scholarly journals Sol-Gel Synthesis of Ceramic-Organic Nano Composites

1992 ◽  
Vol 274 ◽  
Author(s):  
Helmut K. Schmidt
Keyword(s):  
Quantum Dots ◽  
Protective Coatings ◽  
Sol Gel ◽  
Nano Particles ◽  
Nano Composites ◽  
Sol Gel Synthesis

ABSTRACTSol-gel synthesis can be used for generating nano particles from a variety of compositions. In order to avoid aggregation and undesired gelation, it is necessary to react the particle surfaces with ligands reducing their interaction but allowing the incorporation into desired matrices. Three examples (semiconducting and metal quantum dots, ZrO2 and Al2O3 containing composites) are described, their properties and some applications for optics and protective coatings are discussed.

scholarly journals Formation of nanoscopic CaF2via a fluorolytic sol–gel process for antireflective coatings

2015 ◽  
Vol 3 (8) ◽  
pp. 1716-1723 ◽  
Author(s):  
Alexander Rehmer ◽  
Kerstin Scheurell ◽  
Erhard Kemnitz
Keyword(s):  
Sol Gel ◽  
Nano Particles ◽  
Antireflective Coatings ◽  
Sol Gel Process ◽  
Sol Gel Synthesis ◽  
First Time

For the first time transparent antireflective CaF2-coatings were prepared from clear CaF2-sols obtained via the fluorolytic sol–gel synthesis and containing homo-dispersed CaF2 nano-particles.

Dual role of the reactant MOH (M=Li, Na or K) in the growth of ZnO quantum dots under a sol–gel process: promoter and inhibitor

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 50173-50179 ◽  
Author(s):  
Song Li ◽  
Song Ye ◽  
Tianhua Liu ◽  
Zhuang Guo ◽  
Huiyun Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Sol Gel ◽  
Dual Role ◽  
Synthesis Process ◽  
Sol Gel Process ◽  
Zno Quantum Dots ◽  
Sol Gel Synthesis

ZnO quantum dots (QDs) with tunable size and photoluminescence can be achieved simply by controlling their growth during the sol–gel synthesis process.

Sol-Gel Synthesis and Characterization of BaAl2O4 and Co: BaAl2O4 Nanoparticles

2010 ◽  
Vol 148-149 ◽  
pp. 1067-1070 ◽  
Author(s):  
Cai Na Luan ◽  
Jin Ma ◽  
Zhen Zhu ◽  
Ling Yi Kong ◽  
Qiao Qun Yu
Keyword(s):  
Sol Gel ◽  
Visible Region ◽  
Emission Spectra ◽  
Chelating Agent ◽  
Nano Particles ◽  
Luminescence Spectroscopy ◽  
Metal Nitrates ◽  
Heat Treated ◽  
Nano Crystal ◽  
Sol Gel Synthesis

In this paper, we prepared BaAl2O4 and Co:BaAl2O4 nanoparticles from aqueous solution of metal nitrates containing citric acid as a chelating agent by sol-gel method. The gel was heat-treated at temperatures ranging from 710°C to 1000°C. The heat-treated powders were characterized by X-ray diffraction analysis (XRD), infrared spectra (IR) and luminescence spectroscopy. From the results of the characterization, we find the prepared powders are pure nano-particles of BaAl2O4 after heat-treated at 900°C temperature. The emission spectra of Co: BaAl2O4 in the visible region indicates the existence of Co2+ in the tetrahedral sites of BaAl2O4 nano-crystal.

scholarly journals Sol-Gel Synthesis, Characterization, and Effect of CdS nanoparticles on activity of liver Enzymes

2020 ◽  
Vol 3 (1) ◽  
pp. 35-42
Author(s):  
Asmaa J. Al-lamei
Keyword(s):  
Particle Size ◽  
Organic Molecules ◽  
Liver Enzymes ◽  
Sol Gel ◽  
Nano Particles ◽  
Cds Nanoparticles ◽  
Sol Gel Synthesis

This paper describes the synthesis of CdS nanoparticles by sol-gel route using organic molecules as gelatin media. At70ᵒC the CdS nanoparticles are formed with particle size 75.28nm.The nanoparticles are characterized by XRD,SEM, AFM and FTIR. The effect of nanoparticles on activity of liver enzymes (GPT and GOT)is also studied by using different concentration of NPs. It is found that the activity of GPT and GOT enzymes increases with decreases in nano particles concentrations and decreases in inhibition percentage. The greater activation of nano was demonstrated at concentration (10-1 M).

scholarly journals Lanthanide doped ZnS quantum dots dispersed in silica glasses: an easy one pot sol–gel synthesis for obtaining novel photonic materials

2008 ◽  
Vol 18 (43) ◽  
pp. 5193 ◽  
Author(s):  
José Planelles-Aragó ◽  
Beatriz Julián-López ◽  
Eloisa Cordoncillo ◽  
Purificación Escribano ◽  
Fabienne Pellé ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Sol Gel ◽  
Photonic Materials ◽  
One Pot ◽  
Silica Glasses ◽  
Sol Gel Synthesis

Sol–gel synthesis of aluminum titanate (Al2TiO5) nano-particles

2008 ◽  
Vol 206 (1-3) ◽  
pp. 282-285 ◽  
Author(s):  
M. Sobhani ◽  
H.R. Rezaie ◽  
R. Naghizadeh
Keyword(s):  
Sol Gel ◽  
Nano Particles ◽  
Aluminum Titanate ◽  
Sol Gel Synthesis
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