Synthesis and Characterization of Nanosized ZnxMn1-xFe2O4 Powders by Glycothermal Process

2005 ◽  
Vol 486-487 ◽  
pp. 436-439 ◽  
Author(s):  
Dong Sik Bae ◽  
Eun Jung Kim ◽  
Sang Whan Park ◽  
Kyong Sop Han
Keyword(s):  
Magnetic Property ◽  
Ethylene Glycol ◽  
Room Temperature ◽  
Synthesis And Characterization ◽  
Metal Nitrates ◽  
Temperature And Pressure ◽  
Average Size ◽  
Glycol Solution ◽  
Mild Temperature

Nanosized ZnxMn1-xFe2O4 powders were prepared in ethylene glycol solution under mild temperature and pressure conditions by precipitation from metal nitrates. The average size and distribution of the synthesized ZnxMn1-xFe2O4 powders were 10- 20 ㎚ and narrow, respectively. The magnetic property of the synthesized ZnxMn1- xFe2O4 powder was of superparamagnetic character at room temperature.

Synthesis and Characterization of CoFe2O4 Nanoparticles by Glycothermal Process

2007 ◽  
Vol 544-545 ◽  
pp. 865-868 ◽  
Author(s):  
Chil Soon Lee ◽  
Dong Sik Bae
Keyword(s):  
Room Temperature ◽  
Cofe2o4 Nanoparticles ◽  
Synthesis Parameters ◽  
Metal Nitrates ◽  
Temperature And Pressure ◽  
Starting Solutions ◽  
Average Size ◽  
Glycol Solution ◽  
Mild Temperature

CoFe2O4 nanoparticles were prepared in ethylene glycol solution under mild temperature and pressure conditions by precipitation from metal nitrates. The average size of the synthesized CoFe2O4 nanoparticles was in the range of 5 to 10, and they were narrowly distributed in the crystalline phase. Their magnetic property was of superparamagnetic character at room temperature. The effect of synthesis parameters is discussed such as the pH of starting solutions and reaction temperature.

Synthesis and Characterization of Nanosized ITO Powders by Glycothermal Processing

2005 ◽  
Vol 486-487 ◽  
pp. 440-443
Author(s):  
Dong Sik Bae ◽  
Hye Kyoung Kim ◽  
Rak Hee Kim ◽  
Jae Won Kim ◽  
Je Hyun Lee ◽  
...  
Keyword(s):  
Indium Tin Oxide ◽  
Potassium Hydroxide ◽  
Oxide Powders ◽  
Metal Nitrates ◽  
Aqueous Potassium Hydroxide ◽  
Temperature And Pressure ◽  
Average Size ◽  
Glycol Solution ◽  
Mild Temperature

Nanosized ITO(indium tin oxide) powders were prepared in ethylene glycol solution under mild temperature and pressure conditions by precipitation from metal nitrates with aqueous potassium hydroxide. The average size and distribution of the synthesized ITO powders were about 20 ㎚ and broad, respectively. The phase of synthesized particles was crystalline reacted at 230 0C for 6 h.. The optical properties of the synthesized ITO powders were transparent.

Fabrication and Characterization of Barium Doped Ceria Nanopowders by a Solvothermal Processing

2016 ◽  
Vol 868 ◽  
pp. 84-88
Author(s):  
Dae Han Lee ◽  
Dong Sik Bae
Keyword(s):  
Ammonium Hydroxide ◽  
Cubic Phase ◽  
Solvent Ratio ◽  
Solution Ph ◽  
Starting Solution ◽  
Metal Nitrates ◽  
Temperature And Pressure ◽  
Average Size ◽  
Mild Temperature

Ba doped CeO2 nanopowders were prepared under mild temperature and pressure conditions by precipitation from metal nitrates with aqueous ammonium hydroxide. Spherical Ba doped CeO2 nanopowders were obtained with reaction at the temperature range of 210°C to 230°C for 6 h. The average size of the synthesized Ba doped CeO2 powders were below 10 nm and its distribution was narrow. The XRD pattern showed that the synthesized Ba doped CeO2 powders were crystalline with cubic phase of CeO2. This study has shown that the synthesis of Ba doped CeO2 nanopowders is possible under mild temperature and pressure conditions in ethylene gylcol solution. The effects of synthesis parameters, such as the solvent ratio of starting solution, pH of starting solution, reaction temperature and time, are discussed.

scholarly journals Synthesis and characterization of a new ZIF-67@MgAl2O4 nanocomposite and its adsorption behaviour

RSC Advances ◽  
2021 ◽  
Vol 11 (22) ◽  
pp. 13245-13255
Author(s):  
Mehdi Davoodi ◽  
Fatemeh Davar ◽  
Mohammad R. Rezayat ◽  
Mohammad T. Jafari ◽  
Mehdi Bazarganipour ◽  
...  
Keyword(s):  
Room Temperature ◽  
Magnesium Aluminate ◽  
Synthesis And Characterization ◽  
Magnesium Aluminate Spinel ◽  
Adsorption Behaviour ◽  
Zeolitic Imidazolate Framework ◽  
Simple Method

New nanocomposite of zeolitic imidazolate framework-67@magnesium aluminate spinel (ZIF-67@MgAl2O4) has been fabricated by a simple method at room temperature with different weight ratios.

scholarly journals Synthesis and Characterization of Polyphosphazenes Modified with Hydroxyethyl Methacrylate and Lactic Acid

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Evelyn Carolina Martínez Ceballos ◽  
Ricardo Vera Graziano ◽  
Gonzalo Martínez Barrera ◽  
Oscar Olea Mejía
Keyword(s):  
Lactic Acid ◽  
Ring Opening ◽  
Room Temperature ◽  
Block Structure ◽  
Ring Opening Polymerization ◽  
Synthesis And Characterization ◽  
Poly Lactic Acid ◽  
Hydroxyethyl Methacrylate ◽  
H Nmr

Poly(dichlorophosphazene) was prepared by melt ring-opening polymerization of the hexachlorocyclotriphosphazene. Poly[bis(2-hydroxyethyl-methacrylate)-phosphazene] and poly[(2-hydroxyethyl-methacrylate)-graft-poly(lactic-acid)-phosphazene] were obtained by nucleophilic condensation reactions at different concentrations of the substituents. The properties of the synthesized copolymers were assessed by FTIR,1H-NMR and31P-NMR, thermal analysis (DSC-TGA), and electron microscopy (SEM). The copolymers have a block structure and show twoTg's below room temperature. They are stable up to a temperature of 100°C. The type of the substituents attached to the PZ backbone determines the morphology of the polymers.

Sign in / Sign up

Export Citation Format

Share Document