Abstract:
Investigation of natural sand originating from the Rokan river in Riau Province by
turning it into magnetic iron oxide nanoparticles to determine changes in its
particle structure has been carried out. Before the natural sand synthesis process
is carried out, it is processed using an Iron Sand Separator (ISS) and a Neodymium
Iron Boron (NdFeB) magnet to separate magnetic and non-magnetic particles, so
the result is called an ISS product. The product is then synthesized using the
coprecipitation method using HCl, NH4OH, and PEG-6000 as polymers with
variations in temperature at the sonication stage, namely 50℃; 65℃; and 80℃ are
characterized using X-Ray Diffraction (XRD). The XRD test results produced a
magnetite (Fe3O4) phase with a cubic crystal structure. Crystal size is calculated
using the Scherrer Equation where the average crystal size is 39.2 nm; 36.2nm;
and 29.9 nm.
