Yolk–shell Fe3O4@ZrO2 prepared by a tunable polymer surfactant assisted sol–gel method for high temperature stable microwave absorption

2014 ◽  
Vol 2 (35) ◽  
pp. 7275-7283 ◽  
Author(s):  
Meng Yu ◽  
Chongyun Liang ◽  
Mengmei Liu ◽  
Xialin Liu ◽  
Kaiping Yuan ◽  
...  
Keyword(s):  
High Temperature ◽  
Shell Thickness ◽  
Sol Gel ◽  
Hydroxypropyl Cellulose ◽  
Shell Structures ◽  
Gel Method ◽  
Sol Gel Method ◽  
Highly Dispersed ◽  
Polymer Surfactant ◽  
Surfactant Assisted

Highly-dispersed Fe3O4@ZrO2 yolk–shell structures with a ZrO2 shell of homogeneous shell thickness was successfully prepared via a polymer surfactant (hydroxypropyl cellulose) assisted sol–gel method.

Highly dispersed MoVTeNbO/SiO2 catalysts prepared by the sol–gel method for selective oxidation of propane to acrolein

2009 ◽  
Vol 10 (12) ◽  
pp. 1591-1594 ◽  
Author(s):  
Xiaodong Yi ◽  
Xiaodan Sun ◽  
Xiaobing Zhang ◽  
Chuanjing Huang ◽  
Weizheng Weng ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Highly Dispersed

Overview on the use of surfactants for the preparation of porous carbon materials by the sol-gel method: applications in energy systems

2020 ◽  
Vol 36 (7) ◽  
pp. 771-787 ◽  
Author(s):  
Víctor Manuel Ortiz-Martínez ◽  
Lucía Gómez-Coma ◽  
Alfredo Ortiz ◽  
Inmaculada Ortiz
Keyword(s):  
Porous Structure ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Sol Gel ◽  
Energy Systems ◽  
Polymerization Reaction ◽  
Gel Method ◽  
Sol Gel Method ◽  
Porous Carbon Materials ◽  
Surfactant Assisted

AbstractPorous carbon materials attract great interest because of the wide range of applications in electrochemical energy systems, especially in the case of structured and porosity-tuned carbons prepared by template-assisted methods. The use of surfactant prevents the collapse of the porous structure during the air-drying stage in the sol-gel process, which is regarded as a critical stage in this method. This work offers an overview on the use of surfactants as templates for the manufacture of tunable porous carbon materials by the sol-gel method mainly using the polymerization reaction of resorcinol (R) and formaldehyde (F). The use of surfactants avoids the application of other economically disadvantaged drying techniques such as supercritical fluids and freeze-drying. The surfactant-assisted sol-gel methods reported in the literature for the fabrication of porous carbons are widely discussed, as well as the potentiality of the synthesized materials as electrodes in electrochemical systems, which greatly depends on the final porous structure. Besides, this work offers information on hybrid methods in which surfactants are used not only for the fabrication of porous carbon materials with mesoporous/microporous structure but also for the development of advanced structures and composites, including nanomaterials with enhanced properties. Finally, future prospects in the synthesis of carbon materials prepared by surfactant-assisted sol-gel method are presented.

The effects of subsonic and supersonic dissociated air flow on the surface of ultra-high-temperature HfB2-30 vol% SiC ceramics obtained using the sol-gel method

2020 ◽  
Vol 40 (4) ◽  
pp. 1093-1102 ◽  
Author(s):  
Elizaveta P. Simonenko ◽  
Nikolay P. Simonenko ◽  
Andrey N. Gordeev ◽  
Anatoly F. Kolesnikov ◽  
Anton S. Lysenkov ◽  
...  
Keyword(s):  
High Temperature ◽  
Air Flow ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Sic Ceramics ◽  
Dissociated Air ◽  
Ultra High Temperature

High temperature X-ray studies of mayenite synthesized using the citrate sol–gel method

2014 ◽  
Vol 40 (1) ◽  
pp. 1117-1123 ◽  
Author(s):  
Sabina N. Ude ◽  
Claudia J. Rawn ◽  
Roberta A. Peascoe ◽  
Melanie J. Kirkham ◽  
Gregory L. Jones ◽  
...  
Keyword(s):  
High Temperature ◽  
Sol Gel ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method

Magnetodynamic Studies of Fine-Crystalline YBa2Cu3Oy High-Temperature Superconductor Samples Synthesized by the Sol–Gel Method

2018 ◽  
Vol 12 (6) ◽  
pp. 1024-1030
Author(s):  
K. S. Pigalskiy ◽  
L. G. Mamsurova ◽  
A. A. Vishnev ◽  
S. Kh. Gadzhimagomedov ◽  
Zh. Kh. Murlieva ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductor ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Preparation of ZnO nanoparticles by a surfactant-assisted complex sol–gel method using zinc nitrate

2009 ◽  
Vol 51 (2) ◽  
pp. 198-203 ◽  
Author(s):  
Y. L. Zhang ◽  
Y. Yang ◽  
J. H. Zhao ◽  
R. Q. Tan ◽  
P. Cui ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Sol Gel ◽  
Zinc Nitrate ◽  
Gel Method ◽  
Sol Gel Method ◽  
Surfactant Assisted
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