A.K. Prodjosantoso*, H. Wibowo and C. Kusumawardani

Department of Chemistry, Yogyakarta State University, Yogyakarta 55281, Indonesia

*Corresponding author: E-mail: prodjosantoso@uny.ac.id

In this work, the synthesis and characterization of chloride free nitrogen doped TiO₂ nanoparticles have been undertaken. The chloride-free nitrogen doped TiO₂ nanoparticles were hydrothermally prepared by mixing acidic ethylene diamine solution with titanium tetraisopropoxide followed by heating at 120 and 150 ºC for 12 h and 180 ºC for 6 h. The resulted solid was isolated, dried, grinded and calcined at 450 ºC for 3 h. The samples were characterized using powder X-ray diffraction, UV-visible reflectance and SEM-EDAX methods. The results indicated that the samples consist of a major component of rutile and minor anatase types. The hydrothermal temperature does not affect to the composition of the product. The N-doped in TiO₂ decreases the lattice parameters. The crystallite size of rutile is somewhat bigger than anatase. As expected, all samples are free of chloride.

N-TiO₂ Nanoparticles, Titanium tetraisopropoxide, chloride free catalysts, band gap energy.