Annealing Temperature Effects in Co-Precipitated CoFe_2O_4 Nanoparticles Using Bengawan Solo River Fine Sediment

摘要

In this study, the synthesis of CoFe_2O_4 by using the fine sediment of the Bengawan Solo River, Trucuk District, Bodjonegoro Regency as raw materials. Synthesis with the coprecipitation method has been successfully carried out. The fine sediment is used as a source of Fe cation in the synthesis of CoFe_2O_4 from the nature. The XRD confirmation results showed that CoFe_2O_4 is formed at an annealing temperature of 800° C with crystallite sizes ranging from 34.88 to 38.05 nm. Thus, the VSM characterization showed that the magnetic properties of the CoFe_2O_4 nanoparticles depend on the heat treatment of the fine sediments as ore materials. Finally, the obtained CoFe_2O_4 samples can be used as photocatalysts with a maximum reduction rate ratio of 83%.