شماره ركورد كنفرانس :
5498
عنوان مقاله :
Preparation of super-hydrophilic SiO2-TiO2 thin film for photocatalytic application
پديدآورندگان :
Mohammad Darvish Samira masoudi@alzahra.ac.ir Department of Condensed Matter Physics, Faculty of Physics, Alzahra University, Tehran , Masoudi Amir Ali mortezaali@alzahra.ac.ir Department of Condensed Matter Physics, Faculty of Physics, Alzahra University, Tehran , Mortezaali Abdollah samdarvish3@gmail.com Department of Condensed Matter Physics, Faculty of Physics, Alzahra University, Tehran , Hosseini Zahra Sadat Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute
كليدواژه :
SiO2 , TiO2 , thin film , photocatalyst , super , hydrophilic
عنوان كنفرانس :
اولين كنفرانس بين المللي و چهارمين كنفرانس ملي تجهيزات و فناوري هاي آزمايشگاهي
چكيده فارسي :
Silicon dioxide-titanium dioxide (SiO2-TiO2) thin films with super-hydrophilic properties and photocatalytic activity were prepared on the glass substrates by a simple dip-coating method. Morphological, structural and optical properties of the SiO2-TiO2 thin films were characterized by using Field Emission Scanning Electron Microscopy (FESEM), X-Ray Diffraction (XRD) patterns, and UV-Vis spectroscopy. The XRD patterns indicate decrease of the crystallite size from 51.0 nm to 22.7 nm. Optical measurements were used to calculate band gap of TiO2 which reduced from 3.13 eV to 2.63 eV with addition of SiO2. Water Contact Angle (WCA) measurements showed that SiO2-TiO2 thin film has super-hydrophilic property. Upon investigating the photocatalytic activity, an improved performance compared to TiO2 in terms of higher efficiency (~100%) and rate (~0.023 min-1) in degradation of methylene blue (MB) under visible light was achieved.
