Open AccessThe Effect of Temperature to CTAB-assisted Solvothermal Synthesis of TiO2
Author(s) -
Nelly Safitri Anwari,
Nur Aini,
Arie Hardian,
Veinardi Suendo,
Anton Prasetyo
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/546/4/042003
Subject(s) - anatase , crystallinity , materials science , bromide , raman spectroscopy , scanning electron microscope , photocatalysis , specific surface area , pulmonary surfactant , chemical engineering , analytical chemistry (journal) , chemistry , inorganic chemistry , composite material , optics , organic chemistry , catalysis , physics , engineering
Surface area has significant impact on the photocatalytic activity of semiconductor material. It was found that templates as structure directing agent played a role in regulating the surface area of materials. The most widely used as template is cetyltrimethylammonium bromide (CTAB) surfactant. In this research, TiO 2 was prepared by solvothermal method used temperature variations of 150, 175, 200, and 225 ºC. The X-ray powder diffraction (XRD) data indicated that anatase phase of TiO 2 was successfully obtained with I 4 1 / amd space group and as the synthesis temperature was increased, the crystallinity increases. The spectra infrared spectroscopy (IR) showed the broad peak situated at wavenumber 400-800 cm −1 which was assigned to the stretching Ti-O vibration. Raman spectra showed peaks at wavenumber 145, 197, 397, 516, and 639 cm −1 which were attributed to vibration modes of anatase. The scanning electron microscopy (SEM) image demonstrated the morphology particle has homogeneous distribution and irregular shape. Furthermore, Brunauer-Emmett-Teller (BET) specific surface area showed the CTAB-assisted TiO 2 which was synthesized at 175 ºC has the highest surface area of 227.043 m 2 /g in this research among the others.