Formation of hollow porous TiO2 nanospheres via the encapsulation of CO2 nanobubbles for high-performance adsorption and photocatalysis

2020 ◽  
Vol 49 (24) ◽  
pp. 8274-8281
Author(s):  
Hack-Keun Lee ◽  
Seung-Woo Lee
Keyword(s):  
High Performance ◽  
Sol Gel ◽  
Photocatalytic Properties ◽  
Porous Tio2 ◽  
Sol Gel Process

Hollow porous TiO2 nanospheres, prepared via a sol-gel process including generation of CO2 gas, show excellent adsorption and photocatalytic properties.

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.

Highly Porous (TiO2−SiO2−TeO2)/Al2O3/TiO2Composite Nanostructures on Glass with Enhanced Photocatalysis Fabricated by Anodization and Sol−Gel Process

2003 ◽  
Vol 107 (27) ◽  
pp. 6586-6589 ◽  
Author(s):  
Song-Zhu Chu ◽  
Satoru Inoue ◽  
Kenji Wada ◽  
Di Li ◽  
Hajime Haneda ◽  
...  
Keyword(s):  
Sol Gel ◽  
Porous Tio2 ◽  
Sol Gel Process ◽  
Highly Porous

Synthesis of Li-doped ZnO via sol–gel process: structural, optical and photocatalytic properties

2016 ◽  
Vol 28 (3) ◽  
pp. 2817-2825
Author(s):  
Faten Ajala ◽  
Hinda Lachheb ◽  
Nabil Bouazizi ◽  
Ammar Houas
Keyword(s):  
Sol Gel ◽  
Photocatalytic Properties ◽  
Sol Gel Process ◽  
Doped Zno

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
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