to single-phased nanocrystalline apatites, and our data indicate that part of the apatitic OH− ions were substituted by oxygenated species, and typically by peroxide ions (quantified). Physico-chemical modifications in the form of an improvement in crystallinity state, an increase in unit cell volume, and the presence of additional Raman bands were noticed and discussed.
Fichier principal
Vignette du fichier
Vandecandelaere_12061.pdf (762.39 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01073854 , version 1 (10-10-2014)

Identifiers

Cite

Nicolas Vandecandelaere, Françoise Bosc, Christian Rey, Christophe Drouet. Peroxide-doped apatites: Preparation and effect of synthesis parameters. Powder Technology, 2014, vol. 255, pp. 3-9. ⟨10.1016/j.powtec.2013.09.015⟩. ⟨hal-01073854⟩
64 View
140 Download

Altmetric

Share

Gmail Facebook X LinkedIn More