scholarly journals Ternary nanocomposite of ZnFe2O4/α-Fe2O3/ZnO; synthesis via coprecipitation method and physical properties characterization

2021 ◽  
Vol 127 (6) ◽  
Author(s):  
Somayeh Shams ◽  
Zahra Sheibanizadeh ◽  
Zahra Khalaj
Keyword(s):  
Physical Properties ◽  
Coprecipitation Method ◽  
Ternary Nanocomposite ◽  
Properties Characterization

Task-specific Ionic Liquids as a Green Catalysts and Solvents for Organic Synthesis

2020 ◽  
Vol 7 (1) ◽  
pp. 105-119 ◽  
Author(s):  
Swapnil A. Padvi ◽  
Dipak S. Dalal
Keyword(s):  
Ionic Liquids ◽  
Physical Properties ◽  
Organic Synthesis ◽  
Review Article ◽  
Present Review ◽  
Organic Transformations ◽  
The Past ◽  
Properties Characterization

Task-specific ionic liquids (TSILs) have received increased attention over the past few years as a Green Catalysts and Solvents for a large number of organic transformations. The present review article aims to provide an introduction, types of task-specific ionic liquids, preparation/synthesis, physical properties, characterization, use of TSILs as solvent and catalyst in organic synthesis.

scholarly journals Ternary Nanocomposite of ZnFe2O4/α-Fe2O3/ZnO; Synthesis via Coprecipitation Method and Physical Properties Characterization

2021 ◽  
Author(s):  
Somayeh Shams ◽  
Zahra Sheibanizadeh ◽  
Zahra Khalaj
Keyword(s):  
Physical Properties ◽  
Band Gap ◽  
Transition Metal Oxides ◽  
Band Gap Energy ◽  
Coprecipitation Method ◽  
Good Efficiency ◽  
Gap Energy ◽  
Visible Wavelengths ◽  
The Individual ◽  
Post Synthesis

Abstract ZnFe 2 O 4 /α-Fe 2 O 3 /ZnO ternary transition metal oxides nanocomposite powder was successfully synthesized by facile coprecipitation method directly from metalorganic precursors within 4 hours processing time considerably shorter than other reported methods. To study post-synthesis thermal treatment effects on physical properties calcination process was applied at 500 °C, 600 °C and 700 °C individually in furnace for one hour. The structure, phase formation, morphology and optical features of the samples were characterized by means of powder X-ray diffraction, scanning electron microscopy and UV-Visible spectroscopy. The results show formation of pure and homogeneous composites comprised of nanoparticles with good crystallization in narrow range of crystallite size between 25 nm-39 nm. The particle sizes were also estimated to be in the range of 48 nm - 93 nm. The optical property was studied by recording the absorbance spectrum in the range of 200 nm - 700 nm. The absorption pattern illustrated that the product can be driven by both UV and visible wavelengths with a good efficiency which is more desirable for intended applications like photocatalytic activities compare to the individual components. By using Tauc's method the allowed direct band gap energy and indirect band gap energy of the prepared nanocomposite was estimated to be around 2.28 eV and 2.75 eV, respectively.

scholarly journals Physical properties characterization of a peritectic mold flux formed from the addition of calcitic marble residue in the commercial one

2019 ◽  
Vol 8 (3) ◽  
pp. 3297-3305
Author(s):  
Igor Teixeira da Costa ◽  
Cássio Santos de Carvalho ◽  
José Roberto de Oliveira ◽  
Estéfano Aparecido Vieira
Keyword(s):  
Physical Properties ◽  
Mold Flux ◽  
Properties Characterization

Physical properties characterization of WO3 films grown by hot-filament metal oxide deposition

2010 ◽  
Vol 174 (1-3) ◽  
pp. 182-186 ◽  
Author(s):  
J. Díaz-Reyes ◽  
R.J. Delgado-Macuil ◽  
V. Dorantes-García ◽  
A. Pérez-Benítez ◽  
J.A. Balderas-López ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Physical Properties ◽  
Oxide Deposition ◽  
Hot Filament ◽  
Properties Characterization
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