scholarly journals Synthesis of nanostructured iron oxides and new magnetic ceramics using sol-gel and SPS techniques

2017 ◽  
Author(s):  
E. K. Papynov ◽  
O. O. Shichalin ◽  
A. A. Belov ◽  
A. S. Portnyagin ◽  
V. Yu. Mayorov ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Sol Gel ◽  
Magnetic Ceramics

Sol-gel processing of electrical and magnetic ceramics

1994 ◽  
Vol 38 (4) ◽  
pp. 305-324 ◽  
Author(s):  
Charles D.E. Lakeman ◽  
David A. Payne
Keyword(s):  
Sol Gel ◽  
Magnetic Ceramics ◽  
Gel Processing

Characterization of Iron Oxide Nanoparticles for Sol-Gel Dip-Coating Method Prepared Thin Films

2013 ◽  
Vol 704 ◽  
pp. 275-280
Author(s):  
Janina Setina ◽  
Alona Gabrene ◽  
Inna Juhnevica ◽  
Gundars Mezinskis
Keyword(s):  
Thin Films ◽  
Iron Oxide ◽  
Iron Oxides ◽  
Sol Gel ◽  
Morphological Characteristics ◽  
Dip Coating ◽  
X Ray Diffraction ◽  
Coating Method ◽  
Dip Coating Method ◽  
Dip Coating Technique

The paper describes two methods of syntheses of iron oxides, microstructure and morphology of magnetite nanoparticles. Nanocomposite thin films of SiO2/Fe3O4 have been prepared with sol-gel dip coating technique: dip-coating from SiO2/Fe3O4 sol and encapsulation magnetite between two SiO2 layers. Structural and morphological characteristics of iron oxides particles and prepared film were analyzed by X-Ray Diffraction, SEM, FTIR, DTA, AFM. AFM topography of surface and measurements of roughness has shown that using iron oxide encapsulation between two SiO2 layers to provide the even distribution of iron oxide, results as high quality films with low Rq values 1.5 2.7 nm.

Some properties of thin layers of silica containing carbon and iron oxides prepared by the sol-gel method

1990 ◽  
Vol 25 (5) ◽  
pp. 2569-2572 ◽  
Author(s):  
L. Murawski ◽  
L. Wicikowski ◽  
O. Gzowski ◽  
I. Davoli ◽  
S. Stizza ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Sol Gel ◽  
Thin Layers ◽  
Gel Method ◽  
Sol Gel Method

scholarly journals Synthesis, Characterization, and Evaluation of Boron-Doped Iron Oxides for the Photocatalytic Degradation of Atrazine under Visible Light

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Shan Hu ◽  
Guanglong Liu ◽  
Duanwei Zhu ◽  
Chao Chen ◽  
Shuijiao Liao
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Iron Oxides ◽  
Visible Light Irradiation ◽  
Sol Gel ◽  
Band Gap Energy ◽  
Light Irradiation ◽  
Bet Surface Area ◽  
Boron Doped

Photocatalytic degradation of atrazine by boron-doped iron oxides under visible light irradiation was investigated. In this work, boron-doped goethite and hematite were successfully prepared by sol-gel method with trimethylborate as boron precursor. The powders were characterized by XRD, UV-vis diffuse reflectance spectra, and porosimetry analysis. The results showed that boron doping could influence the crystal structure, enlarge the BET surface area, improve light absorption ability, and narrow their band-gap energy. The photocatalytic activity of B-doped iron oxides was evaluated in the degradation of atrazine under the visible light irradiation, and B-doped iron oxides showed higher atrazine degradation rate than that of pristine iron oxides. Particularly, B-doped goethite exhibited better photocatalytic activity than B-doped hematite.

scholarly journals Sol-gel synthesis of magnetic sorbents based on porous iron oxides for the removal of U(VI) from aqueous solution

2017 ◽  
Author(s):  
E. K. Papynov ◽  
A. S. Portnyagin ◽  
A. I. Cherednichenko ◽  
I. A. Tkachenko ◽  
E. B. Modin ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Iron Oxides ◽  
Sol Gel ◽  
Porous Iron ◽  
Magnetic Sorbents ◽  
Sol Gel Synthesis

scholarly journals Synthesis and Characterization of Some Iron Oxides by Sol-Gel Method

1994 ◽  
Vol 113 (2) ◽  
pp. 405-412 ◽  
Author(s):  
G.M. da Costa ◽  
E. De Grave ◽  
P.M.A. de Bakker ◽  
R.E. Vandenberghe
Keyword(s):  
Iron Oxides ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Gel Method ◽  
Sol Gel Method

The Investigation of Superparamagnetic Colloidal Particles FemOn-SiO2

2016 ◽  
Vol 247 ◽  
pp. 138-141 ◽  
Author(s):  
Peter V. Kharitonskii ◽  
Kamil G. Gareev ◽  
A.M. Frolov ◽  
S.V. Lebedev ◽  
P.V. Velikorussov
Keyword(s):  
Experimental Data ◽  
Magnetic Properties ◽  
Size Effect ◽  
Iron Oxides ◽  
Magnetic Moment ◽  
Remanent Magnetization ◽  
Colloidal Particles ◽  
Magnetic State ◽  
Sol Gel ◽  
Magnetostatic Interaction

Colloidal particles based on iron oxides and silica were obtained by sol-gel method. Hysteresis curves at various temperatures were built by MPMS SQUID VSM. Theoretically calculated values of samples remanent magnetization were compared to experimental data. Despite of the average particles size about 10 nm sample has remanent magnetic moment. The phenomena may be explained on the basis of magnetostatic interaction between particles. The magnetic state of analyzed samples can be conditional on the presence of several phases with very different magnetic properties or the size effect.

Nonaqueous Sol-Gel Synthesis of Magnetic Iron Oxides Nanocrystals

2013 ◽  
Vol 96 (10) ◽  
pp. 3169-3175 ◽  
Author(s):  
Nicola Florini ◽  
Gabriele Barrera ◽  
Paola Tiberto ◽  
Paolo Allia ◽  
Federica Bondioli
Keyword(s):  
Iron Oxides ◽  
Sol Gel ◽  
Sol Gel Synthesis

Titanium and iron oxides produced by sol–gel processing of [FeCl{Ti2(OPri)9}]: structural, spectroscopic and morphological features

2003 ◽  
Vol 38 (15) ◽  
pp. 1915-1928 ◽  
Author(s):  
Pedro H.C Camargo ◽  
Giovana G Nunes ◽  
Geraldo R Friedermann ◽  
David J Evans ◽  
G.Jeffery Leigh ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Sol Gel ◽  
Morphological Features ◽  
Gel Processing
Sign in / Sign up

Export Citation Format

Share Document