Comparison of catalytic activity of bismuth substituted cobalt ferrite nanoparticles synthesized by combustion and co-precipitation method

2017 ◽  
Vol 421 ◽  
pp. 113-119 ◽  
Author(s):  
Venkat Savunthari Kiran ◽  
Shanmugam Sumathi
Keyword(s):  
Catalytic Activity ◽  
Cobalt Ferrite ◽  
Ferrite Nanoparticles ◽  
Precipitation Method ◽  
Cobalt Ferrite Nanoparticles ◽  
Co Precipitation

scholarly journals Synthesis and Characterization of a Core-shell Material Using YBa2Cu3O7-d and Cobalt Ferrite Nanoparticles

2019 ◽  
Vol 69 (12) ◽  
pp. 3345-3348
Author(s):  
Maria Colie ◽  
Dan Eduard Mihaiescu ◽  
Daniela Istrati ◽  
Adrian Vasile Surdu ◽  
Bogdan Vasile ◽  
...  
Keyword(s):  
Cobalt Ferrite ◽  
Nanostructured Material ◽  
Ferrite Nanoparticles ◽  
Precipitation Method ◽  
Core Shell ◽  
Shell Material ◽  
X Ray ◽  
Cobalt Ferrite Nanoparticles ◽  
Transmission Electron ◽  
Co Precipitation

In this paper we describe the synthesis of a core-shell material using yttrium superconducting ceramic material (YBCO) and cobalt ferrite nanoparticles in order to obtain a nanostructured material with magnetic properties. The advantages of such material aim the selective deposition of nanofilms oriented in magnetic fields. To obtain this core-shell material, the solutions of the nitrates were first obtained by dissolving the salts in demineralised water. The suspension with cobalt ferrite nanoparticles was obtained by co-precipitation method. To obtain YBa2Cu3O7-�- coated magnetic nanoparticles by autocombustion reaction the solutions of nitrates and citric acid were used. The ratio of the metal ions: Y:Ba:Cu was 1:2:3, and between the oxidant and the reducing agent was used a citrate / nitrate mass ratio equal with 0.7. The final material was analyzed by X-ray diffraction (XRD), electronic scanning microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), high resolution transmission electron microscopy (HRTEM) and vibrating sample magnetometer (VSM).

scholarly journals Synthesis of cobalt ferrite nanoparticles by constant pH co-precipitation and their high catalytic activity in CO oxidation

2017 ◽  
Vol 41 (15) ◽  
pp. 7356-7363 ◽  
Author(s):  
Jasmine Thomas ◽  
Nygil Thomas ◽  
Frank Girgsdies ◽  
Malte Beherns ◽  
Xing Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Cobalt Ferrite ◽  
Nitrate Solution ◽  
Metal Nitrate ◽  
Ferrite Nanoparticles ◽  
Precipitation Method ◽  
High Catalytic Activity ◽  
Constant Ph ◽  
Co Precipitation

A series of cobalt ferrite samples were synthesized from a metal nitrate solution at constant pH between 9 and 12 by the controlled co-precipitation method without any surfactant.

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