PHYSICAL CHARACTERIZATION OF Ni(II) DOPED TiO2 NANOCRYSTAL BY SOL-GEL PROCESS

Prasetyo Hermawan (Student of Doctorate Program, Department of Chemistry, Faculty of Mathematic and Natural Sciences, Universitas Gadjah Mada)
Harno Dwi Pranowo (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada Sekip Utara, Yogyakarta 55281)
Indriana Kartini (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada Sekip Utara, Yogyakarta 55281)

Indonesian Journal of Chemistry
Vol 11, No 2 (2011)

Ni(II) doped titanium dioxide has been prepared by using sol-gel process. Ni(II) ion was incorporated into titanium dioxide by reacting Ni(II) chloride with titanium tetraisopropoxide (TTiP)-acetyl acetone mixture in isopropanol solvent. The effects of transition metal ion doping on the physical properties have been investigated. UV/Vis spectrophotometer, TGA-DTA, X-ray diffraction (XRD) and DR-UV/Vis were used to investigate the spectra absorption of nanosol, nanoparticle thermal transition, structure of crystal and band edge absorption, respectively. The results at addition of 5% Ni/Ti revealed that absorbance of nanosol increased from 0.811 (λmax: 342 nm) to 2.283 (λmax: 350 nm). The crystallization temperature transition from anatase to rutile decreased from 500 °C to 475 °C. The particle size increased from 18.51 nm to 20.35 nm, while the band gap energy (Eg) decreased from 2.73 eV to 2.51 eV.