Pengaruh Thiourea Sebagai Sumber Doping Sulfur terhadap Sintesis Nanotitania

Abstract

Sulfurdoped TiO₂ were prepared by sol gel method using thiourea as sulfur source. The amount of thiourea solutions are 0; 0.5; 1.0; 1.5 and 2 ml, respectively. Sulfur-doped TiO₂ was calcinated at 450 C. Sulfur-doped TiO₂ and pure TiO₂ were characterized by X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM). Photocatalyst tests were carried out undersunlight and UV lamp. Based on XRD characterization, the samples are anatase phase. And particle size was calculated using Scherrer equation and results of 8.94 and 12.98 nm, respectiely for TBT-1.5 and TBT-0.5. TEM characterization showed that particle size of sulfur-doped TiO₂ and pure TiO₂ are 8.6 and 12.5 nm. Compared to undoped TiO₂, sulfur-doped TiO₂ has a better photocatalyst activity for degradation of remazol golden yellow under visible light.