SINTESIS DAN KARAKTERISASI SERAT NANOTITANIA DENGAN METODE ELECTROSPINNING

Abstract

Titanium Dioxide (TiO₂) nanofibers have been prepared using the electrospinning method. This study aims to determine the morphology and crystal structure of the TiO₂ nanofibers and to determine the effect of viscosity on the morphology and crystal structure formed. This study used titanium tetraisopropoxide as a precursor, ethanol as a solvent, acetic acid as a solution stabilizer and controlled the hydrolysis reaction of the precursor, and PVP as a fiber-making material. The amount of variations of acetic acid is 2; 2.5; 3; 3.5; and 4 ml respectively. The results of the viscosity test showed that the greater the acetic acid used, the smaller the viscosity. The electrospinning process was carried out at a high voltage of 13 kV with a flow rate of 1.5 ml/hour. The fiber obtained was then calcined at 450 ^oC for 3 hours. The calcined sample was then analyzed using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). SEM characterization results on samples B, C, and D showed that the sample diameters were 313 28 nm, 275 57 nm, and 242 59 nm, respectively. The results of XRD characterization on sample D showed that the resulting sample had a tetragonal crystal structure with a mixed phase between anatase and rutile. The results of TEM characterization in sample D showed the fiber diameter with a size of 68.05 nm.