Hydroxyapatite/alumina nanocrystalline composite powders synthesized by sol-gel process for biomedical applications

2014 ◽  
Vol 21 (10) ◽  
pp. 1033-1036 ◽  
Author(s):  
S. Khorsand ◽  
M. H. Fathi ◽  
S. Salehi ◽  
S. Amirkhanlou
Keyword(s):  
Biomedical Applications ◽  
Sol Gel ◽  
Composite Powders ◽  
Sol Gel Process ◽  
Nanocrystalline Composite

The Effects of Aluminum Alkoxides on the Synthesis of Composite Powders of Alumina and Titania

1989 ◽  
Vol 155 ◽  
Author(s):  
Michael T. Harris ◽  
Charles H. Byers ◽  
Ronald R. Brunson
Keyword(s):  
Sol Gel ◽  
Particle Morphology ◽  
Ceramic Materials ◽  
Metal Alkoxide ◽  
Oxide Ceramic ◽  
Powder Synthesis ◽  
Composite Powders ◽  
Sol Gel Process ◽  
Hydrolysis Of ◽  
Uniform Composition

ABSTRACTThe synthesis of mixed oxide ceramic powders that consist of very fine (submicron)-monodisperse particles with uniform composition is desirable in the improvement of existing ceramics and the development of new ceramic materials. Metal alkoxide hydrolysis is a very attractive method for the synthesis of ultrapure composite powders at low temperatures by the sol-gel process.The present study investigates the effects of the hydrolysis of aluminum alkoxides and the condensation products on the growth kinetics and morphology of composite particles containing alumina and titania. Alkoxides of titanium and aluminum are employed; therefore, powders of high purity are produced. Since various solvents are used as media for powder synthesis, the effect of the solvent on particle morphology will also be discussed.

PDMS-modified CaO-SiO2 hybrids derived by a sol-gel process for biomedical applications

2013 ◽  
Vol 35 (6) ◽  
pp. 1193-1197 ◽  
Author(s):  
Jing Chen ◽  
Wenxiu Que ◽  
Zuoli He ◽  
Xuehua Zhang
Keyword(s):  
Biomedical Applications ◽  
Sol Gel ◽  
Sol Gel Process

Effect of Phase Formation on Magnetism of Sol-Gel Derived PbTiO3/(Ni, Pb) Ferrite Composite Powders

2007 ◽  
Vol 336-338 ◽  
pp. 706-708 ◽  
Author(s):  
Yan Ling Dong ◽  
Pi Yi Du ◽  
Wen Jian Weng ◽  
Gao Rong Han
Keyword(s):  
Heat Treatment ◽  
Ferroelectric Phase ◽  
Sol Gel ◽  
Initial Permeability ◽  
Treatment Temperature ◽  
Ferromagnetic Phase ◽  
Composite Powders ◽  
Structure Morphology ◽  
Sol Gel Process

Ferroelectric/ferromagnetic multiphase powdered composites, consisting of PbTiO3 as ferroelectric phase and NiFe2O4 (PbFe12O19) as ferromagnetic phase, were successfully prepared in situ by sol-gel process. The phase structure, morphology and magnetism properties were observed. Biphase powdered ME composite consisting of PbTiO3 and NiFe2O4 is obtained at 700oC. Triphase composite consisting of PbTiO3, NiFe2O4 and PbFe12O19 is obtained above 750oC. With increasing heat-treatment temperature, the particles combine more tightly and the particle size decreases. The saturation magnetization (σs) and the initial permeability (μi) increase with the increase of NiFe2O4 content. The coercive force (Hc) increases with the increase of PbFe12O19 content.

Photocatalysis for Oxidation of Phenol and Reduction of Inorganic Pollutants by Nanocrystalline TiO2-ZrO2 Powders

2004 ◽  
Vol 449-452 ◽  
pp. 289-292 ◽  
Author(s):  
Jae-Kil Han ◽  
Sung Min Choi ◽  
Ik Hyun Oh ◽  
Fumio Saito ◽  
Byung Teak Lee
Keyword(s):  
Photocatalytic Activity ◽  
Sol Gel ◽  
Homogeneous Distribution ◽  
Particle Sizes ◽  
Inorganic Pollutants ◽  
Composite Powders ◽  
Sol Gel Process ◽  
Oxidation Of Phenol ◽  
Xrd And Tem

TiO2(1-.ZrO2. (.=- 0.2, 0.4, 0.6 and 0.8) composite powders having a homogeneous distribution and nanocrystalline were successfully synthesized by sol-gel process using titanium iso-propoxide as precursor. The particle sizes of TiO2-ZrO2powders calcined at 600°C were measured ranging from 10nm to 19nm by XRD and TEM. For the comparison of photocatalytic activity, TiO2-ZrO2composite powders were tested in the degradation of phenol and the photoreduction of inorganic pollutants. The degradation of phenol increased with increase the content of anatase TiO2phase.

The effect of sol-gel process on the microstructure and particle size of ZrC–SiC composite powders

2020 ◽  
Vol 46 (4) ◽  
pp. 5244-5251 ◽  
Author(s):  
Chen Zeng ◽  
Kai Tong ◽  
Mingyu Zhang ◽  
Qizhong Huang ◽  
Zhean Su ◽  
...  
Keyword(s):  
Particle Size ◽  
Sol Gel ◽  
Composite Powders ◽  
Sol Gel Process

scholarly journals Hybrid Sol-Gel Coatings Doped with Non-Toxic Corrosion Inhibitors for Corrosion Protection on AZ61 Magnesium Alloy

Gels ◽  
2022 ◽  
Vol 8 (1) ◽  
pp. 34
Author(s):  
Luis Rodríguez-Alonso ◽  
Jesús López-Sánchez ◽  
Aida Serrano ◽  
Oscar Rodríguez de la Fuente ◽  
Juan Carlos Galván ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Biomedical Applications ◽  
Corrosion Inhibitors ◽  
Sol Gel ◽  
Hybrid Coatings ◽  
Al Alloy ◽  
Ph Measurements ◽  
Sol Gel Process ◽  
Sol Gel Films ◽  
Human Fluid

Physiological human fluid is a natural corrosive environment and can lead to serious corrosion and mechanical damages to light Mg–Al alloys used in prosthetics for biomedical applications. In this work, organic–inorganic hybrid coatings doped with various environmentally friendly and non-toxic corrosion inhibitors have been prepared by the sol-gel process for the corrosion protection of AZ61 magnesium alloys. Effectiveness has been evaluated by pH measurements, optical microscopy, and SEM during a standard corrosion test in a Hanks’ Balanced Salt Solution. The results showed that the addition of an inhibitor to the sol-gel coating can improve significantly the corrosion performance, being an excellent barrier for the L-cysteine-doped hybrid sol-gel films. The incorporation of TiO2 nanoparticles, 2-Aminopyridine and quinine organic molecules slowed down the corrosion rate of the Mg–Al alloy. Graphene oxide seemed to have the same response to corrosion as the hybrid sol-gel coating without inhibitors.

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