scholarly journals Growth and Spectral Investigation on Pure Calcium Phosphate Doped With (Copper and Magnesium) Crystals

Author(s):  
R. Selvaraju ◽  
M. Bhuvaneswari

Calcium stones are most commonly occurring form of cholelithiasis or gallbladder stones most one of the oldest and common afflictions of humans. Calcium phosphate is dissolved minerals in causes of renal to gallbladder stone in both human and animals. Of course, the calcium phosphate is one of the components of gallbladder. Calcium phosphate doped with (Cu and Mg) are crystals are grown by sol-gel method. In the present work the growth and characterization of pure and doped with (Cu and Mg) crystals. The grown crystals were characterization by FT-IR, SEM-EDX and TG/DTA analysis.

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Simona Liliana Iconaru ◽  
Patrick Chapon ◽  
Philippe Le Coustumer ◽  
Daniela Predoi

In this work, the preparation and characterization of silver doped hydroxyapatite thin films were reported and their antimicrobial activity was characterized. Silver doped hydroxyapatite (Ag:HAp) thin films coatings substrate was prepared on commercially pure Si disks by sol-gel method. The silver doped hydroxyapatite thin films were characterized by various techniques such as Scanning electron microscopy (SEM) with energy Dispersive X-ray attachment (X-EDS), Fourier transform infrared spectroscopy (FT-IR), and glow discharge optical emission spectroscopy (GDOES). These techniques have permitted the structural and chemical characterisation of the silver doped hydroxyapatite thin films. The antimicrobial effect of the Ag:HAp thin films onEscherichia coliandStaphylococcus aureusbacteria was then investigated. This is the first study on the antimicrobial effect of Ag:HAp thin films obtained by sol-gel method. The results of this study have shown that the Ag:HAp thin films withxAg=0.5are effective againstE. coliandS. aureusafter 24 h.


2006 ◽  
Vol 15 (5) ◽  
pp. 096369350601500
Author(s):  
Sun Chang ◽  
Sun Kangning

A novel CNTs-based composite, LiZn ferrite (Li0.435Zn0.195Fe2.37 O4) coated CNTs core-shell nanostructure, was successfully prepared by a sol-gel method. The core-shell hetero-nanostructure have confirmed by TEM and XRD. The effect of surface oxidation treatment of MWNTs was investigated by FT-IR. The result showed that MWNTs functionalized with–COOH and –OH, etc. groups form an efficient matrix for the growth of LiZn ferrite crystals.


e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Jiangbo Wang ◽  
Zhong Xin

AbstractPolymethylsilsesquioxane (PMSQ) microspheres with an average diameter of 30nm to 6μm were prepared from methyltrimethoxysilane (MTMS) by a two-step sol-gel method in the presence of hexadecyl trimethyl ammonium chloride (HTAC). The reaction conditions including the concentration of HTAC, water/MTMS ratio, pH value and the temperature in condensation reaction were examined, and aggregation of the microspheres was not observed during the preparation process. Moreover, the structure and thermal stability of PMSQ microspheres were investigated by FT-IR, XRD, TGA, and so on.


2001 ◽  
Vol 18 (5) ◽  
pp. 692-694 ◽  
Author(s):  
Xiong Gang ◽  
Mai Zhen-Hong ◽  
Wang Chao-Ying ◽  
Ni Yong-Ming ◽  
Zhao Zhong-Xian ◽  
...  
Keyword(s):  
Sol Gel ◽  

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