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This research is focused on extraction titanium dioxide nanotubes from Tulungagung mineral sands using the hydrothermal method. Extraction is done by dissolving mineral sand into sulfuric acid solution and vacuums pump to obtain TiO2 precipitate. Furthermore, TiO2 precipitate were calcined at 600° C for 2 hours. TiO2 was dissolved in NaOH and stirred for 2 hours. The resulting solution was put into an autoclave and heated at 130° C for 24 hours to form nanotubes structure. The formed titanium dioxide nanotubes are neutralized using HCl and distilled water. TDN was dried using an oven and calcined at 600 ° C for 2 hours. Furthermore SEM, XRD characterization was carried out and analyze with Match! Software and rietveld. The analysis results showed that a single phase anatase TDN with a nanocrystalline size of 43,02 nm was formed based on rietveld analysis. Also the SEM images shows that the diameter of nanotubes are about 15,66-32,33 nm. Keywords—mineral sands, TiO2, hydrothermal,TDN

Nanocrystaline Titanium Dioxide Nanotube (TDN) by Hydrothermal Method From Tulungagung Mineral Sand