nanometric carbid silicon (sic) supported monometallic and bimetallic catalysts containing fe, co, ni transition metals were prepared by wet impregnation method. multiwall carbon nanotubes (mwcnts) were synthesized over the prepared catalysts from catalytic decomposition of acetylene at 850°c by thermal chemical vapor deposition (tcvd) technique. the synthesized nanomaterials (catalysts and cnt...

In this study, in situ -grown cobalt ferrite (CoFe 2 O 4 , CF) nanoparticles on waste biomass-derived porous activated carbon (AC) were grown via a facile hydrothermal technique to develop CF/AC nanocomposite.

The paper proposes a simple one-stage synthesis of organic-inorganic composite materials based on oxide compounds iron (III) and cobalt (II) with developed surface. process cobalt(II) ferrite (CoFe2O4) structure formation the biochar surface was studied. As an organic component, obtained from agricultural waste, including sunflower husks, rice pea kernels. Composite ferrite/biochar were for fir...

We discuss the atomic structure of cobalt ferrite nanoparticles doped with Mn via an analysis based on combining pair distribution functions high energy X-ray diffraction and high-resolution transmission electron microscopy measurements. Cobalt are promising materials for metal–air battery applications. ferrites, however, generally show poor electronic conductivity at ambient temperatures, whic...

Iron cobalt oxides, such as typical FeCo2O4 and CoFe2O4, are two spinel structured transitional metal oxide materials with excellent electrochemical performance. As the electrodes, they have been widely applied in the current energy storage and conversion processes such as supercapacitors, Lithium-ion batteries and fuel cells. Based on synthesis approaches and controlled conditions, these two m...

The present study concerns oxygen-ion transfer between yttriastabilized zirconia single crystals (YSZ/YSZ) under mechanical contact stress. Two YSZ single crystal plates were piled up between platinum meshes, and contact stress was mechanically applied. The interfacial conductivity as well as the bulk conductivity was successfully measured with this setup. The interfacial conductivity is greatl...

A laser-based magnet measurement system has been developed to measure the magnetostrictive strain of large cylindrical samples. The measurement system incorporates a solenoid capable of generating a maximum magnetic field intensity of 3000 Oe and a laser displacement sensor. For calibration and evaluation purposes, the positive magnetostrictions of two different types of giant magnetostrictive ...

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Pemanfaatan potensi energi angin telah menghasilkan perkembangan pada perancangan generator magnet permanen 18 slot 16 pole. Pada pole hanya mampu efisiensi sebear 70%. Penelitian ini bertujuan untuk menaikkan dari tersebut. paper akan melakukan percobaan dengan memasukkan inputan material melihat pengaruh permanent Ceramic Ferrite, PM12: Br 1.2 mur 1.0, Neodymium Iron Boron, dan Samarium cobal...