Modification of hydroxyapatite by doping lithium through acid-base reaction

Surface modification for titanium implants by hydroxyapatite nanocomposite

Background: Titanium (Ti) implants are commonly coated with hydroxyapatite (HA). However, HA has some disadvantages such as brittleness, low tensile strength and fracture toughness. It is desirable to combine the excellent mechanical properties of ZrO2 and the chemical inertness of Al2O3 with respect to the purpose of this project which was coating Ti implants with HA-ZrO2-Al2O3 to modify the s...

Enhancement of Methane Adsorption by Lithium Doping into Metal-Organic Framework Cu-BDC

Copper (II) carboxylate, (Cu-BDC), metal-organic-framework (MOF) has been synthesized undersolvothermalconditions and used as a new adsorbent for the methane. The Lithium doping intoCu-BDC, (Li-Cu-BDC), is made by impregnating Cu-BDC with an ethanol solution ofLiNO3, followed by heat treatment in vacuum. The adsorbent was characterized by X-ray diffraction (XRD), Fourier transform infrared ...

LITHIUM DOPING OF FULLERENE: Li12C60

We have studied by NMR, magnetometry and x-ray diiraction several lithium doped fullerides Li x C 60. We have found that the stoichiometry x=12 represents the minimum Li doping for a phase whose structure is strikingly similar to that of pristine C 60 and it extends to much larger Li doping levels x. We have followed the temperature dependence of the structure of the x = 12 phase. It is fcc at ...

Bioactive Surface Modification of Hydroxyapatite

The purpose of this study was to establish an acid-etching procedure for altering the Ca/P ratio of the nanostructured surface of hydroxyapatite (HAP) by using surface chemical and morphological analyses (XPS, XRD, SEM, surface roughness, and wettability) and to evaluate the in vitro response of osteoblast-like cells (MC3T3-E1 cells) to the modified surfaces. This study utilized HAP and HAP tre...

REGULATION OF ACID-BASE HOMEOSTASIS BY THE KIDNEY