Production and Shaping of High Performance Phosphors for Lighting by Using Sol-Gel Process.

ChemInform ◽  
2005 ◽  
Vol 36 (35) ◽  
Author(s):  
G. Bertrand-Chadeyron ◽  
D. Boyer ◽  
P. Boutinaud ◽  
A. C. Franville ◽  
J. M. Nedelec ◽  
...  
Keyword(s):  
High Performance ◽  
Sol Gel ◽  
Sol Gel Process

Expansion of Nanosized MgSiO3/Chitosan Nanocomposite Structural and Spectroscopic for Loading Velosef by Nanomaterial Intervention

2021 ◽  
Author(s):  
amal aboelnaga ◽  
talaat Meaz ◽  
amany M elnahrawy
Keyword(s):  
Antimicrobial Activity ◽  
High Performance ◽  
Sol Gel ◽  
Polymerization Process ◽  
Absorption Bands ◽  
Structural Morphology ◽  
Crystallinity Degree ◽  
Chitosan Matrix ◽  
Antimicrobial Studies ◽  
Sol Gel Process

Abstract The aim of this study is to investigate the effect of different doses of Velosef in magnesium silica/chitosan nanocomposite in terms of structural, morphology, optical properties, and bioactivity. Loading Velosef in fine-sized magnesium silica/chitosan is an efficient engineering approach for drug delivery. The sol-gel process was used to prepare magnesium silica fine-sized before being blended into chitosan matrix, which acts as a potential morphogenetic biomaterial. The Velosef/magnesium silica/chitosan nanocomposites were characterized by XRD, TEM, SEM, FTIR, UV-absorption, and antimicrobial studies. The XRD was characteristic of the crystallinity degree of the MgO-SiO2/chitosan/Velosef nanocomposites with three maximum peaks at 26.37°, 33.34o, 36.9°. FTIR results indicated the structural change occurred with the Velosef sol-gel polymerization process. UV-absorbance reveals that the MgO-SiO2/chitosan nanocomposite appeared a high performance for loading Velosef at two absorption bands at 253 and 347 nm. The MgO-SiO2/Chitosan/Velosef nanocomposites showed considerable antimicrobial activity in opposition to the tested representative microorganisms. The maximum antimicrobial activity was obtained with MgO-SiO2/Chitosan against both Escherichia coli and Candida albicans (37 mm), while the minimum antimicrobial activity (30 mm) was recorded against B. mycoides and E. coli with control.

Preparation of LiTaO3 Nano-Crystalline Films by Sol-Gel Process

2012 ◽  
Vol 531-532 ◽  
pp. 446-449 ◽  
Author(s):  
Jun Gou ◽  
Jun Wang ◽  
Ze Hua Huang ◽  
Ya Dong Jiang
Keyword(s):  
Thin Films ◽  
High Performance ◽  
Detection System ◽  
Sol Gel ◽  
Precursor Solution ◽  
Film Material ◽  
Nano Crystalline ◽  
Sol Gel Process ◽  
Crystalline Films ◽  
P Type

Lithium tantalite (LiTaO3) thin film material shows good feasibility and potential for the application of high-performance detection system. In this paper, sol-gel process of LiTaO3 thin films on p-type (111) silicon substrates was described. Stable precursor solution with a desired viscosity was obtained using lithium acetate (LiAc) and tantalum ethoxide (Ta(OC2H5)5) as starting materials. Heat treatment process was optimized to fabricate LiTaO3 films of high crystallinity. Higher crystalline quality films were obtained when each spin-coating process was followed by an annealing operation. Microstructures and crystallization properties of LiTaO3 thin films were further studied. Nano-crystalline films were obtained after annealing at 700 °C for 5 min. The experimental results indicated that the crystallinity and mean grain size of LiTaO3 thin films were proportional to the film thickness.

High-performance Li3V2(PO4)3/C cathode material with a mixed morphology prepared by solvothermal assisted sol–gel process

Ionics ◽  
2018 ◽  
Vol 25 (5) ◽  
pp. 2057-2067 ◽  
Author(s):  
Xiao-Kai Ding ◽  
Jing Liu ◽  
Lu-Lu Zhang ◽  
Xue-Lin Yang
Keyword(s):  
Cathode Material ◽  
High Performance ◽  
Sol Gel ◽  
Sol Gel Process

scholarly journals Morphologically and compositionally tuned lithium silicate nanorods as high-performance carbon dioxide sorbents

2016 ◽  
Vol 4 (43) ◽  
pp. 16928-16935 ◽  
Author(s):  
P. V. Subha ◽  
Balagopal N. Nair ◽  
A. Peer Mohamed ◽  
G. M. Anilkumar ◽  
K. G. K. Warrier ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Performance ◽  
Sol Gel ◽  
Lithium Silicate ◽  
Sol Gel Process

The lithium silicate nanorods derived by a microwave sol gel process display extremely fast CO2 absorption rates as well as remarkable durability for prolonged application.

Chemical Synthesis of Fine Powders

MRS Bulletin ◽  
1990 ◽  
Vol 15 (1) ◽  
pp. 18-25 ◽  
Author(s):  
J. Livage ◽  
M. Henry ◽  
J.P. Jolivet ◽  
C. Sanchez
Keyword(s):  
High Performance ◽  
Colloidal Particles ◽  
Sol Gel ◽  
Solid Material ◽  
Narrow Particle Size Distribution ◽  
Molecular Precursors ◽  
Inorganic Oxides ◽  
Fine Powders ◽  
Sol Gel Process ◽  
Gel Processing

Interest in the synthesis of submicron monodispersed powders is increasing. Such powders find applications in the ceramic industry when high performance materials are required. Sintering time and temperature can be significantly reduced with powders of narrow particle-size distribution. Fine colloidal particles can be made by a variety of methods, from the vapor phase or the liquid phase.The sol gel process offers new approaches to the synthesis of fine powders. Starting from molecular precursors, such as metal alkoxides or aqueous solutions, an oxide network is obtained via inorganic polymerization reactions. These reactions occur in solution, and the term “sol-gel processing” is often used to describe the synthesis of inorganic oxides by wet chemical methods. It offers many advantages compared to the conventional powder route. One unique advantage is the ability to go all the way from the molecular precursor to the solid material, permitting better control of the entire process and allowing synthesis of “tailor-made” powders.

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