Abstract
The photocatalytic properties of TiO2 compound in anatase phase can be activated under visible light by nitrogen modification and its ability can be increased by generated porous structure using polietilen glikol (PEG) on TiO2 thin film surface. The porous N/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) confirmed the resence of only anatase phase for all samples. The UV-Vis spectroscopy showed the synthesized porous N/TiO2 thin films exhibit the absorption in the visible range (400-500 nm). Photocatalytic activity of porous N/ 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.
Highlights
The photocatalytic properties of TiO2 compound in anatase phase can be activated under visible light by nitrogen modification
its ability can be increased by generated porous structure using polietilen glikol
TiO2 thin films were prepared by heating aqueous peroxotitanate thin films by addition
Summary
Bahan kimia yang digunakan pada penelitian ini adalah titanium(IV) klorida (TiCl4) 99,9% (Merck), Hidrogen peroksida (H2O2) p.a 30% (Merck), amonium hidroksida p.a (NH4OH) 25% (Merck), PEG 4000 (Merck), Aseton (Merck), Metanol (Merck), asam stearat (Merck), perak nitrat (Merck). Peralatan yang digunakan diantaranya adalah peralatan gelas, kaca silika normal (25,4 mmx 76,2 mm), dip coater, furnace, lampu halogen 500 W dan lain-lain. Sedangkan instrumentasi yang digunakan adalah X-ray diffraction (XRD; Simadzu XRD 7000), Scanning Electron Microscopy (SEM; Hitachi S-3500), Diffuse reflectance spectrophotometer UV-Vis (DRS UV-Vis), Fourier Transmission Infra Red (FTIR; PerkinElmer)
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