MANUFACTURING OF NANO HYBRID SOL- GEL COATING AND STUDYING THE RAMAN STRUCTURAL PROPERTIES, MORPHOLOGICAL CHARACTERISTICS AND THEIR APPLICATION AS ANTIOXIDANT FOR CONTAMINATE ROHDAMINE B (RhB) PIGMENT

Abstract

Titania have been extremely investigated for employing in the paint fields due to its importance as pigments. Therefore, TiO2 particles are perfect candidates in the paint industry. The nanoparticles were mixed with coating solution (i.e. hybrid sol-gel and organosilicate nanoparticles (OSNP) at concentration (1%wt) for both anatase and rutile. Films were prepared by spin coating method which has been studied by the (Electron Dispersive X-ray Spectroscopy) (EDS)/ (Scanning Electron Microscope) to define the components of concentrations. Results of Raman Spectroscopy to distinguish between crystalline phases, Raman shift resulted for anatase about (142.1, 411.1, 547.4 and 669.6) cm-1 , rutile (190,272,452 and 616) cm-1 . Additionally, the films were studied the thickness and refractive index (n) by Spectroscopic Ellipsometer(SE) for nano-anatase (1%wt) film thickness (128)nm and n equal (2.25), for nano-rutile films thickness (313.5)nm and n equal (2.5). Profilometer investigated the coating topography to demonstrate the Root Mean Square (RMS) to identify the roughness which increased by increasing particle size. Fourier Transform Infrared (FTIR) analysis showed the strong bonds of the nanoparticles in frequency region between (400-1000) cm-1 corresponds to Ti-O-Ti, also the bands at cm-1 were for a symmetric Si-O-Si stretching and vibration, respectively. Self-cleaning tests on the films were performed using Rhodamine B (RhB) as an antioxidant indicator.