Characteristics of nanosize spinel Ni0.9Fe2Co0.1O4 prepared by sol-gel method using pectin as an emulsifying agent

Abstract

Ni0.9Fe2Co0.1O4 nanomaterial have been prepared using a sol-gel method. Preparation of material was carried out by dissolving nitrate salts of iron, cobalt and nickel, in pectin solution and then the sample was stirred throughly using magnetic stirrer while adjusting pH to 11. After freeze-drying process, the sample was subjected to calcinations treatment and subsequently characterized using the techniques of X -ray diffraction (XRD), Scherrer Methods, FTIR and DT-TG analysis. The results of XRD characterization indicated that materials consist of two crystalline phases, such as CoFe2O4 and NiFe2O4. These two crystalline phases are superimposed. DT-TGA result showed that spinel Ni0.9Fe2Co0.1O4 formed above 400oC. Then, PSA determination proved that the grain size of spinel ferrites is a range of 30–95.2 nm as much as 21%. Crystallite size calculation using Scherrer equation, proved that the size is 31.95 nm. Its size increased astemperature calcination augmaunted