Sintesis dan Karakterisasi Lapisan Tipis TiO2 Berpori yang didoping dengan Nitrogen melalui Metode Perokso Sol-gel Untuk Aplikasi Material Pembersih Diri (Self Cleaning Material)

ABSTRACT The photocatalytic properties of TiO2 on a surface of a material give an ability of the surface that being cleaned without any manual activity, called self cleaning material. The photocatalytic properties of TiO2 compound in anatase phase can be activated under visible light by nitrogen doping and its ability can be increased by modifying the surface of TiO2 thin film with generated porous structure using polietilen glikol (PEG). The porous N-doped TiO2 thin films were prepared by heating aqueous peroxotitanate thin films by addition of polietilen glikol (PEG) deposited uniformly on superhydrophilic uncoated glass at 500 oC for 1 h. The result of X-ray diffraction (XRD) characterization revealed that the phase of all synthesized porous N-doped TiO2 were anatase. The UV-Vis spectroscopy showed the synthesized porous N-doped TiO2 thin films exhibit the absorption in the visible range (400-500 nm). Photocatalytic activity of porous N-doped TiO2 thin films were evaluated by using fourier transform-infrared spectroscopy (FTIR) to determine the ability of this photocatalyst for stearic acid degradation under visible light irradiation. The result showed that N-TiO2/PEG-2.1 thin film degraded the stearic acid was about 87,86%, which was 1,12 times higher than that of N-doped TiO2 and 9,9 times higher than that of undoped TiO2 thin film. Keyword : anatase, porous, photocatalyst, self-cleaning, superhydrophili