TY - JFULL AU - Janjira Triped and Wipada Sanongraj and Wipawee Khamwichit PY - 2014/6/ TI - Photocatalytic Oxidation of Gaseous Formaldehyde Using the TiO2 Coated SF Filter T2 - International Journal of Environmental and Ecological Engineering SP - 453 EP - 457 VL - 8 SN - 1307-6892 UR - https://publications.waset.org/pdf/9998535 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 89, 2014 N2 - The research work covered in this study includes the morphological structure and optical properties of TiO2-coated silk fibroin (SF) filters at 2.5% wt. TiO2/vol. PVA solution. SEM micrographs revealed the fibrous morphology of the TiO2-coated SF filters. An average diameter of the SF fiber was estimated to be approximately 10µm. Also, it was confirmed that TiO2 can be adhered more on SF filter surface at higher TiO2 dosages. The activity of semiconductor materials was studied by UV-VIS spectrophotometer method. The spectral data recorded shows the strong cut off at 390 nm. The calculated band-gap energy was about 3.19 eV. The photocatalytic activity of the filter was tested for gaseous formaldehyde removal in a modeling room with the total volume of 2.66 m3. The highest removal efficiency (54.72 ± 1.75%) was obtained at the initial formaldehyde concentration of about 5.00 ± 0.50ppm. ER -