Synthesis of TiO2 nanorods from titania and titanyl sulfate produced from ilmenite dissolution by hydrothermal method

8th International Conference on Physics and its Applications

Wahyuningsih, S.^1 ; Ramelan, A.H.^1 ; Munifa, R.M.I.^1 ; Saputri, L.N.M.Z.^1 ; Chasanah, U.^1

Chemistry Department, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Central Java, Ir. Sutami 36A, Kentingan Jebres Surakarta

57126, Indonesia^1

关键词: Acidic leaching;    Basic conditions;    Crystallinities;    Further treatments;    Hydrothermal methods;    Solid separation;    Titanyl sulfate;    X ray fluorescence;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/776/1/012044/pdf
DOI  :  10.1088/1742-6596/776/1/012044

来源: IOP

【 摘 要 】

TiO2powder has been synthesized through hydrolysis-condensation of titanyl sulfate solution to a starting material of TiO2nanorods formation. This processing was conducted by the solid separation of TiO2from ilmenite by roasting ilmenite, acidic leaching (hydrolysis), and co-precipitation (condensation). Roasting of ilmenite was carried out by the addition of Na2S at a temperature of 800°C. While the acidic leaching process was conducted by sulfuric acid at a various concentrations of 3, 3.5, 4.5, 6, and 9 M. The result shown that the solubility optimum occurs in H2SO46 M condition. Separation of Fe impurities of TiO2gel from titanyl sulfate (TiOSO4) solution was done through complexation using KCNS addition. The characteristic of TiO2obtained using X-Ray Fluorescence (XRF) and X-Ray Diffraction (XRD) showed good crystallinity and purity. Further treatment of the TiO2is the formation of one-dimensional nano-size (1-D nanorods) through a hydrothermal method under basic condition NaOH 12M solution. TiO2nanorods were confirmed by Transmission Electron Microscope (TEM) which indicated that the diameter of TiO2nanorods was about 7.02 nm in size.