Synthesis and Characterization of TiO2 Thin Film Based on Iron Sand of Lampung Province - Indonesia
2021
This study aims to make a thin layer of TiO2 based on ilmenite stored in iron sand of
Lampung Province, Indonesia. The TiO2 powder, which was used to make the thin layer, was
obtained from the extraction of iron sand using the leaching method with a purity of 60,7%. The
preparation of TiO2 thin layers was carried out by the Chemical Bath Deposition (CBD) method
with immersion time variations of 2, 3, 4, and 5 hours for samples A, B, C, and D respectively.
Afterward, the samples were calcined at 500˚C for 4 hours. The characterizations involved XRay Diffraction (XRD), Scanning Electron Microscope (SEM), X-Ray Fluorescence (XRF), and
four-point probe to measure the resistivity of the film. The XRD results in samples A (immersion
time 2 hours) and D (immersion time 5 hours) show that the amorphous phase still dominates
even though the diffraction peaks indicate that the presence of crystals has started to grow at
several angles of scattering. The identification results of the phase presence show that the thin
layer of TiO2 at sample D is the brookite phase. The results of characterization using SEM show
that the surface of the TiO2 thin layer forms a porous structure. The average thickness of the thin
film at sample B based on SEM analysis is 1.9 μm. The electrical resistivity increased with an
increasing immersion time
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