One-pot synthesis of cobalt nanoparticle-embedded lamellar sheets by using inorganic complex via thermal decomposition route

Abstract

Metallic cobalt nanoparticle-embedded lamellar sheets were prepared from, [bis(2-hydroxy-1-naphthaldehydato)cobalt(II)] complex as an inorganic precursor via thermal decomposition method. The steric hindrance of the precursor raises the need of using co-surfactant, therefore oleylamine (C 18 H 37 N) was applied as the only surfactant of the reaction. The products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy. The hysteresis loops of the obtained sample reveal the ferromagnetic behaviors, the coercivity (H c ) was enhanced and the saturation magnetization (M s ) was decreased relative to their respective bulk material. Solid state reaction was employed as a method to reveal the important role of surfactant in formation of new shapes with high shape anisotropies. The unique mixed morphology in which cobalt nanoparticles are embedded in cobalt nanosheets could be potential for various electronic applications.

Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

“…Isotopic labeling studies are crucial for establishing the origin of reaction products, especially when using CO 2 as a substrate to produce carbon-containing compounds . Molecular integrity should be investigated, as a number of first row transition metal complexes can decompose into active nanoparticles under catalytic conditions, and metallic impurities in supporting electrolyte solution may act in a similar manner. ,− Ruling out such scenarios is vital to correctly assigning the catalytically active species, and entire articles dedicated to the topic are available. , Procedures should furthermore be reported in sufficient detail to assess the validity of the results. For example, one widely used test involves adding Hg 0 to poison metallic particles by amalgamation or surface adsorption.…”