Determination Of Cobalt Concentration In Nanostructured Powders Obtained By Means Of Hydrothermal Treatment Of The Aqueous Solutions Of Sn (Ii) And Co (Ii) Chlorides

The cobalt content of nanostructured powders obtained by means of the hydrothermal treatment of the aqueous solutions of Sn (II) and Co (II) chlorides is studied using two spectral methods - energy-dispersive (EDS) and atomic absorption (AAS). Liquid samples for atomic absorption analysis were prepared along two routes: by boiling the products of hydrothermal synthesis in concentrated acids and by fusing the products of hydrothermal synthesis with a mixture of sodium peroxide and borax, followed by diluting the liquid alloy. It is shown that low-temperature alloying of samples is most preferable to determine cobalt concentration in ferromagnetic Sn1-xCoxO2-delta nanostructures. Results obtained in the present work allow us to better understand the process of the formation of Co-doped SnO2 nanostructures and use these structures to develop new functional materials.