使用多孔羟基磷灰石从水溶液中保留氟离子。结构与传导性能。
Retention of fluoride ions from aqueous solution using porous hydroxyapatite. Structure and conduction properties.
作者信息
Hammari L E L, Laghzizil A, Barboux P, Lahlil K, Saoiabi A
机构信息
Laboratoire de Chimie Physique Générale, Faculté des Sciences, BP 1014, Rabat, Maroc.
出版信息
J Hazard Mater. 2004 Oct 18;114(1-3):41-4. doi: 10.1016/j.jhazmat.2004.06.032.
Synthetic porous calcium hydroxyapatite (noted p-HAp) treated with different fluoride concentrations at room temperature in the presence of carbonate, sodium chloride and phosphate-rich media was investigated. The fluoridation rate of the porous calcium hydroxyapatite was 89% using 1 mol/L [F(-)] solution compared with 30% for crystalline hydroxyapatite (c-HAp). The high specific surface area of p-HAp (235 m(2)g(-1)) compared with c-HAp sample (47 m(2)g(-1)) has an important effect on the removal of fluoride ions from aqueous solution, when p-HAp was treated with high fluoride concentration to produce calcium fluorohydroxyapatite materials. Fluoride adsorption on porous hydroxyapatites (p-HAp) modified their structural and conduction properties.
研究了在室温下，在碳酸盐、氯化钠和富含磷酸盐的介质存在下，用不同氟化物浓度处理的合成多孔羟基磷灰石（记为p-HAp）。使用1 mol/L [F⁻]溶液时，多孔羟基磷灰石的氟化率为89%，而结晶羟基磷灰石（c-HAp）为30%。与c-HAp样品（47 m²g⁻¹）相比，p-HAp的高比表面积（235 m²g⁻¹）在用高氟浓度处理以生产氟羟基磷灰石材料时，对从水溶液中去除氟离子有重要影响。氟在多孔羟基磷灰石（p-HAp）上的吸附改变了它们的结构和导电性能。
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