Preparation Fe3O4/MWCNT Nanocomposite Combined with Titanium Dioxide Using Sonochemical and Precipitation Methods
Ahmad Taufiq*, Siti Nikmatul Qoidah, ST. Ulfawanti Intan Subadra, Nandang Mufti, Arif Hidayat, Sunaryono
Department of Physics, Universitas Negeri Malang, Jl. Semarang 5, Malang 65145, Indonesia.
Abstract
Regarding the physical and chemical performances, Fe3O4 and multi wall carbon nanotubes (MWCNT) combined with with other metal oxide such as titanium dioxide opens new opportunity to be widely used for energy application such as for supercacitor. In this paper, we report the preparation of Fe3O4/MWCNT nanocomposite combined with titanium dioxide using sonochemical-precipitation method. The nanocomposite was characterized using X-ray diffractometer, Fourier transform infra-red spectroscopyr, and scanning electron microscopy, and Uv-Vis spectrometer. The results of diffraction data analysis showed the presence of crystalline phase in nanocomposite derived from Fe3O4 and titanium dioxide with cubic inverse spinel and anatase structures, respectively. The existence of MWCNT was then confirmed by functional groups data which indicated the vibration of C=C functional group at the wavelength of 1400-1600 cm-1, while the vibration of Fe-O was detected at the wavelength of 409 cm-1 and 667 cm-1 overlapped with Ti-O functional group. MWCNT considered to be crosslinked the surface of Fe3O4 or titanium dioxide nanoparticles. Furthermore, the bandgap energy of the nanocomposite were 2.2 eV for Fe3O4/MWCNT, and 3.2 eV for Fe3O4/MWCNT.
Keywords: Fe3O4, MWCNT, titanium dioxide, iron sand, sonochemical, precipitation.
Topic: Smart materials