Effect of concentration on nano hydroxyapatite powder by wet chemical precipitation route

2018 ◽  
Vol 11 (3) ◽  
pp. 545
Author(s):  
R. Panneerselvam ◽  
N. Anandhan ◽  
K.P. Ganesan ◽  
T. Marimuthu ◽  
I. Joseph Paneerdoss
Keyword(s):  
Chemical Precipitation ◽  
Hydroxyapatite Powder ◽  
Wet Chemical ◽  
Wet Chemical Precipitation

scholarly journals Synthesis and characterization of nano-hydroxyapatite added with magnesium obtained by wet chemical precipitation

2021 ◽  
Author(s):  
Brandon A. Correa-Piña ◽  
Omar M. Gomez-Vazquez ◽  
Sandra M. Londoño-Restrepo ◽  
Luis F. Zubieta-Otero ◽  
Beatriz M. Millan-Malo ◽  
...  
Keyword(s):  
Chemical Precipitation ◽  
Synthesis And Characterization ◽  
Wet Chemical ◽  
Wet Chemical Precipitation

Synthesis and Structural Characterization of Zinc and Magnesium Doped Hydroxyapatite

2012 ◽  
Vol 531-532 ◽  
pp. 250-253 ◽  
Author(s):  
Hong Quan Zhang ◽  
Ming Zhang ◽  
Lu Wei Fu ◽  
Yu Ning Cheng
Keyword(s):  
Hydrothermal Treatment ◽  
Structural Characterization ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Starting Solution ◽  
Wet Chemical ◽  
Zn Ions ◽  
Wet Chemical Precipitation ◽  
Surface Of Crystals

Zn or Mg ions doped hydroxyapatite (HA) particles were successfully developed by introducing various concentration of Zn or Mg in the starting solution using wet chemical precipitation method and followed a hydrothermal treatment. The products were identified as HA by XRD and FTIR, and the precipitated particles had a rod-like morphology. All the products for Mg and Zn ions concentration in the preparation solution less than 40 mol% were identified as HA. Substitution of Mg and Zn in HA crystal would impair the crystallization of HA and significantly reduce the length of a, c values of HA unit cell, which clearly demonstrated that Mg or Zn ions were structurally incorporated into the apatite crystals, they were not just absorbed on the surface of crystals.

scholarly journals Far-infrared optical constants of ZnO and ZnO/Ag nanostructures

RSC Advances ◽  
2014 ◽  
Vol 4 (40) ◽  
pp. 20902-20908 ◽  
Author(s):  
Reza Zamiri ◽  
Avito Rebelo ◽  
Golriz Zamiri ◽  
Atena Adnani ◽  
Ajay Kuashal ◽  
...  
Keyword(s):  
Optical Constants ◽  
Far Infrared ◽  
Cost Effective ◽  
Chemical Precipitation ◽  
Chemical Precipitation Method ◽  
Precipitation Method ◽  
Ag Nanoparticle ◽  
Wet Chemical ◽  
Wet Chemical Precipitation

We report on the synthesis of ZnO nanoplates and ZnO nanoplate/Ag nanoparticle heterostructures via a simple and cost effective wet chemical precipitation method.

Preparation of F-Doped Hydroxyapatite via Wet-Chemical Precipitation Technique Combined with pH-Cycling

2015 ◽  
Vol 1117 ◽  
pp. 205-208
Author(s):  
V. Zalite ◽  
Karina Kostrjukova ◽  
Janis Locs
Keyword(s):  
Chemical Precipitation ◽  
Infrared Spectrometry ◽  
Technological Parameters ◽  
Substitution Level ◽  
Vis Spectroscopy ◽  
Ph Cycling ◽  
Ft Ir ◽  
Wet Chemical ◽  
Wet Chemical Precipitation

F-doped hydroxyapatite (FHAp, Ca10(PO4)6OH2-xF2x) was synthesized by two step technology – wet-chemical precipitation and pH-cycling. Obtained powders were dried and calcined for further characterization. FHAp were analyzed by Fourier transform infrared spectrometry (FT-IR), scanning electron microscopy (SEM) and UV-VIS spectrophotometry. FT-IR analysis approved fluoride incorporation into HAp structure, confirmed by OH...F bonding at 3546 and 745 cm-1. SEM microphotographs showed, that as-synthesized FHAp precipitates consist of needle-like crystallites. UV-VIS spectroscopy results were used for the determination of actual F- substitution level. After evaluation of results it was concluded, that fluoride substitution level in FHAp structure reached only x≤0.6. To perform higher substitution level, the technological parameters of the process need to be optimized.

scholarly journals Synthesis and Biomedical Application of Hydroxyapatite as Carrier for Loading and Controlled Delivery of Antibiotics

2019 ◽  
Vol 69 (12) ◽  
pp. 3400-3405
Author(s):  
Mariana Mateescu ◽  
Sanda Maria Doncea ◽  
Iuliana Raut ◽  
Cristina Lavinia Nistor ◽  
Ioneta Codrina Bujanca
Keyword(s):  
Controlled Release ◽  
Biomedical Application ◽  
Drug Loading ◽  
Antibacterial Properties ◽  
Drug Carriers ◽  
Chemical Precipitation ◽  
Controlled Delivery ◽  
Wet Chemical ◽  
Uv Visible ◽  
Wet Chemical Precipitation

The hydroxyapatite (HA) nano and microparticles were synthesized by wet-chemical precipitation in order to use them as drug carriers for biomedical applications. Scanning Electron Microscopy (SEM), Dynamic Light Scattering (DLS) and Fourier Transform Infrared Spectroscopy (FTIR) were performed to assess their size, external morphology and chemical composition. The properties of HA particles as drug carriers for antibiotics delivery were evaluated with doxycycline and chloramphenicol. The amount of drug loading and release was determined by UV-Visible spectrophotometry. The antibacterial properties of loaded HA particles were evaluated using gram-positive Bacillus subtilis bacteria and gram-negative Pseudomonas aeruginosa bacteria. The synthesized particles of HA exhibit a high adsorption capacity (around 99%) and good controlled release properties for doxycycline. The adsorption of chloramphenicol on HA was extremely low (about 2%). According to the results, the compatibility between the drug and substrate is an important factor in the absorption process, and the hydroxyapatite is a very promising carrier for controlled release of antibiotics.

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